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Schedule of Revenue and Net Operating Income for Each of the Three Segments and a Reconciliation to CoreCivic's Operating Income (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 449,929 | $ 436,393 | $ 890,845 | $ 882,077
Operating Expense | 320,539 | 307,897 | 639,690 | 623,200
Operating income | 61,712 | 65,279 | 120,417 | 134,318
General and administrative | (27,538) | (26,417) | (52,509) | (51,243)
Depreciation and amortization | (38,560) | (36,800) | (76,649) | (73,057)
Asset impairments | (1,580) |  | (1,580) | (259)
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 449,927 | 436,376 | 890,840 | 881,985
Operating Expense | 320,398 | 307,753 | 639,382 | 622,900
Operating income | 129,529 | 128,623 | 251,458 | 259,085
Operating Segments | Safety |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 413,208 | 408,781 | 817,706 | 827,464
Operating Expense | 298,469 | 292,791 | 594,972 | 593,500
Operating income | 114,739 | 115,990 | 222,734 | 233,964
Operating Segments | Community |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 24,718 | 17,579 | 49,518 | 34,633
Operating Expense | 18,757 | 11,979 | 38,124 | 23,994
Operating income | 5,961 | 5,600 | 11,394 | 10,639
Operating Segments | Properties |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 12,001 | 10,016 | 23,616 | 19,888
Operating Expense | 3,172 | 2,983 | 6,286 | 5,406
Operating income | 8,829 | 7,033 | 17,330 | 14,482
Segment Reconciling Items |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Other operating expense | (141) | (144) | (308) | (300)
General and administrative | (27,538) | (26,417) | (52,509) | (51,243)
Depreciation and amortization | (38,560) | (36,800) | (76,649) | (73,057)
Asset impairments | (1,580) |  | (1,580) | (259)
Segment Reconciling Items | Other Revenue |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 2 | $ 17 | $ 5 | $ 92

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