Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss By Component) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 749,944	$ 842,381	$ 430,723
Other comprehensive income (loss)	9,384	(19,510)	(29,951)
Amounts reclassified from accumulated other comprehensive income (loss)	188	3,394	721
Ending balance	426,753	749,944	842,381
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(53,822)	(37,706)	(8,476)
Ending balance	(44,250)	(53,822)	(37,706)
Foreign currency translation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(54,194)	(35,464)	(4,831)
Other comprehensive income (loss)	9,630	(18,730)	(30,633)
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0
Ending balance	(44,564)	(54,194)	(35,464)
Defined benefit pension plan
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	700	(2,242)	(2,924)
Other comprehensive income (loss)	(354)	2,777	682
Amounts reclassified from accumulated other comprehensive income (loss)	(32)	165	0
Ending balance	314	700	(2,242)
Derivative financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	0	0	(721)
Other comprehensive income (loss)	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	721
Ending balance	0	0	0
Unrealized loss on short-term investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(328)	0	0
Other comprehensive income (loss)	108
Amounts reclassified from accumulated other comprehensive income (loss)	220	3,229	0
Ending balance	$ 0	$ (328)	$ 0