Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001306830-20-000018-index-headers.html | 2020-02-06 16:24:03 | |
| 0001306830-20-000018-index.html | 2020-02-06 16:24:03 | |
| 0001306830-20-000018.txt | 2020-02-06 16:24:03 | |
 0001306830-20-000018-xbrl.zip | 932153 | 2020-02-06 16:24:03 |
| ce-20191231.xsd | 138580 | 2020-02-06 16:24:03 |
| ce-20191231x10k.htm | 6795406 | 2020-02-06 16:24:03 |
| ce-20191231x10k_htm.xml | 9245572 | 2020-02-06 16:24:03 |
| ce-20191231_cal.xml | 263243 | 2020-02-06 16:24:03 |
| ce-20191231_def.xml | 913680 | 2020-02-06 16:24:03 |
| ce-20191231_lab.xml | 1646521 | 2020-02-06 16:24:03 |
| ce-20191231_pre.xml | 1295172 | 2020-02-06 16:24:03 |
| ex1012c-10k123119.htm | 149972 | 2020-02-06 16:24:03 |
| ex1015-10k123119.htm | 139493 | 2020-02-06 16:24:03 |
| ex1015a-10k123119.htm | 7974 | 2020-02-06 16:24:03 |
| ex1016-10k123119.htm | 2986 | 2020-02-06 16:24:03 |
 ex103eimage1a10a01a03a01a17.gif | 23023 | 2020-02-06 16:24:03 |
| ex104c-10k123119.htm | 25995 | 2020-02-06 16:24:03 |
| ex211-10k123119.htm | 118886 | 2020-02-06 16:24:03 |
| ex231-10k123119.htm | 5383 | 2020-02-06 16:24:03 |
| ex311-10k123119.htm | 13324 | 2020-02-06 16:24:03 |
| ex312-10k123119.htm | 12339 | 2020-02-06 16:24:03 |
| ex321-10k123119.htm | 8831 | 2020-02-06 16:24:03 |
| ex322-10k123119.htm | 8026 | 2020-02-06 16:24:03 |
| ex411-10k123119.htm | 201506 | 2020-02-06 16:24:03 |
| FilingSummary.xml | 128223 | 2020-02-06 16:24:03 |
| Financial_Report.xlsx | 256215 | 2020-02-06 16:24:03 |
| MetaLinks.json | 1561745 | 2020-02-06 16:24:03 |
| R1.htm | 69486 | 2020-02-06 16:24:03 |
| R10.htm | 34731 | 2020-02-06 16:24:03 |
| R100.htm | 4210 | 2020-02-06 16:24:03 |
| R101.htm | 23815 | 2020-02-06 16:24:03 |
| R102.htm | 83241 | 2020-02-06 16:24:03 |
| R103.htm | 12947 | 2020-02-06 16:24:03 |
| R104.htm | 29274 | 2020-02-06 16:24:03 |
| R105.htm | 42537 | 2020-02-06 16:24:03 |
| R106.htm | 27824 | 2020-02-06 16:24:03 |
| R107.htm | 18775 | 2020-02-06 16:24:03 |
| R108.htm | 4892 | 2020-02-06 16:24:03 |
| R109.htm | 7648 | 2020-02-06 16:24:03 |
| R11.htm | 18529 | 2020-02-06 16:24:03 |
| R110.htm | 5475 | 2020-02-06 16:24:03 |
| R111.htm | 4589 | 2020-02-06 16:24:03 |
| R112.htm | 98527 | 2020-02-06 16:24:03 |
| R113.htm | 14370 | 2020-02-06 16:24:03 |
| R114.htm | 9880 | 2020-02-06 16:24:03 |
| R115.htm | 6839 | 2020-02-06 16:24:03 |
| R116.htm | 11251 | 2020-02-06 16:24:03 |
