Restructuring Charges (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Restructuring Liabilities, Beginning balance	$ 4,480
Restructuring Charges	1,327
Cash Payments, net of Receipts on Sublease Activity	(641)
Non-cash Items	0
Adjustments and Changes in Estimates	(326)
Restructuring Liabilities, Ending balance	4,840
One-Time Termination Benefits [Member]
Restructuring Liabilities, Beginning balance	753
Restructuring Charges	1,144
Cash Payments, net of Receipts on Sublease Activity	(314)
Non-cash Items	0
Adjustments and Changes in Estimates	0
Restructuring Liabilities, Ending balance	1,583
Facility Closing [Member]
Restructuring Liabilities, Beginning balance	3,727
Restructuring Charges	183
Cash Payments, net of Receipts on Sublease Activity	(327)
Non-cash Items	0
Adjustments and Changes in Estimates	(326)
Restructuring Liabilities, Ending balance	$ 3,257