Restructuring Reserves (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended	42 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010	Jun. 30, 2011	Jan. 28, 2010
Restructuring Reserve [Roll Forward]
Initial Reserve			$ 4,250,000				$ 19,478,000
Adjustments to Reserves			1,399,000
Cash Charges			(2,529,000)		(15,006,000)
Non - Cash Settlements			(399,000)		(376,000)
Impact of Changes in Exchange Rates			(13,000)		154,000
Reserve Balance	2,708,000		2,708,000		4,250,000		19,478,000
Restructuring charges	768,000	4,172,000	1,749,000	16,478,000	21,000,000
Number of positions eliminated					200
Restructuring charges that have been paid						17,500,000
Restructuring reserve included in accrued expenses and other current liabilities	1,600,000		1,600,000
Restructuring reserve included in accrued exit and disposal obligations	1,100,000		1,100,000
Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Initial Reserve			3,309,000				5,380,000
Adjustments to Reserves			159,000
Cash Charges			(527,000)		(1,760,000)
Non - Cash Settlements			(399,000)		(376,000)
Impact of Changes in Exchange Rates			6,000		65,000
Reserve Balance	2,548,000		2,548,000		3,309,000		5,380,000
Restructuring charges					6,900,000
Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Initial Reserve			941,000				14,098,000
Adjustments to Reserves			1,240,000
Cash Charges			(2,002,000)		(13,246,000)
Non - Cash Settlements			0		0
Impact of Changes in Exchange Rates			(19,000)		89,000
Reserve Balance	$ 160,000		$ 160,000		$ 941,000		$ 14,098,000