Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Goodwill [Roll Forward]
Goodwill beginning balance			$ 67,818,000
Currency exchange			632,000
Goodwill ending balance	68,450,000		68,450,000
Intangible assets subject to amortization [Abstract]
Gross carrying amount	48,460,000		48,460,000		48,664,000
Accumulated amortization	(21,234,000)		(21,234,000)		(19,193,000)
Currency exchange	(7,548,000)		(7,548,000)		(7,760,000)
Net value	19,678,000		19,678,000		21,711,000
Intangible assets with indefinite lives [Abstract]
Gross carrying amount	3,162,000		3,162,000		3,162,000
Currency exchange	(653,000)		(653,000)		(676,000)
Total	2,509,000		2,509,000		2,486,000
Total Intangible assets, net	22,187,000		22,187,000		24,197,000
Amortization expense	$ 1,000,000	$ 1,000,000	$ 2,000,000	$ 2,000,000