Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0000858470-19-000008-index-headers.html | 2019-02-26 14:57:51 | |
| 0000858470-19-000008-index.html | 2019-02-26 14:57:51 | |
| 0000858470-19-000008.txt | 2019-02-26 14:57:51 | |
 0000858470-19-000008-xbrl.zip | 385873 | 2019-02-26 14:57:51 |
 chart-7a7cf513756557e9ab4.jpg | 44940 | 2019-02-26 14:57:51 |
| cog-12312018x10k.htm | 3598427 | 2019-02-26 14:57:51 |
| cog-20181231.xml | 3682582 | 2019-02-26 14:57:51 |
| cog-20181231.xsd | 84235 | 2019-02-26 14:57:51 |
| cog-20181231_cal.xml | 172678 | 2019-02-26 14:57:51 |
| cog-20181231_def.xml | 411858 | 2019-02-26 14:57:51 |
| cog-20181231_lab.xml | 1192318 | 2019-02-26 14:57:51 |
| cog-20181231_pre.xml | 725024 | 2019-02-26 14:57:51 |
| cog12312018ex211.htm | 2664 | 2019-02-26 14:57:51 |
| cog12312018ex231.htm | 3543 | 2019-02-26 14:57:51 |
| cog12312018ex232.htm | 8402 | 2019-02-26 14:57:51 |
| cog12312018ex311.htm | 8525 | 2019-02-26 14:57:51 |
| cog12312018ex312.htm | 8545 | 2019-02-26 14:57:51 |
| cog12312018ex321.htm | 8566 | 2019-02-26 14:57:51 |
| cog12312018ex991.htm | 65349 | 2019-02-26 14:57:51 |
| FilingSummary.xml | 57458 | 2019-02-26 14:57:51 |
| Financial_Report.xlsx | 137821 | 2019-02-26 14:57:51 |
| R1.htm | 33854 | 2019-02-26 14:57:51 |
| R10.htm | 98583 | 2019-02-26 14:57:51 |
| R11.htm | 12091 | 2019-02-26 14:57:51 |
| R12.htm | 76634 | 2019-02-26 14:57:51 |
| R13.htm | 76850 | 2019-02-26 14:57:51 |
| R14.htm | 94607 | 2019-02-26 14:57:51 |
| R15.htm | 117443 | 2019-02-26 14:57:51 |
| R16.htm | 135845 | 2019-02-26 14:57:51 |
| R17.htm | 19906 | 2019-02-26 14:57:51 |
| R18.htm | 28274 | 2019-02-26 14:57:51 |
| R19.htm | 159074 | 2019-02-26 14:57:51 |
| R2.htm | 98339 | 2019-02-26 14:57:51 |
| R20.htm | 178700 | 2019-02-26 14:57:51 |
| R21.htm | 22793 | 2019-02-26 14:57:51 |
| R22.htm | 319891 | 2019-02-26 14:57:51 |
| R23.htm | 31739 | 2019-02-26 14:57:51 |
| R24.htm | 46780 | 2019-02-26 14:57:51 |
| R25.htm | 70766 | 2019-02-26 14:57:51 |
| R26.htm | 15893 | 2019-02-26 14:57:51 |
| R27.htm | 136934 | 2019-02-26 14:57:51 |
| R28.htm | 32964 | 2019-02-26 14:57:51 |
| R29.htm | 77860 | 2019-02-26 14:57:51 |
| R3.htm | 10829 | 2019-02-26 14:57:51 |
| R30.htm | 63388 | 2019-02-26 14:57:51 |
| R31.htm | 71908 | 2019-02-26 14:57:51 |
| R32.htm | 158475 | 2019-02-26 14:57:51 |
| R33.htm | 129784 | 2019-02-26 14:57:51 |
| R34.htm | 19646 | 2019-02-26 14:57:51 |
| R35.htm | 25020 | 2019-02-26 14:57:51 |
| R36.htm | 135219 | 2019-02-26 14:57:51 |
| R37.htm | 165175 | 2019-02-26 14:57:51 |
| R38.htm | 275018 | 2019-02-26 14:57:51 |
| R39.htm | 33293 | 2019-02-26 14:57:51 |
