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Business Segments and Geographic Information - Operating and Reporting Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Operating Income: |  |  |  |
Operating income | $ 62,902 | $ 72,451 | $ 181,827 | $ 197,575
Operating Segments |  |  |  |
Revenues: |  |  |  |
Revenues | 566,759 | 554,376 | 1,694,443 | 1,612,911
Operating Income: |  |  |  |
Operating income | 111,976 | 109,934 | 325,693 | 306,023
Operating Segments | U.S. Corrections & Detention |  |  |  |
Revenues: |  |  |  |
Revenues | 365,071 | 344,452 | 1,073,840 | 1,024,395
Operating Income: |  |  |  |
Operating income | 77,551 | 77,865 | 224,838 | 220,292
Operating Segments | GEO Care |  |  |  |
Revenues: |  |  |  |
Revenues | 134,610 | 99,779 | 377,740 | 289,722
Operating Income: |  |  |  |
Operating income | 31,293 | 30,007 | 94,062 | 80,558
Operating Segments | International Services |  |  |  |
Revenues: |  |  |  |
Revenues | 45,641 | 40,416 | 130,261 | 116,468
Operating Income: |  |  |  |
Operating income | 3,410 | 1,866 | 8,413 | 4,702
Operating Segments | Facility Construction & Design |  |  |  |
Revenues: |  |  |  |
Revenues | 21,437 | 69,729 | 112,602 | 182,326
Operating Income: |  |  |  |
Operating income | $ (278) | $ 196 | $ (1,620) | $ 471

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