| R117.htm | 4562 | 2020-02-06 16:24:03 |
| R118.htm | 33411 | 2020-02-06 16:24:03 |
| R119.htm | 16116 | 2020-02-06 16:24:03 |
| R12.htm | 41637 | 2020-02-06 16:24:03 |
| R120.htm | 7021 | 2020-02-06 16:24:03 |
| R121.htm | 17701 | 2020-02-06 16:24:03 |
| R122.htm | 41136 | 2020-02-06 16:24:03 |
| R123.htm | 11358 | 2020-02-06 16:24:03 |
| R124.htm | 6574 | 2020-02-06 16:24:03 |
| R125.htm | 27532 | 2020-02-06 16:24:03 |
| R126.htm | 81515 | 2020-02-06 16:24:03 |
| R127.htm | 10331 | 2020-02-06 16:24:03 |
| R128.htm | 21086 | 2020-02-06 16:24:03 |
| R129.htm | 20400 | 2020-02-06 16:24:03 |
| R13.htm | 5770 | 2020-02-06 16:24:03 |
| R130.htm | 14570 | 2020-02-06 16:24:03 |
| R131.htm | 18146 | 2020-02-06 16:24:03 |
| R132.htm | 11237 | 2020-02-06 16:24:03 |
| R133.htm | 7825 | 2020-02-06 16:24:03 |
| R134.htm | 16183 | 2020-02-06 16:24:03 |
| R135.htm | 42308 | 2020-02-06 16:24:03 |
| R136.htm | 29534 | 2020-02-06 16:24:03 |
| R137.htm | 10532 | 2020-02-06 16:24:03 |
| R138.htm | 51970 | 2020-02-06 16:24:03 |
| R139.htm | 54380 | 2020-02-06 16:24:03 |
| R14.htm | 20541 | 2020-02-06 16:24:03 |
| R140.htm | 17111 | 2020-02-06 16:24:03 |
| R141.htm | 10377 | 2020-02-06 16:24:03 |
| R142.htm | 22198 | 2020-02-06 16:24:03 |
| R143.htm | 31961 | 2020-02-06 16:24:03 |
| R144.htm | 25937 | 2020-02-06 16:24:03 |
| R145.htm | 38700 | 2020-02-06 16:24:03 |
| R146.htm | 32237 | 2020-02-06 16:24:03 |
| R147.htm | 27628 | 2020-02-06 16:24:03 |
| R148.htm | 10843 | 2020-02-06 16:24:03 |
| R149.htm | 4888 | 2020-02-06 16:24:03 |
| R15.htm | 12099 | 2020-02-06 16:24:03 |
| R150.htm | 28310 | 2020-02-06 16:24:03 |
| R151.htm | 6747 | 2020-02-06 16:24:03 |
| R152.htm | 23894 | 2020-02-06 16:24:03 |
| R153.htm | 6774 | 2020-02-06 16:24:03 |
| R154.htm | 6452 | 2020-02-06 16:24:03 |
| R155.htm | 20011 | 2020-02-06 16:24:03 |
| R156.htm | 6467 | 2020-02-06 16:24:03 |
| R157.htm | 15774 | 2020-02-06 16:24:03 |
| R158.htm | 16988 | 2020-02-06 16:24:03 |
| R159.htm | 11296 | 2020-02-06 16:24:03 |
| R16.htm | 167927 | 2020-02-06 16:24:03 |
| R160.htm | 13430 | 2020-02-06 16:24:03 |
| R161.htm | 39439 | 2020-02-06 16:24:03 |
| R162.htm | 4265 | 2020-02-06 16:24:03 |
| R163.htm | 38997 | 2020-02-06 16:24:03 |
| R164.htm | 7294 | 2020-02-06 16:24:03 |
| R165.htm | 24458 | 2020-02-06 16:24:03 |
| R166.htm | 6272 | 2020-02-06 16:24:03 |
| R167.htm | 6433 | 2020-02-06 16:24:03 |
