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Income Taxes - Schedule of Income Tax Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Current                      
Federal                 $ 1,988 $ 2,403 $ (6,475)
State                 198 395 281
Foreign                 905 1,391 454
Total                 3,091 4,189 (5,740)
Deferred                      
Federal                 24 (123) (238)
State                 (64) 23 51
Foreign                 75 (97) (18)
Total                 35 (197) (205)
Total                      
Federal                 2,012 2,280 (6,713)
State                 134 418 332
Foreign                 980 1,294 436
Total income tax expense $ 466 $ 680 $ 771 $ 1,209 $ 542 $ 748 $ 1,548 $ 1,154 $ 3,126 $ 3,992 $ (5,945)