Income Taxes (Reconciliation Of Total Gross Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Tax Credit Carryforward, Amount	$ 2,000	$ 2,000
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning January 1	2,937	1,978	$ 1,612
Additions for tax positions of prior years	(102)	521	149
Additions based on tax positions related to current year	483	69	820
Acquired uncertain tax position		1,326	0
Settlements	0	(544)	0
Lapse of statute of limitations	(328)	(612)	562
Currency movement	10	(199)	(41)
Balance ending December 31	$ 3,000	$ 2,937	$ 1,978