Commitments and Contingencies Detail 1 (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Future Minimum Lease Payments Schedule [Abstract]
Future Minimum Payments Due, Current	$ 28,837
Future Minimum Payments, Due in Two Years	22,647
Future Minimum Payments, Due in Three Years	16,968
Future Minimum Payments, Due in Four Years	13,446
Future Minimum Payments, Due in Five Years	9,881
Future Minimum Payments, Due Thereafter	10,456
Future Minimum Payments Due	$ 102,235