| R4.htm | 82581 | 2019-02-26 14:57:51 |
| R40.htm | 48231 | 2019-02-26 14:57:51 |
| R41.htm | 70176 | 2019-02-26 14:57:51 |
| R42.htm | 15365 | 2019-02-26 14:57:51 |
| R43.htm | 63949 | 2019-02-26 14:57:51 |
| R44.htm | 19874 | 2019-02-26 14:57:51 |
| R45.htm | 29817 | 2019-02-26 14:57:51 |
| R46.htm | 18674 | 2019-02-26 14:57:51 |
| R47.htm | 29497 | 2019-02-26 14:57:51 |
| R48.htm | 23037 | 2019-02-26 14:57:51 |
| R49.htm | 12107 | 2019-02-26 14:57:51 |
| R5.htm | 24771 | 2019-02-26 14:57:51 |
| R50.htm | 9035 | 2019-02-26 14:57:51 |
| R51.htm | 23323 | 2019-02-26 14:57:51 |
| R52.htm | 27021 | 2019-02-26 14:57:51 |
| R53.htm | 28072 | 2019-02-26 14:57:51 |
| R54.htm | 141684 | 2019-02-26 14:57:51 |
| R55.htm | 34735 | 2019-02-26 14:57:51 |
| R56.htm | 25217 | 2019-02-26 14:57:51 |
| R57.htm | 14946 | 2019-02-26 14:57:51 |
| R58.htm | 32706 | 2019-02-26 14:57:51 |
| R59.htm | 13705 | 2019-02-26 14:57:51 |
| R6.htm | 9980 | 2019-02-26 14:57:51 |
| R60.htm | 30812 | 2019-02-26 14:57:51 |
| R61.htm | 16104 | 2019-02-26 14:57:51 |
| R62.htm | 15461 | 2019-02-26 14:57:51 |
| R63.htm | 12737 | 2019-02-26 14:57:51 |
| R64.htm | 14550 | 2019-02-26 14:57:51 |
| R65.htm | 4702 | 2019-02-26 14:57:51 |
| R66.htm | 17586 | 2019-02-26 14:57:51 |
| R67.htm | 19359 | 2019-02-26 14:57:51 |
| R68.htm | 4431 | 2019-02-26 14:57:51 |
| R69.htm | 22617 | 2019-02-26 14:57:51 |
| R7.htm | 89758 | 2019-02-26 14:57:51 |
| R70.htm | 48752 | 2019-02-26 14:57:51 |
| R71.htm | 44580 | 2019-02-26 14:57:51 |
| R72.htm | 30453 | 2019-02-26 14:57:51 |
| R73.htm | 7669 | 2019-02-26 14:57:51 |
| R74.htm | 37254 | 2019-02-26 14:57:51 |
| R75.htm | 27480 | 2019-02-26 14:57:51 |
| R76.htm | 11635 | 2019-02-26 14:57:51 |
| R77.htm | 10212 | 2019-02-26 14:57:51 |
| R78.htm | 32789 | 2019-02-26 14:57:51 |
| R79.htm | 17571 | 2019-02-26 14:57:51 |
| R8.htm | 58426 | 2019-02-26 14:57:51 |
| R80.htm | 11383 | 2019-02-26 14:57:51 |
| R81.htm | 14272 | 2019-02-26 14:57:51 |
| R82.htm | 51221 | 2019-02-26 14:57:51 |
| R83.htm | 124267 | 2019-02-26 14:57:51 |
| R84.htm | 32730 | 2019-02-26 14:57:51 |
| R85.htm | 29036 | 2019-02-26 14:57:51 |
| R86.htm | 29331 | 2019-02-26 14:57:51 |
| R87.htm | 40387 | 2019-02-26 14:57:51 |
| R88.htm | 27177 | 2019-02-26 14:57:51 |
| R89.htm | 9943 | 2019-02-26 14:57:51 |
| R9.htm | 5274 | 2019-02-26 14:57:51 |
| R90.htm | 10499 | 2019-02-26 14:57:51 |
| R91.htm | 17568 | 2019-02-26 14:57:51 |
| R92.htm | 23701 | 2019-02-26 14:57:51 |
| R93.htm | 69586 | 2019-02-26 14:57:51 |
| R94.htm | 7420 | 2019-02-26 14:57:51 |
| report.css | 2768 | 2019-02-26 14:57:51 |
| Show.js | 1086 | 2019-02-26 14:57:51 |