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Business Segments and Geographic Information (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Operating Income: |  |
Operating income | $ 59,167 | $ 52,672
Operating Segments |  |
Revenues: |  |
Revenues | 510,185 | 427,369
Operating Income: |  |
Operating income | 93,228 | 84,520
Operating Segments | U.S. Corrections & Detention |  |
Revenues: |  |
Revenues | 338,370 | 285,609
Operating Income: |  |
Operating income | 66,919 | 63,597
Operating Segments | GEO Care |  |
Revenues: |  |
Revenues | 93,414 | 79,356
Operating Income: |  |
Operating income | 23,971 | 18,506
Operating Segments | International Services |  |
Revenues: |  |
Revenues | 37,555 | 40,654
Operating Income: |  |
Operating income | 1,762 | 1,815
Operating Segments | Facility Construction & Design |  |
Revenues: |  |
Revenues | 40,846 | 21,750
Operating Income: |  |
Operating income | $ 576 | $ 602

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