Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000896159-19-000005-index-headers.html | 2019-02-28 17:28:33 | |
| 0000896159-19-000005-index.html | 2019-02-28 17:28:33 | |
| 0000896159-19-000005.txt | 2019-02-28 17:28:33 | |
 0000896159-19-000005-xbrl.zip | 1126242 | 2019-02-28 17:28:33 |
| cb-12312018x10k.htm | 11772668 | 2019-02-28 17:28:33 |
| cb-12312018xex1012.htm | 13410 | 2019-02-28 17:28:33 |
| cb-12312018xex211.htm | 362272 | 2019-02-28 17:28:33 |
| cb-12312018xex231.htm | 3580 | 2019-02-28 17:28:33 |
| cb-12312018xex311.htm | 10534 | 2019-02-28 17:28:33 |
| cb-12312018xex312.htm | 10728 | 2019-02-28 17:28:33 |
| cb-12312018xex321.htm | 4350 | 2019-02-28 17:28:33 |
| cb-12312018xex322.htm | 4167 | 2019-02-28 17:28:33 |
| cb-20181231.xml | 19898179 | 2019-02-28 17:28:33 |
| cb-20181231.xsd | 153988 | 2019-02-28 17:28:33 |
| cb-20181231_cal.xml | 321666 | 2019-02-28 17:28:33 |
| cb-20181231_def.xml | 1280009 | 2019-02-28 17:28:33 |
| cb-20181231_lab.xml | 2197444 | 2019-02-28 17:28:33 |
| cb-20181231_pre.xml | 1611055 | 2019-02-28 17:28:33 |
 chart-a63cd71b30bef31dafa.jpg | 46583 | 2019-02-28 17:28:33 |
| FilingSummary.xml | 91777 | 2019-02-28 17:28:33 |
| Financial_Report.xlsx | 310402 | 2019-02-28 17:28:33 |
| R1.htm | 35639 | 2019-02-28 17:28:33 |
| R10.htm | 142109 | 2019-02-28 17:28:33 |
| R100.htm | 48465 | 2019-02-28 17:28:33 |
| R101.htm | 152673 | 2019-02-28 17:28:33 |
| R102.htm | 35278 | 2019-02-28 17:28:33 |
| R103.htm | 63161 | 2019-02-28 17:28:33 |
| R104.htm | 21408 | 2019-02-28 17:28:33 |
| R105.htm | 31523 | 2019-02-28 17:28:33 |
| R106.htm | 30395 | 2019-02-28 17:28:33 |
| R107.htm | 19376 | 2019-02-28 17:28:33 |
| R108.htm | 38936 | 2019-02-28 17:28:33 |
| R109.htm | 9116 | 2019-02-28 17:28:33 |
| R11.htm | 575222 | 2019-02-28 17:28:33 |
| R110.htm | 13051 | 2019-02-28 17:28:33 |
| R111.htm | 16451 | 2019-02-28 17:28:33 |
| R112.htm | 69592 | 2019-02-28 17:28:33 |
| R113.htm | 20769 | 2019-02-28 17:28:33 |
| R114.htm | 13534 | 2019-02-28 17:28:33 |
| R115.htm | 43387 | 2019-02-28 17:28:33 |
| R116.htm | 40258 | 2019-02-28 17:28:33 |
| R117.htm | 62200 | 2019-02-28 17:28:33 |
| R118.htm | 66832 | 2019-02-28 17:28:33 |
| R119.htm | 18382 | 2019-02-28 17:28:33 |
| R12.htm | 635093 | 2019-02-28 17:28:33 |
| R120.htm | 20357 | 2019-02-28 17:28:33 |
| R121.htm | 15698 | 2019-02-28 17:28:33 |
| R122.htm | 76529 | 2019-02-28 17:28:33 |
| R123.htm | 28215 | 2019-02-28 17:28:33 |
| R124.htm | 14652 | 2019-02-28 17:28:33 |
