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Divestitures - Operating Results (Details) - Eeva Business - Discontinued Operations, Disposed of by Sale - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2018
Gain on sale of discontinued operations    
Gain on sale of discontinued operations $ 1 $ 7,502
Income from discontinued operations, before taxes    
Provision for income taxes   (1,777)
Net income from discontinued operations, net of taxes $ 1 $ 5,725