Restructuring and Severance (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and severance	$ 1,879	$ 0	$ 4,270	$ 0
Unpaid severance and related charges	$ 3,600		3,600
Severance costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and severance			3,900
Other exit costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and severance			$ 400