Property, Plant and Equipment - Additional Information (Details) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2014 EUR (€)	Mar. 01, 2015 Building purchase, final payment [Member] EUR (€)
Property, Plant and Equipment [Line Items]
Total purchase price of property	$ 5,444		€ 4,500
Building purchase down payment			450
Building purchase, final payment				4,050
Disposals in period	2,620	1,616
Buildings include rental property	5,750	5,750
Accumulated depreciation	$ 2,627	$ 2,480