Income Taxes (Reconciliation Of Total Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Tax Credit Carryforward, Amount	$ 2,000	$ 2,400
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning January 1	593	3,014	$ 3,000
Additions for tax positions of prior years	0	(460)	(7)
Additions based on tax positions related to current year	(37)	(340)	(65)
Acquired uncertain tax position balance	0	(512)	(1,221)
Settlements	0	(1,103)	(338)
Lapse of statute of limitations	0	(6)	(978)
Currency movement	0	0	181
Balance ending December 31	$ 630	$ 593	$ 3,014