Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss By Component) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated other comprehensive income loss [Line Items]
Accumulated other comprehensive loss, net of tax, beginning balance	$ (16,651)	$ (16,759)	$ (11,124)
Other comprehensive gain (loss) before reclassifications	(859)	1,226	(4,393)
Amounts reclassified from accumulated other comprehensive loss	352	(1,118)	(1,242)
Other comprehensive income (loss)	(507)	108	(5,635)
Accumulated other comprehensive loss, net of tax, ending balance	(17,158)	(16,651)	(16,759)
Foreign currency translation adjustments [Member]
Accumulated other comprehensive income loss [Line Items]
Accumulated other comprehensive loss, net of tax, beginning balance	(8,375)	(12,425)	(11,840)
Other comprehensive gain (loss) before reclassifications	(4,354)	4,050	(585)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Other comprehensive income (loss)	(4,354)	4,050	(585)
Accumulated other comprehensive loss, net of tax, ending balance	(12,729)	(8,375)	(12,425)
Derivative instruments, net of tax [Member]
Accumulated other comprehensive income loss [Line Items]
Accumulated other comprehensive loss, net of tax, beginning balance	(6,742)	(3,600)	116
Other comprehensive gain (loss) before reclassifications	3,018	(2,024)	(2,474)
Amounts reclassified from accumulated other comprehensive loss	352	(1,118)	(1,242)
Other comprehensive income (loss)	3,370	(3,142)	(3,716)
Accumulated other comprehensive loss, net of tax, ending balance	(3,372)	(6,742)	(3,600)
Other, net of tax [Member]
Accumulated other comprehensive income loss [Line Items]
Accumulated other comprehensive loss, net of tax, beginning balance	(1,534)	(734)	600
Other comprehensive gain (loss) before reclassifications	477	(800)	(1,334)
Amounts reclassified from accumulated other comprehensive loss	0	0	0
Other comprehensive income (loss)	477	(800)	(1,334)
Accumulated other comprehensive loss, net of tax, ending balance	$ (1,057)	$ (1,534)	$ (734)