Commitments and Contingencies (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 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	985	1,607
Utilization of accrual	(1,489)	(1,593)
Warranty liability balance, end of the period	2,049	$ 2,614
Product Warranty Accrual, Current	1,600		$ 2,000
Product Warranty Accrual, Noncurrent	$ 400		$ 500
Minimum [Member]
Product Warranty Liability [Line Items]
Warranty, Term	12 months
Maximum [Member]
Product Warranty Liability [Line Items]
Warranty, Term	24 months