Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000025475-20-000048-index-headers.html | 2020-03-05 16:25:06 | |
| 0000025475-20-000048-index.html | 2020-03-05 16:25:06 | |
| 0000025475-20-000048.txt | 2020-03-05 16:25:06 | |
 0000025475-20-000048-xbrl.zip | 454305 | 2020-03-05 16:25:06 |
| a10-k123119.htm | 3640862 | 2020-03-05 16:25:06 |
 chart-511ed7ae2c5e54b6910a08.jpg | 45945 | 2020-03-05 16:25:06 |
| crda-20191231.xml | 4429019 | 2020-03-05 16:25:06 |
| crda-20191231.xsd | 86746 | 2020-03-05 16:25:06 |
| crda-20191231_cal.xml | 162095 | 2020-03-05 16:25:06 |
| crda-20191231_def.xml | 580569 | 2020-03-05 16:25:06 |
| crda-20191231_lab.xml | 1277809 | 2020-03-05 16:25:06 |
| crda-20191231_pre.xml | 833824 | 2020-03-05 16:25:06 |
| exhibit1026-123119.htm | 5066 | 2020-03-05 16:25:06 |
| exhibit211-123119.htm | 13427 | 2020-03-05 16:25:06 |
| exhibit231-123119.htm | 14796 | 2020-03-05 16:25:06 |
| exhibit311-123119.htm | 16071 | 2020-03-05 16:25:06 |
| exhibit312-123119.htm | 15876 | 2020-03-05 16:25:06 |
| exhibit321-123119.htm | 9243 | 2020-03-05 16:25:06 |
| exhibit322-123119.htm | 9588 | 2020-03-05 16:25:06 |
| FilingSummary.xml | 59651 | 2020-03-05 16:25:06 |
| Financial_Report.xlsx | 160381 | 2020-03-05 16:25:06 |
| R1.htm | 39465 | 2020-03-05 16:25:06 |
| R10.htm | 8399 | 2020-03-05 16:25:06 |
| R11.htm | 115437 | 2020-03-05 16:25:06 |
| R12.htm | 142341 | 2020-03-05 16:25:06 |
| R13.htm | 11661 | 2020-03-05 16:25:06 |
| R14.htm | 134663 | 2020-03-05 16:25:06 |
| R15.htm | 54639 | 2020-03-05 16:25:06 |
| R16.htm | 128147 | 2020-03-05 16:25:06 |
| R17.htm | 163023 | 2020-03-05 16:25:06 |
| R18.htm | 166625 | 2020-03-05 16:25:06 |
| R19.htm | 103357 | 2020-03-05 16:25:06 |
| R2.htm | 81063 | 2020-03-05 16:25:06 |
| R20.htm | 39021 | 2020-03-05 16:25:06 |
| R21.htm | 131095 | 2020-03-05 16:25:06 |
| R22.htm | 245718 | 2020-03-05 16:25:06 |
| R23.htm | 179298 | 2020-03-05 16:25:06 |
| R24.htm | 5250 | 2020-03-05 16:25:06 |
| R25.htm | 10007 | 2020-03-05 16:25:06 |
| R26.htm | 81152 | 2020-03-05 16:25:06 |
| R27.htm | 110921 | 2020-03-05 16:25:06 |
| R28.htm | 49908 | 2020-03-05 16:25:06 |
| R29.htm | 117893 | 2020-03-05 16:25:06 |
| R3.htm | 4835 | 2020-03-05 16:25:06 |
| R30.htm | 136845 | 2020-03-05 16:25:06 |
| R31.htm | 40866 | 2020-03-05 16:25:06 |
| R32.htm | 43691 | 2020-03-05 16:25:06 |
| R33.htm | 159586 | 2020-03-05 16:25:06 |
| R34.htm | 163771 | 2020-03-05 16:25:06 |
| R35.htm | 101108 | 2020-03-05 16:25:06 |
| R36.htm | 36995 | 2020-03-05 16:25:06 |
| R37.htm | 105536 | 2020-03-05 16:25:06 |
| R38.htm | 237040 | 2020-03-05 16:25:06 |
| R39.htm | 184270 | 2020-03-05 16:25:06 |
| R4.htm | 29849 | 2020-03-05 16:25:06 |
