Property, Plant And Equipment, Net (Schedule Of Property, Plant And Equipment, Net) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Property, Plant And Equipment, Net [Abstract]
Land	$ 1,882	$ 1,882
Buildings	28,186	27,930
Machinery and equipment	66,237	52,032
Office equipment, furniture and fixtures	6,908	5,752
Computer software and hardware	48,198	46,065
Leasehold improvements	27,203	12,137
Construction in progress	8,032	2,905
Property, plant and equipment, gross	186,646	148,703
Accumulated depreciation and amortization	(88,856)	(76,723)
Property, plant and equipment, net	$ 97,790	$ 71,980