Restructuring Charges - Summary of Restructuring Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Provision for restructuring charges	$ 0	$ 4,327	$ 0
Severance and related costs
Restructuring Reserve [Roll Forward]
Beginning balance	0	0
Provision for restructuring charges	0	1,583
Cash payments and other adjustments	0	(1,583)
Ending balance	0	0	0
Facilities
Restructuring Reserve [Roll Forward]
Beginning balance	765	0
Provision for restructuring charges	0	1,124
Cash payments and other adjustments	(548)	(359)
Ending balance	217	765	0
Total
Restructuring Reserve [Roll Forward]
Beginning balance	765	0
Provision for restructuring charges	0	2,707
Cash payments and other adjustments	(548)	(1,942)
Ending balance	$ 200	$ 765	$ 0