| R125.htm | 53116 | 2019-02-28 17:28:33 |
| R126.htm | 23576 | 2019-02-28 17:28:33 |
| R127.htm | 16667 | 2019-02-28 17:28:33 |
| R128.htm | 154311 | 2019-02-28 17:28:33 |
| R129.htm | 76432 | 2019-02-28 17:28:33 |
| R13.htm | 170399 | 2019-02-28 17:28:33 |
| R130.htm | 13344 | 2019-02-28 17:28:33 |
| R131.htm | 31084 | 2019-02-28 17:28:33 |
| R132.htm | 40982 | 2019-02-28 17:28:33 |
| R133.htm | 20611 | 2019-02-28 17:28:33 |
| R134.htm | 137376 | 2019-02-28 17:28:33 |
| R135.htm | 99493 | 2019-02-28 17:28:33 |
| R136.htm | 196313 | 2019-02-28 17:28:33 |
| R137.htm | 35966 | 2019-02-28 17:28:33 |
| R138.htm | 12748 | 2019-02-28 17:28:33 |
| R139.htm | 52714 | 2019-02-28 17:28:33 |
| R14.htm | 113716 | 2019-02-28 17:28:33 |
| R140.htm | 63153 | 2019-02-28 17:28:33 |
| R141.htm | 39138 | 2019-02-28 17:28:33 |
| R142.htm | 35095 | 2019-02-28 17:28:33 |
| R143.htm | 37673 | 2019-02-28 17:28:33 |
| R144.htm | 28387 | 2019-02-28 17:28:33 |
| R15.htm | 2572326 | 2019-02-28 17:28:33 |
| R16.htm | 143927 | 2019-02-28 17:28:33 |
| R17.htm | 93445 | 2019-02-28 17:28:33 |
| R18.htm | 239484 | 2019-02-28 17:28:33 |
| R19.htm | 69041 | 2019-02-28 17:28:33 |
| R2.htm | 111730 | 2019-02-28 17:28:33 |
| R20.htm | 175240 | 2019-02-28 17:28:33 |
| R21.htm | 596466 | 2019-02-28 17:28:33 |
| R22.htm | 27384 | 2019-02-28 17:28:33 |
| R23.htm | 431755 | 2019-02-28 17:28:33 |
| R24.htm | 35648 | 2019-02-28 17:28:33 |
| R25.htm | 57478 | 2019-02-28 17:28:33 |
| R26.htm | 34493 | 2019-02-28 17:28:33 |
| R27.htm | 887057 | 2019-02-28 17:28:33 |
| R28.htm | 94976 | 2019-02-28 17:28:33 |
| R29.htm | 54510 | 2019-02-28 17:28:33 |
| R3.htm | 21842 | 2019-02-28 17:28:33 |
| R30.htm | 113920 | 2019-02-28 17:28:33 |
| R31.htm | 79505 | 2019-02-28 17:28:33 |
| R32.htm | 52512 | 2019-02-28 17:28:33 |
| R33.htm | 175702 | 2019-02-28 17:28:33 |
| R34.htm | 18531 | 2019-02-28 17:28:33 |
| R35.htm | 701682 | 2019-02-28 17:28:33 |
| R36.htm | 864257 | 2019-02-28 17:28:33 |
| R37.htm | 154555 | 2019-02-28 17:28:33 |
| R38.htm | 111596 | 2019-02-28 17:28:33 |
| R39.htm | 2428977 | 2019-02-28 17:28:33 |
| R4.htm | 103313 | 2019-02-28 17:28:33 |
| R40.htm | 135396 | 2019-02-28 17:28:33 |
| R41.htm | 80085 | 2019-02-28 17:28:33 |
| R42.htm | 217778 | 2019-02-28 17:28:33 |
| R43.htm | 56377 | 2019-02-28 17:28:33 |
| R44.htm | 158786 | 2019-02-28 17:28:33 |
| R45.htm | 751749 | 2019-02-28 17:28:33 |
| R46.htm | 26036 | 2019-02-28 17:28:33 |
| R47.htm | 419766 | 2019-02-28 17:28:33 |