| R168.htm | 45933 | 2020-02-06 16:24:03 |
| R169.htm | 16410 | 2020-02-06 16:24:03 |
| R17.htm | 34085 | 2020-02-06 16:24:03 |
| R170.htm | 16504 | 2020-02-06 16:24:03 |
| R171.htm | 7082 | 2020-02-06 16:24:03 |
| R172.htm | 70578 | 2020-02-06 16:24:03 |
| R173.htm | 24017 | 2020-02-06 16:24:03 |
| R174.htm | 18262 | 2020-02-06 16:24:03 |
| R175.htm | 4565 | 2020-02-06 16:24:03 |
| R176.htm | 4721 | 2020-02-06 16:24:03 |
| R177.htm | 17729 | 2020-02-06 16:24:03 |
| R178.htm | 63738 | 2020-02-06 16:24:03 |
| R179.htm | 27455 | 2020-02-06 16:24:03 |
| R18.htm | 119659 | 2020-02-06 16:24:03 |
| R180.htm | 38827 | 2020-02-06 16:24:03 |
| R181.htm | 25055 | 2020-02-06 16:24:03 |
| R182.htm | 136135 | 2020-02-06 16:24:03 |
| R183.htm | 61494 | 2020-02-06 16:24:03 |
| R184.htm | 170915 | 2020-02-06 16:24:03 |
| R185.htm | 130852 | 2020-02-06 16:24:03 |
| R186.htm | 4129 | 2020-02-06 16:24:03 |
| R187.htm | 7112 | 2020-02-06 16:24:03 |
| R19.htm | 26161 | 2020-02-06 16:24:03 |
| R2.htm | 122489 | 2020-02-06 16:24:03 |
| R20.htm | 35216 | 2020-02-06 16:24:03 |
| R21.htm | 74284 | 2020-02-06 16:24:03 |
| R22.htm | 420867 | 2020-02-06 16:24:03 |
| R23.htm | 38177 | 2020-02-06 16:24:03 |
| R24.htm | 130667 | 2020-02-06 16:24:03 |
| R25.htm | 115940 | 2020-02-06 16:24:03 |
| R26.htm | 133367 | 2020-02-06 16:24:03 |
| R27.htm | 55507 | 2020-02-06 16:24:03 |
| R28.htm | 76147 | 2020-02-06 16:24:03 |
| R29.htm | 131793 | 2020-02-06 16:24:03 |
| R3.htm | 31232 | 2020-02-06 16:24:03 |
| R30.htm | 117396 | 2020-02-06 16:24:03 |
| R31.htm | 17377 | 2020-02-06 16:24:03 |
| R32.htm | 21602 | 2020-02-06 16:24:03 |
| R33.htm | 155387 | 2020-02-06 16:24:03 |
| R34.htm | 36346 | 2020-02-06 16:24:03 |
| R35.htm | 24461 | 2020-02-06 16:24:03 |
| R36.htm | 1104699 | 2020-02-06 16:24:03 |
| R37.htm | 5862 | 2020-02-06 16:24:03 |
| R38.htm | 144798 | 2020-02-06 16:24:03 |
| R39.htm | 6491 | 2020-02-06 16:24:03 |
| R4.htm | 98298 | 2020-02-06 16:24:03 |
| R40.htm | 31314 | 2020-02-06 16:24:03 |
| R41.htm | 17560 | 2020-02-06 16:24:03 |
| R42.htm | 41575 | 2020-02-06 16:24:03 |
| R43.htm | 22322 | 2020-02-06 16:24:03 |
| R44.htm | 13117 | 2020-02-06 16:24:03 |
| R45.htm | 174691 | 2020-02-06 16:24:03 |
| R46.htm | 37341 | 2020-02-06 16:24:03 |
| R47.htm | 122920 | 2020-02-06 16:24:03 |
| R48.htm | 25931 | 2020-02-06 16:24:03 |
| R49.htm | 36313 | 2020-02-06 16:24:03 |
| R5.htm | 45204 | 2020-02-06 16:24:03 |
