 | boi_BC:x0 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x1 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x10 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x11 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x12 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x13 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x14 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x15 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x16 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x17 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x18 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x19 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x2 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x20 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x21 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x22 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x23 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x24 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x25 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x26 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x27 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x28 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x29 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x3 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x30 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x31 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x32 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x33 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x34 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x4 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x5 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x6 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x7 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x8 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x9 | domain-member | http://www.xbrl.org/2003/role/link |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/1 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/2 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/3 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/4 |
 | boi_BC:x8 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/5 |
 | boi_BC:x8 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/6 |
 | boi_BC:x6 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/7 |
 | boi_BC:x6 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/8 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/9 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/10 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/11 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-1/12 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/1 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/2 |
 | boi_BC:x6 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/3 |
 | boi_BC:x6 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/4 |
 | boi_BC:x8 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/5 |
 | boi_BC:x8 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/6 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/7 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/8 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/9 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-2/10 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/1 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/2 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/3 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/4 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/5 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-3/6 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/1 |
 | boi_BC:x28 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/3 |
 | boi_BC:x28 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/5 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/7 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/9 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/11 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/13 |
 | boi_BC:x28 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/15 |
 | boi_BC:x28 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/17 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/19 |
 | boi_BC:x29 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/21 |
 | boi_BC:x1 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-4/23 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-5/1 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-5/3 |
 | boi_BC:x30 | domain-member | http://www.boi.org.il/xbrl/role/fws/d831/d831/2017-12-31/tab/831-5/5 |