Restructuring and Severance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and severance	$ 2,391	$ 0	$ 2,391	$ 0
Unpaid severance and related charges	2,100		$ 2,100
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and severance	2,000
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and severance	$ 400