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Segment Reporting - Summary Financial Information by Reporting Segment (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 174,207 us-gaap_Revenues | $ 182,825 us-gaap_Revenues | $ 186,172 us-gaap_Revenues | $ 198,154 us-gaap_Revenues | $ 199,373 us-gaap_Revenues | $ 199,079 us-gaap_Revenues | $ 212,574 us-gaap_Revenues | $ 228,655 us-gaap_Revenues | $ 741,358 us-gaap_Revenues | $ 839,681 us-gaap_Revenues | $ 1,019,903 us-gaap_Revenues
Operating (loss) income | (7,784)us-gaap_OperatingIncomeLoss | (31,732)us-gaap_OperatingIncomeLoss | (11,251)us-gaap_OperatingIncomeLoss | (21,949)us-gaap_OperatingIncomeLoss | (14,429)us-gaap_OperatingIncomeLoss | (30,563)us-gaap_OperatingIncomeLoss | (30,279)us-gaap_OperatingIncomeLoss | (5,570)us-gaap_OperatingIncomeLoss | (72,716)us-gaap_OperatingIncomeLoss | (80,841)us-gaap_OperatingIncomeLoss | (69,690)us-gaap_OperatingIncomeLoss
Depreciation and amortization |  |  |  |  |  |  |  |  | 36,019 us-gaap_DepreciationAndAmortization | 45,155 us-gaap_DepreciationAndAmortization | 48,352 us-gaap_DepreciationAndAmortization
Capital Expenditures |  |  |  |  |  |  |  |  | 13,156 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 19,636 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 37,944 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Total Assets | 573,534 us-gaap_Assets |  |  |  | 805,045 us-gaap_Assets |  |  |  | 573,534 us-gaap_Assets | 805,045 us-gaap_Assets |
CTU [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 336,573 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 346,086 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 360,369 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember
Operating (loss) income |  |  |  |  |  |  |  |  | 69,492 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 65,078 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 56,155 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,627 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 2,828 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 3,321 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember
Capital Expenditures |  |  |  |  |  |  |  |  | 628 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 158 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 1,401 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember
Total Assets | 73,458 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember |  |  |  | 75,275 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember |  |  |  | 73,458 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember | 75,275 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CtuMember |
AIU [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 198,896 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 231,606 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 304,208 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember
Operating (loss) income |  |  |  |  |  |  |  |  | (9,412)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | (5,556)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 20,896 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,329 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 3,069 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 4,249 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember
Capital Expenditures |  |  |  |  |  |  |  |  | 916 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 122 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 1,746 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember
Total Assets | 51,755 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember |  |  |  | 54,426 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember |  |  |  | 51,755 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember | 54,426 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_AiuMember |
University Group [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 535,469 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 577,692 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 664,577 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember
Operating (loss) income |  |  |  |  |  |  |  |  | 60,080 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 59,522 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 77,051 us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,956 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 5,897 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 7,570 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember
Capital Expenditures |  |  |  |  |  |  |  |  | 1,544 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 280 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 3,147 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember
Total Assets | 125,213 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember |  |  |  | 129,701 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember |  |  |  | 125,213 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember | 129,701 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_UniversityGroupMember |
Career Colleges [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 172,833 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 196,990 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 243,186 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember
Operating (loss) income |  |  |  |  |  |  |  |  | (73,753)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | (68,652)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | (84,663)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 9,227 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 10,963 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 11,468 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember
Capital Expenditures |  |  |  |  |  |  |  |  | 4,620 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 5,905 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 4,431 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember
Total Assets | 29,365 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember |  |  |  | 53,791 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember |  |  |  | 29,365 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember | 53,791 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_CareerCollegesMember |
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 230 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  | 55 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Operating (loss) income |  |  |  |  |  |  |  |  | (21,169)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (33,600)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | (7,699)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 17,455 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 22,574 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 22,639 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Capital Expenditures |  |  |  |  |  |  |  |  | 4,545 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 6,272 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 16,481 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember
Total Assets | 332,672 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |  |  | 491,821 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |  |  |  | 332,672 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember | 491,821 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateAndOtherMember |
Subtotal [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 708,532 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 774,682 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 907,818 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember
Operating (loss) income |  |  |  |  |  |  |  |  | (34,842)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | (42,730)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | (15,311)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 31,638 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 39,434 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 41,677 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember
Capital Expenditures |  |  |  |  |  |  |  |  | 10,709 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 12,457 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 24,059 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember
Total Assets | 487,250 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember |  |  |  | 675,313 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember |  |  |  | 487,250 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember | 675,313 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_BusinessSegmentExcludingTransitionalGroupMember |
Transitional Group [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 32,826 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 64,999 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 112,085 us-gaap_Revenues / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember
Operating (loss) income |  |  |  |  |  |  |  |  | (37,874)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | (38,111)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | (54,379)us-gaap_OperatingIncomeLoss / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember
Depreciation and amortization |  |  |  |  |  |  |  |  | 4,381 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 5,721 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 6,675 us-gaap_DepreciationAndAmortization / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember
Capital Expenditures |  |  |  |  |  |  |  |  | 155 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 346 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 2,412 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember
Total Assets | 7,990 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember |  |  |  | 13,805 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember |  |  |  | 7,990 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember | 13,805 us-gaap_Assets / us-gaap_StatementBusinessSegmentsAxis = ceco_TransitionalGroupMember |
Discontinued Operation [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Capital Expenditures |  |  |  |  |  |  |  |  | 2,292 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 6,833 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | 11,473 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember
Total Assets | $ 78,294 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |  |  | $ 115,927 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |  |  |  | $ 78,294 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember | $ 115,927 us-gaap_Assets / us-gaap_StatementOperatingActivitiesSegmentAxis = us-gaap_SegmentDiscontinuedOperationsMember |

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