| r0.1 | label_boi_a2/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.2 | label_boi_a2/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.3 | label_boi_a2/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.4 | label_boi_a2/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.5 | label_boi_a2/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.6 | label_boi_a2/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r0.7 | label_boi_a2/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.1 | LTV/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.2 | LTV/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.3 | LTV/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.4 | LTV/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.5 | LTV/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.6 | LTV/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| r1.7 | LTV/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 1.1 | Up to 50%/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.2 | Up to 50%/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.3 | Up to 50%/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.4 | Up to 50%/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.5 | Up to 50%/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.6 | Up to 50%/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 1.7 | Up to 50%/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | boi_PI:x46 | boi_SE:x16 | boi_ST:x22 |
| 2.1 | >50% - 70%/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.2 | >50% - 70%/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.3 | >50% - 70%/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.4 | >50% - 70%/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.5 | >50% - 70%/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.6 | >50% - 70%/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 2.7 | >50% - 70%/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | boi_PI:x47 | boi_SE:x16 | boi_ST:x22 |
| 3.1 | >70% - 75%/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.2 | >70% - 75%/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.3 | >70% - 75%/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.4 | >70% - 75%/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.5 | >70% - 75%/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.6 | >70% - 75%/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 3.7 | >70% - 75%/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | boi_PI:x48 | boi_SE:x16 | boi_ST:x22 |
| 4.1 | >75%/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.2 | >75%/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.3 | >75%/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.4 | >75%/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.5 | >75%/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.6 | >75%/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 4.7 | >75%/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | boi_PI:x49 | boi_SE:x16 | boi_ST:x22 |
| 5.1 | Total/Sole dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x43 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.2 | Total/Alternative dwelling2 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x44 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.3 | Total/Investment dwelling3 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x45 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.4 | Total/Other residential purpose4 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x46 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.5 | Total/Collateralized by dwelling | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x47 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.6 | Total/Other5 | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x48 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |
| 5.7 | Total/Total | boi_met:md99 | xbrli:monetaryItemType | instant | boi_BC:x1 | boi_CL:x35 | boi_CS:x1 | boi_MC:x8 | N/A | boi_SE:x16 | boi_ST:x22 |