Balance Sheet Detail Product Warranty Rollforward (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]
Product Warranty Balance Beginning	$ 1,501	$ 1,142
Liabilities Accrued For Warranties Issued	1,896	1,789
Warranty Claims Paid And Utilized	(2,155)	(2,001)
Changes In Accrued Warranties	344	571
Product Warranty Balance Ending	$ 1,586	$ 1,501