Income Taxes (Income Before Income Taxes and Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income before income taxes
Domestic	$ 25,331	$ 30,670	$ 34,301
Foreign	9,062	4,291	4,747
Total	34,393	34,961	39,048
Current income tax provision:
Federal	3,669	775	12,139
State	1,026	460	1,306
Foreign	1,372	1,396	1,366
Total current	6,067	2,631	14,811
Deferred income tax provision (benefit):
Federal	297	4,813	3,868
State	1,771	296	(17)
Foreign	1,180	76	256
Total deferred	3,248	5,185	4,107
Income tax provision	$ 9,315	$ 7,816	$ 18,918