Restructuring and Other Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Reserve [Roll Forward]
Charges	$ 3,478	$ 566	$ 3,767	$ 613
Employee severance and related costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			2,202	2,031
Cash payments			1,487	1,455
Charges			1,353	0
Non-cash			0	0
Adjustments			(300)	(30)
Restructuring Reserve, Ending	1,768	546	1,768	546
Real estate exit and related costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			2,935	2,600
Cash payments			1,812	1,060
Charges			2,301	599
Non-cash			0	0
Adjustments			300	30
Restructuring Reserve, Ending	3,724	2,169	3,724	2,169
Asset write-offs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			0	0
Cash payments			0	0
Charges			113	14
Non-cash			113	14
Adjustments			0	0
Restructuring Reserve, Ending	0	0	0	0
Accrued restructuring liability
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			5,137	4,631
Cash payments			3,299	2,515
Charges			3,767	613
Non-cash			113	14
Adjustments			0
Restructuring Reserve, Ending	5,492	$ 2,715	5,492	$ 2,715
Accrued restructuring liability | Other Current Liabilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			4,100
Restructuring Reserve, Ending	4,200		4,200
Accrued restructuring liability | Other Noncurrent Liabilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			1,000
Restructuring Reserve, Ending	$ 1,300		$ 1,300