Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001193125-12-285399-index-headers.html | 2012-06-27 15:48:49 | |
| 0001193125-12-285399-index.html | 2012-06-27 15:48:49 | |
| 0001193125-12-285399.txt | 2012-06-27 15:48:49 | |
 0001193125-12-285399-xbrl.zip | 251917 | 2012-06-27 15:48:49 |
| bks-20120428.xml | 1559114 | 2012-06-27 15:48:49 |
| bks-20120428.xsd | 93718 | 2012-06-27 15:48:49 |
| bks-20120428_cal.xml | 99223 | 2012-06-27 15:48:49 |
| bks-20120428_def.xml | 533719 | 2012-06-27 15:48:49 |
| bks-20120428_lab.xml | 739160 | 2012-06-27 15:48:49 |
| bks-20120428_pre.xml | 632281 | 2012-06-27 15:48:49 |
| d361699d10k.htm | 384727 | 2012-06-27 15:48:49 |
| d361699dex131.htm | 1295955 | 2012-06-27 15:48:49 |
| d361699dex211.htm | 4626 | 2012-06-27 15:48:49 |
| d361699dex231.htm | 2350 | 2012-06-27 15:48:49 |
| d361699dex232.htm | 2449 | 2012-06-27 15:48:49 |
| d361699dex311.htm | 10487 | 2012-06-27 15:48:49 |
| d361699dex312.htm | 10620 | 2012-06-27 15:48:49 |
| d361699dex321.htm | 4433 | 2012-06-27 15:48:49 |
| d361699dex322.htm | 4421 | 2012-06-27 15:48:49 |
| FilingSummary.xml | 45542 | 2012-06-27 15:48:49 |
| Financial_Report.xls | 1367760 | 2012-06-27 15:48:49 |
| R1.htm | 39439 | 2012-06-27 15:48:49 |
| R10.htm | 45400 | 2012-06-27 15:48:49 |
| R11.htm | 19196 | 2012-06-27 15:48:49 |
| R12.htm | 66273 | 2012-06-27 15:48:49 |
| R13.htm | 12125 | 2012-06-27 15:48:49 |
| R14.htm | 10412 | 2012-06-27 15:48:49 |
| R15.htm | 19886 | 2012-06-27 15:48:49 |
| R16.htm | 30710 | 2012-06-27 15:48:49 |
| R17.htm | 12747 | 2012-06-27 15:48:49 |
| R18.htm | 70072 | 2012-06-27 15:48:49 |
| R19.htm | 75992 | 2012-06-27 15:48:49 |
| R2.htm | 96452 | 2012-06-27 15:48:49 |
| R20.htm | 11407 | 2012-06-27 15:48:49 |
| R21.htm | 7435 | 2012-06-27 15:48:49 |
| R22.htm | 4257 | 2012-06-27 15:48:49 |
| R23.htm | 24703 | 2012-06-27 15:48:49 |
| R24.htm | 16501 | 2012-06-27 15:48:49 |
| R25.htm | 20742 | 2012-06-27 15:48:49 |
| R26.htm | 71407 | 2012-06-27 15:48:49 |
| R27.htm | 21659 | 2012-06-27 15:48:49 |
| R28.htm | 35150 | 2012-06-27 15:48:49 |
| R29.htm | 4913 | 2012-06-27 15:48:49 |
| R3.htm | 31680 | 2012-06-27 15:48:49 |
| R30.htm | 44511 | 2012-06-27 15:48:49 |
| R31.htm | 125649 | 2012-06-27 15:48:49 |
| R32.htm | 12850 | 2012-06-27 15:48:49 |
| R33.htm | 61234 | 2012-06-27 15:48:49 |
| R34.htm | 11772 | 2012-06-27 15:48:49 |
| R35.htm | 9010 | 2012-06-27 15:48:49 |
