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Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current:                      
Federal                 $ (7,670) $ (21,859) $ (8,025)
State                 356 (3,938) 460
Foreign                 11,132 9,550 5,099
Current Income tax expense (benefit)                 3,818 (16,247) (2,466)
Deferred:                      
Federal                 23,991 27,289 (22,054)
State                 319 702 4,701
Foreign                 (4,252) 2,719 (2,806)
Provision for (reversal of) valuation allowance on deferred tax assets                 (23,347) (29,979) 15,639
Deferred income tax expense (benefit)                 (3,289) 731 (4,520)
Total $ (4,012) $ 845 $ 1,348 $ 2,348 $ (51) $ (20,418) $ 2,828 $ 2,125 $ 529 $ (15,516) $ (6,986)