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Income Taxes (Schedule of Components of Pre-Tax Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Income Tax Disclosure [Abstract]      
United States $ 2,458 $ (9,242) $ 3,087
Foreign 848 972 885
Income (loss) before provision (benefit) for income taxes $ 3,306 $ (8,270) [1] $ 3,972 [1]
[1] As adjusted for the adoption of ASC 606 using the full retrospective method.