| R40.htm | 78976 | 2020-03-05 16:25:06 |
| R41.htm | 84033 | 2020-03-05 16:25:06 |
| R42.htm | 15717 | 2020-03-05 16:25:06 |
| R43.htm | 40826 | 2020-03-05 16:25:06 |
| R44.htm | 13279 | 2020-03-05 16:25:06 |
| R45.htm | 22996 | 2020-03-05 16:25:06 |
| R46.htm | 71631 | 2020-03-05 16:25:06 |
| R47.htm | 10974 | 2020-03-05 16:25:06 |
| R48.htm | 43515 | 2020-03-05 16:25:06 |
| R49.htm | 24398 | 2020-03-05 16:25:06 |
| R5.htm | 10320 | 2020-03-05 16:25:06 |
| R50.htm | 39741 | 2020-03-05 16:25:06 |
| R51.htm | 36708 | 2020-03-05 16:25:06 |
| R52.htm | 9269 | 2020-03-05 16:25:06 |
| R53.htm | 21801 | 2020-03-05 16:25:06 |
| R54.htm | 61171 | 2020-03-05 16:25:06 |
| R55.htm | 43626 | 2020-03-05 16:25:06 |
| R56.htm | 21342 | 2020-03-05 16:25:06 |
| R57.htm | 14704 | 2020-03-05 16:25:06 |
| R58.htm | 8882 | 2020-03-05 16:25:06 |
| R59.htm | 9101 | 2020-03-05 16:25:06 |
| R6.htm | 114060 | 2020-03-05 16:25:06 |
| R60.htm | 19729 | 2020-03-05 16:25:06 |
| R61.htm | 9072 | 2020-03-05 16:25:06 |
| R62.htm | 14990 | 2020-03-05 16:25:06 |
| R63.htm | 32704 | 2020-03-05 16:25:06 |
| R64.htm | 43309 | 2020-03-05 16:25:06 |
| R65.htm | 53993 | 2020-03-05 16:25:06 |
| R66.htm | 7255 | 2020-03-05 16:25:06 |
| R67.htm | 20467 | 2020-03-05 16:25:06 |
| R68.htm | 35049 | 2020-03-05 16:25:06 |
| R69.htm | 9637 | 2020-03-05 16:25:06 |
| R7.htm | 19144 | 2020-03-05 16:25:06 |
| R70.htm | 45918 | 2020-03-05 16:25:06 |
| R71.htm | 25370 | 2020-03-05 16:25:06 |
| R72.htm | 19198 | 2020-03-05 16:25:06 |
| R73.htm | 32617 | 2020-03-05 16:25:06 |
| R74.htm | 13494 | 2020-03-05 16:25:06 |
| R75.htm | 20921 | 2020-03-05 16:25:06 |
| R76.htm | 26751 | 2020-03-05 16:25:06 |
| R77.htm | 24180 | 2020-03-05 16:25:06 |
| R78.htm | 28790 | 2020-03-05 16:25:06 |
| R79.htm | 9591 | 2020-03-05 16:25:06 |
| R8.htm | 88077 | 2020-03-05 16:25:06 |
| R80.htm | 34518 | 2020-03-05 16:25:06 |
| R81.htm | 79414 | 2020-03-05 16:25:06 |
| R82.htm | 43714 | 2020-03-05 16:25:06 |
| R83.htm | 36090 | 2020-03-05 16:25:06 |
| R84.htm | 43618 | 2020-03-05 16:25:06 |
| R85.htm | 37612 | 2020-03-05 16:25:06 |
| R86.htm | 244735 | 2020-03-05 16:25:06 |
| R87.htm | 42012 | 2020-03-05 16:25:06 |
| R88.htm | 14525 | 2020-03-05 16:25:06 |
| R89.htm | 9725 | 2020-03-05 16:25:06 |
| R9.htm | 66772 | 2020-03-05 16:25:06 |
| R90.htm | 33879 | 2020-03-05 16:25:06 |
| R91.htm | 37521 | 2020-03-05 16:25:06 |
| R92.htm | 20146 | 2020-03-05 16:25:06 |
| R93.htm | 5859 | 2020-03-05 16:25:06 |
| R94.htm | 11841 | 2020-03-05 16:25:06 |
| R95.htm | 12351 | 2020-03-05 16:25:06 |
| R96.htm | 27571 | 2020-03-05 16:25:06 |
| report.css | 2767 | 2020-03-05 16:25:06 |
| Show.js | 1085 | 2020-03-05 16:25:06 |