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Income Taxes - Provision for Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Current income taxes:      
Federal $ (185) $ (91) $ (103)
State 264 (73) 100
Foreign 2,594 1,374 1,523
Total current income taxes 2,673 1,210 1,520
Deferred income taxes:      
Federal (17) 155 (992)
State 42 76 75
Foreign (64) (11) 1,199
Total deferred income taxes (39) 220 282
Total income tax provision $ 2,634 $ 1,430 $ 1,802