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Income Taxes (Schedule Of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Tax expense (benefit) at statutory rate	$ (3,114)	$ (3,606)	$ 345
Valuation allowance change	1,566	3,952	153
Foreign income taxes	1,138	378	425
Nondeductible executive compensation	1,075	580	778
Net change in uncertain tax positions	762	(1,115)	(360)
Foreign interest disallowance	307	298	292
State income taxes, net of federal benefit	73	(455)	(108)
Nondeductible entertainment expenses	65	94	201
Foreign deferred items	53	(63)	365
Equity compensation	(477)	(204)	(1,921)
Research and development credit	(959)	(457)	(400)
Other	(482)	106	154
Total income tax expense (benefit)	$ 7	$ (492)	$ (76)

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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