Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2013
Restructuring Liabilities, Beginning balance		$ 3,479	$ 3,479
Restructuring Charges	700	300	919
Cash Payments, net of Receipts on Sublease Activity			(940)
Non-cash Items			0
Adjustments and Changes in Estimates			0
Restructuring Liabilities, Ending balance	3,458		3,458
One-Time Termination Benefits [Member]
Restructuring Liabilities, Beginning balance		711	711
Restructuring Charges			703
Cash Payments, net of Receipts on Sublease Activity			(330)
Non-cash Items			0
Adjustments and Changes in Estimates			0
Restructuring Liabilities, Ending balance	1,084		1,084
Facility Closing [Member]
Restructuring Liabilities, Beginning balance		2,501	2,501
Restructuring Charges			0
Cash Payments, net of Receipts on Sublease Activity			(450)
Non-cash Items			0
Adjustments and Changes in Estimates			0
Restructuring Liabilities, Ending balance	2,051		2,051
Other Restructuring [Member]
Restructuring Liabilities, Beginning balance		267	267
Restructuring Charges			216
Cash Payments, net of Receipts on Sublease Activity			(160)
Non-cash Items			0
Adjustments and Changes in Estimates			0
Restructuring Liabilities, Ending balance	$ 323		$ 323