Product Warranty and Indemnification (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning balance	$ 1,126	$ 861	$ 1,002
Cost of warranty claims	(150)	790	(128)
Accruals for product warranties	30	(524)	(13)
Foreign currency translation adjustment	0	(1)	0
Balance at end of period	$ 1,006	$ 1,126	$ 861
Minimum [Member]
Standard Product Warranty Period [Line Items]
Standard product warranty period	90 days
Maximum [Member]
Standard Product Warranty Period [Line Items]
Standard product warranty period	3 years