Restructuring and Other Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Reserve [Roll Forward]
Charges	$ 240	$ 0	$ 289	$ 47
Employee severance and related costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			2,202	2,031
Cash payments			1,009	1,282
Charges			72	0
Non-cash				0
Restructuring Reserve, Ending	1,265	749	1,265	749
Real estate exit and related costs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			2,935	2,600
Cash payments			1,020	598
Charges			217	33
Non-cash				0
Restructuring Reserve, Ending	2,132	2,035	2,132	2,035
Asset write-offs
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning		0	0	0
Cash payments			0	0
Charges			0	14
Non-cash				14
Restructuring Reserve, Ending	0		0
Accrued restructuring liability
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			5,137	4,631
Cash payments			2,029	1,880
Charges			289	47
Non-cash				14
Restructuring Reserve, Ending	3,397	$ 2,784	3,397	$ 2,784
Accrued restructuring liability | Other Current Liabilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			4,100
Restructuring Reserve, Ending	2,700		2,700
Accrued restructuring liability | Other Noncurrent Liabilities [Member]
Restructuring Reserve [Roll Forward]
Restructuring Reserve, Beginning			1,000
Restructuring Reserve, Ending	700		700
Minimum [Member] | Real estate exit and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	300		300
Maximum [Member] | Real estate exit and related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost	$ 500		$ 500