| R36.htm | 10996 | 2012-06-27 15:48:49 |
| R37.htm | 26803 | 2012-06-27 15:48:49 |
| R38.htm | 75250 | 2012-06-27 15:48:49 |
| R39.htm | 77507 | 2012-06-27 15:48:49 |
| R4.htm | 5490 | 2012-06-27 15:48:49 |
| R40.htm | 12130 | 2012-06-27 15:48:49 |
| R41.htm | 18563 | 2012-06-27 15:48:49 |
| R42.htm | 67382 | 2012-06-27 15:48:49 |
| R43.htm | 41850 | 2012-06-27 15:48:49 |
| R44.htm | 87400 | 2012-06-27 15:48:49 |
| R45.htm | 31345 | 2012-06-27 15:48:49 |
| R46.htm | 15961 | 2012-06-27 15:48:49 |
| R47.htm | 68931 | 2012-06-27 15:48:49 |
| R48.htm | 20935 | 2012-06-27 15:48:49 |
| R49.htm | 76885 | 2012-06-27 15:48:49 |
| R5.htm | 139432 | 2012-06-27 15:48:49 |
| R50.htm | 37041 | 2012-06-27 15:48:49 |
| R51.htm | 28927 | 2012-06-27 15:48:49 |
| R52.htm | 22859 | 2012-06-27 15:48:49 |
| R53.htm | 15934 | 2012-06-27 15:48:49 |
| R54.htm | 13007 | 2012-06-27 15:48:49 |
| R55.htm | 8644 | 2012-06-27 15:48:49 |
| R56.htm | 71581 | 2012-06-27 15:48:49 |
| R57.htm | 14654 | 2012-06-27 15:48:49 |
| R58.htm | 41110 | 2012-06-27 15:48:49 |
| R59.htm | 26360 | 2012-06-27 15:48:49 |
| R6.htm | 25187 | 2012-06-27 15:48:49 |
| R60.htm | 79674 | 2012-06-27 15:48:49 |
| R61.htm | 37564 | 2012-06-27 15:48:49 |
| R62.htm | 20253 | 2012-06-27 15:48:49 |
| R63.htm | 39987 | 2012-06-27 15:48:49 |
| R64.htm | 6261 | 2012-06-27 15:48:49 |
| R65.htm | 18161 | 2012-06-27 15:48:49 |
| R66.htm | 26972 | 2012-06-27 15:48:49 |
| R67.htm | 9864 | 2012-06-27 15:48:49 |
| R68.htm | 11656 | 2012-06-27 15:48:49 |
| R69.htm | 22477 | 2012-06-27 15:48:49 |
| R7.htm | 64893 | 2012-06-27 15:48:49 |
| R70.htm | 32759 | 2012-06-27 15:48:49 |
| R71.htm | 14700 | 2012-06-27 15:48:49 |
| R72.htm | 64721 | 2012-06-27 15:48:49 |
| R73.htm | 40746 | 2012-06-27 15:48:49 |
| R74.htm | 43624 | 2012-06-27 15:48:49 |
| R75.htm | 20888 | 2012-06-27 15:48:49 |
| R76.htm | 16692 | 2012-06-27 15:48:49 |
| R77.htm | 32218 | 2012-06-27 15:48:49 |
| R78.htm | 21590 | 2012-06-27 15:48:49 |
| R79.htm | 9142 | 2012-06-27 15:48:49 |
| R8.htm | 8680 | 2012-06-27 15:48:49 |
| R80.htm | 65717 | 2012-06-27 15:48:49 |
| R81.htm | 11252 | 2012-06-27 15:48:49 |
| R82.htm | 22657 | 2012-06-27 15:48:49 |
| R83.htm | 243686 | 2012-06-27 15:48:49 |
| R84.htm | 10653 | 2012-06-27 15:48:49 |
| R85.htm | 37977 | 2012-06-27 15:48:49 |
| R9.htm | 167543 | 2012-06-27 15:48:49 |
| report.css | 2721 | 2012-06-27 15:48:49 |
| Show.js | 6423 | 2012-06-27 15:48:49 |