Income Taxes (Schedule Of Federal Statutory Income Tax Rate To Income Before Income Tax) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Tax at statutory rate	$ 9,536	$ 3,632	$ 5,727
State taxes, net of federal tax effect	(36)	(788)	(1,705)
Effect of foreign operations and tax incentives	(4,048)	(6,372)	(5,870)
Change in valuation allowance	(336)	(3,029)	(2,283)
Stock-based compensation	69	347	118
Foreign tax refund benefit	(7,285)	0	0
GILTI	2,104	1,667	955
Losses in foreign jurisdictions for which no benefit has been provided	2,608	5,798	4,379
Change in uncertain tax benefits reserve	(8,858)	(31)	200
Other	1,695	2,014	2,323
Total income tax expense	$ 9,637	$ 3,238	$ 3,844