Commitments and Contingencies (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liability balance, beginning of the period	$ 2,553	$ 2,600
Product warranty accruals	754	1,120
Utilization of accrual	(1,146)	(1,140)
Warranty liability balance, end of the period	2,161	$ 2,580
Product Warranty Accrual, Current	1,700		$ 2,000
Product Warranty Accrual, Noncurrent	$ 500		$ 500
Minimum [Member]
Product Warranty Liability [Line Items]
Warranty, Term	12 months
Maximum [Member]
Product Warranty Liability [Line Items]
Warranty, Term	24 months