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Note 11 - Segment Information - Operating Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Operating income | $ 194,361 | $ 182,977 | $ 175,792 | $ 167,890 | $ 192,893 | $ 193,846 | $ 173,735 | $ 155,220 | $ 721,020 | $ 715,694 | $ 631,542
JBI [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 450,000 | 477,000 | 461,000
DCS [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 205,000 | 163,000 | 117,000
ICS [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | 36,000 | 36,000 | 30,000
JBT [Member] | Operating Segments [Member] |  |  |  |  |  |  |  |  |  |  |
Operating income |  |  |  |  |  |  |  |  | $ 30,000 | $ 40,000 | $ 24,000

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- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
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