Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Tax benefit at statutory rate	$ (3,147)	$ (3,114)	$ (3,606)
Increase (reduction) in income taxes resulting from:
Valuation allowance change	4,779	1,566	3,952
Nondeductible executive compensation	878	1,075	580
Net change in uncertain tax positions	527	762	(1,115)
State income taxes, net of federal benefit	484	73	(455)
Equity compensation	472	(477)	(204)
Foreign income taxes	415	1,138	378
Provision to return adjustments	336	63	531
Foreign interest disallowance	151	307	298
Nondeductible entertainment expenses	117	65	94
Foreign deferred items	(112)	53	(63)
Research and development credit	(961)	(959)	(457)
Other	269	(545)	(425)
Income tax expense (benefit)	$ 4,208	$ 7	$ (492)