Workforce Reductions (Details) - Employee Severance [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,517	$ 2,336
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,180
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,337