| r0.1 | label_boi_a2/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.2 | label_boi_a2/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.3 | label_boi_a2/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.4 | label_boi_a2/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.5 | label_boi_a2/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.6 | label_boi_a2/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.7 | label_boi_a2/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.8 | label_boi_a2/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.9 | label_boi_a2/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.10 | label_boi_a2/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.11 | label_boi_a2/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.12 | label_boi_a2/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.13 | label_boi_a2/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.14 | label_boi_a2/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.1 | LTV/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.2 | LTV/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.3 | LTV/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.4 | LTV/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.5 | LTV/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.6 | LTV/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.7 | LTV/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.8 | LTV/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.9 | LTV/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.10 | LTV/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.11 | LTV/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.12 | LTV/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.13 | LTV/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.14 | LTV/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.1 | Up to 30%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.2 | Up to 30%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.3 | Up to 30%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.4 | Up to 30%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.5 | Up to 30%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.6 | Up to 30%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.7 | Up to 30%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.8 | Up to 30%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.9 | Up to 30%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.10 | Up to 30%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.11 | Up to 30%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.12 | Up to 30%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.13 | Up to 30%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.14 | Up to 30%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x13 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.1 | >30% - 45%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.2 | >30% - 45%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.3 | >30% - 45%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.4 | >30% - 45%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.5 | >30% - 45%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.6 | >30% - 45%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.7 | >30% - 45%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.8 | >30% - 45%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.9 | >30% - 45%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.10 | >30% - 45%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.11 | >30% - 45%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.12 | >30% - 45%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.13 | >30% - 45%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 2.14 | >30% - 45%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x14 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.1 | >45% - 60%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.2 | >45% - 60%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.3 | >45% - 60%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.4 | >45% - 60%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.5 | >45% - 60%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.6 | >45% - 60%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.7 | >45% - 60%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.8 | >45% - 60%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.9 | >45% - 60%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.10 | >45% - 60%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.11 | >45% - 60%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.12 | >45% - 60%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.13 | >45% - 60%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 3.14 | >45% - 60%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x15 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.1 | >60% - 75%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.2 | >60% - 75%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.3 | >60% - 75%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.4 | >60% - 75%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.5 | >60% - 75%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.6 | >60% - 75%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.7 | >60% - 75%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.8 | >60% - 75%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.9 | >60% - 75%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.10 | >60% - 75%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.11 | >60% - 75%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.12 | >60% - 75%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.13 | >60% - 75%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 4.14 | >60% - 75%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x16 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.1 | >75% - 90%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.2 | >75% - 90%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.3 | >75% - 90%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.4 | >75% - 90%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.5 | >75% - 90%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.6 | >75% - 90%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.7 | >75% - 90%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.8 | >75% - 90%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.9 | >75% - 90%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.10 | >75% - 90%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.11 | >75% - 90%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.12 | >75% - 90%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.13 | >75% - 90%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.14 | >75% - 90%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x17 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.1 | >90%/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.2 | >90%/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.3 | >90%/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.4 | >90%/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.5 | >90%/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.6 | >90%/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.7 | >90%/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.8 | >90%/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.9 | >90%/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.10 | >90%/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.11 | >90%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.12 | >90%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.13 | >90%/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 6.14 | >90%/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x60 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | boi_PI:x18 | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.1 | Calculated without security/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.2 | Calculated without security/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.3 | Calculated without security/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.4 | Calculated without security/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.5 | Calculated without security/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.6 | Calculated without security/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.7 | Calculated without security/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.8 | Calculated without security/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.9 | Calculated without security/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.10 | Calculated without security/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.11 | Calculated without security/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.12 | Calculated without security/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.13 | Calculated without security/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 7.14 | Calculated without security/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | boi_CL:x61 | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.1 | Total/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.2 | Total/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.3 | Total/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.4 | Total/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.5 | Total/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.6 | Total/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.7 | Total/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.8 | Total/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.9 | Total/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.10 | Total/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.11 | Total/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.12 | Total/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.13 | Total/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 8.14 | Total/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | N/A | boi_SE:x16 | boi_ST:x22 |
| 9.1 | Thereof: Apartment credit at reduced price/0%-10% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x25 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.2 | Thereof: Apartment credit at reduced price/10%-20% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x26 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.3 | Thereof: Apartment credit at reduced price/20%-30% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x20 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.4 | Thereof: Apartment credit at reduced price/30%-40% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x21 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.5 | Thereof: Apartment credit at reduced price/40%-50% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x27 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.6 | Thereof: Apartment credit at reduced price/50%-60% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x28 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.7 | Thereof: Apartment credit at reduced price/60%-80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x29 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.8 | Thereof: Apartment credit at reduced price/above 80% | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x30 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.9 | Thereof: Apartment credit at reduced price/Bullet and balloon loans | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x24 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.10 | Thereof: Apartment credit at reduced price/Without calculating Rate of payback in income | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | boi_PI:x58 | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.11 | Thereof: Apartment credit at reduced price/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.12 | Thereof: Apartment credit at reduced price/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x36 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.13 | Thereof: Apartment credit at reduced price/Total performance | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |
| 9.14 | Thereof: Apartment credit at reduced price/Avg. payback rate | boi_met:pi104 | num:percentItemType | instant | boi_BC:x1 | N/A | boi_CL:x37 | boi_CS:x1 | boi_MC:x8 | N/A | N/A | boi_PU:x31 | boi_SE:x16 | boi_ST:x22 |