Income Taxes (Reconciliation of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax at statutory rate	$ 5,441	$ 3,845	$ 5,553
State income taxes, net of U.S. federal tax benefit	(391)	(176)	(21)
U.S. GILTI tax, net of foreign tax credits	77	0	0
Effect of foreign operations	2,096	729	(109)
Change in valuation allowance	(1,204)	2,448	(646)
Change in unrecognized tax benefits, net	107	(32)	650
Impairment of goodwill	237	507	0
Specialty tax credits	(333)	(249)	(176)
Statutory rate changes	(282)	(119)	(249)
Effect of foreign exchange	(35)	(346)	(1,152)
Loss of benefit of U.S. net operating loss	0	1,064	967
Excess tax benefits related to share based compensation	0	(168)	(357)
Other	(244)	6	(315)
Total income tax expense	$ 5,469	$ 7,509	$ 4,145