| R50.htm | 76764 | 2020-02-06 16:24:03 |
| R51.htm | 448317 | 2020-02-06 16:24:03 |
| R52.htm | 27513 | 2020-02-06 16:24:03 |
| R53.htm | 133728 | 2020-02-06 16:24:03 |
| R54.htm | 110092 | 2020-02-06 16:24:03 |
| R55.htm | 124072 | 2020-02-06 16:24:03 |
| R56.htm | 68490 | 2020-02-06 16:24:03 |
| R57.htm | 117486 | 2020-02-06 16:24:03 |
| R58.htm | 154438 | 2020-02-06 16:24:03 |
| R59.htm | 115527 | 2020-02-06 16:24:03 |
| R6.htm | 96585 | 2020-02-06 16:24:03 |
| R60.htm | 41302 | 2020-02-06 16:24:03 |
| R61.htm | 21064 | 2020-02-06 16:24:03 |
| R62.htm | 151403 | 2020-02-06 16:24:03 |
| R63.htm | 33923 | 2020-02-06 16:24:03 |
| R64.htm | 24806 | 2020-02-06 16:24:03 |
| R65.htm | 1106878 | 2020-02-06 16:24:03 |
| R66.htm | 4176 | 2020-02-06 16:24:03 |
| R67.htm | 3946 | 2020-02-06 16:24:03 |
| R68.htm | 13221 | 2020-02-06 16:24:03 |
| R69.htm | 7498 | 2020-02-06 16:24:03 |
| R7.htm | 95971 | 2020-02-06 16:24:03 |
| R70.htm | 3916 | 2020-02-06 16:24:03 |
| R71.htm | 4695 | 2020-02-06 16:24:03 |
| R72.htm | 4151 | 2020-02-06 16:24:03 |
| R73.htm | 26399 | 2020-02-06 16:24:03 |
| R74.htm | 16260 | 2020-02-06 16:24:03 |
| R75.htm | 7631 | 2020-02-06 16:24:03 |
| R76.htm | 26158 | 2020-02-06 16:24:03 |
| R77.htm | 22758 | 2020-02-06 16:24:03 |
| R78.htm | 58575 | 2020-02-06 16:24:03 |
| R79.htm | 6138 | 2020-02-06 16:24:03 |
| R8.htm | 9055 | 2020-02-06 16:24:03 |
| R80.htm | 4320 | 2020-02-06 16:24:03 |
| R81.htm | 10416 | 2020-02-06 16:24:03 |
| R82.htm | 13637 | 2020-02-06 16:24:03 |
| R83.htm | 12420 | 2020-02-06 16:24:03 |
| R84.htm | 53755 | 2020-02-06 16:24:03 |
| R85.htm | 16657 | 2020-02-06 16:24:03 |
| R86.htm | 12617 | 2020-02-06 16:24:03 |
| R87.htm | 25039 | 2020-02-06 16:24:03 |
| R88.htm | 9165 | 2020-02-06 16:24:03 |
| R89.htm | 24952 | 2020-02-06 16:24:03 |
| R9.htm | 76449 | 2020-02-06 16:24:03 |
| R90.htm | 20896 | 2020-02-06 16:24:03 |
| R91.htm | 12816 | 2020-02-06 16:24:03 |
| R92.htm | 6858 | 2020-02-06 16:24:03 |
| R93.htm | 24904 | 2020-02-06 16:24:03 |
| R94.htm | 63183 | 2020-02-06 16:24:03 |
| R95.htm | 12795 | 2020-02-06 16:24:03 |
| R96.htm | 13360 | 2020-02-06 16:24:03 |
| R97.htm | 35834 | 2020-02-06 16:24:03 |
| R98.htm | 21068 | 2020-02-06 16:24:03 |
| R99.htm | 15443 | 2020-02-06 16:24:03 |
| report.css | 2768 | 2020-02-06 16:24:03 |
| Show.js | 1086 | 2020-02-06 16:24:03 |
 stockperformancegraph2019.jpg | 64880 | 2020-02-06 16:24:03 |