| R48.htm | 35287 | 2019-02-28 17:28:33 |
| R49.htm | 54832 | 2019-02-28 17:28:33 |
| R5.htm | 9079 | 2019-02-28 17:28:33 |
| R50.htm | 27487 | 2019-02-28 17:28:33 |
| R51.htm | 886228 | 2019-02-28 17:28:33 |
| R52.htm | 93738 | 2019-02-28 17:28:33 |
| R53.htm | 180939 | 2019-02-28 17:28:33 |
| R54.htm | 17660 | 2019-02-28 17:28:33 |
| R55.htm | 53226 | 2019-02-28 17:28:33 |
| R56.htm | 33494 | 2019-02-28 17:28:33 |
| R57.htm | 32303 | 2019-02-28 17:28:33 |
| R58.htm | 72699 | 2019-02-28 17:28:33 |
| R59.htm | 23883 | 2019-02-28 17:28:33 |
| R6.htm | 80542 | 2019-02-28 17:28:33 |
| R60.htm | 19161 | 2019-02-28 17:28:33 |
| R61.htm | 97546 | 2019-02-28 17:28:33 |
| R62.htm | 13307 | 2019-02-28 17:28:33 |
| R63.htm | 34752 | 2019-02-28 17:28:33 |
| R64.htm | 28049 | 2019-02-28 17:28:33 |
| R65.htm | 76478 | 2019-02-28 17:28:33 |
| R66.htm | 32948 | 2019-02-28 17:28:33 |
| R67.htm | 13723 | 2019-02-28 17:28:33 |
| R68.htm | 37726 | 2019-02-28 17:28:33 |
| R69.htm | 16233 | 2019-02-28 17:28:33 |
| R7.htm | 13900 | 2019-02-28 17:28:33 |
| R70.htm | 102539 | 2019-02-28 17:28:33 |
| R71.htm | 42574 | 2019-02-28 17:28:33 |
| R72.htm | 26137 | 2019-02-28 17:28:33 |
| R73.htm | 62011 | 2019-02-28 17:28:33 |
| R74.htm | 44598 | 2019-02-28 17:28:33 |
| R75.htm | 80310 | 2019-02-28 17:28:33 |
| R76.htm | 30247 | 2019-02-28 17:28:33 |
| R77.htm | 22966 | 2019-02-28 17:28:33 |
| R78.htm | 26776 | 2019-02-28 17:28:33 |
| R79.htm | 26710 | 2019-02-28 17:28:33 |
| R8.htm | 137472 | 2019-02-28 17:28:33 |
| R80.htm | 17642 | 2019-02-28 17:28:33 |
| R81.htm | 38310 | 2019-02-28 17:28:33 |
| R82.htm | 13472 | 2019-02-28 17:28:33 |
| R83.htm | 23342 | 2019-02-28 17:28:33 |
| R84.htm | 38556 | 2019-02-28 17:28:33 |
| R85.htm | 26469 | 2019-02-28 17:28:33 |
| R86.htm | 35368 | 2019-02-28 17:28:33 |
| R87.htm | 48797 | 2019-02-28 17:28:33 |
| R88.htm | 504675 | 2019-02-28 17:28:33 |
| R89.htm | 30124 | 2019-02-28 17:28:33 |
| R9.htm | 4588 | 2019-02-28 17:28:33 |
| R90.htm | 68387 | 2019-02-28 17:28:33 |
| R91.htm | 117114 | 2019-02-28 17:28:33 |
| R92.htm | 53454 | 2019-02-28 17:28:33 |
| R93.htm | 38457 | 2019-02-28 17:28:33 |
| R94.htm | 314029 | 2019-02-28 17:28:33 |
| R95.htm | 48748 | 2019-02-28 17:28:33 |
| R96.htm | 22469 | 2019-02-28 17:28:33 |
| R97.htm | 22779 | 2019-02-28 17:28:33 |
| R98.htm | 53537 | 2019-02-28 17:28:33 |
| R99.htm | 15715 | 2019-02-28 17:28:33 |
| report.css | 2768 | 2019-02-28 17:28:33 |
| Show.js | 1086 | 2019-02-28 17:28:33 |