Operating Leases Future Minimum Payments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, Future Minimum Payments Due, Current	$ 10,086
Operating Leases, Future Minimum Payments, Due in Two Years	10,163
Operating Leases, Future Minimum Payments, Due in Three Years	10,486
Operating Leases, Future Minimum Payments, Due in Four Years	10,485
Operating Leases, Future Minimum Payments, Due in Five Years	9,840
Operating Leases, Future Minimum Payments, Due Thereafter	45,606
Operating Leases, Future Minimum Payments Due	96,666
Future Minimum Sublease Rentals, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]
Future Minimum Sublease Rentals, Sale Leaseback Transactions, within One Year	(304)
Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Two Years	(128)
Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Three Years	0
Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Four Years	0
Future Minimum Sublease Rentals, Sale Leaseback Transactions, within Five Years	0
Future Minimum Sublease Rentals, Sale Leaseback Transactions, Thereafter	0
Future Minimum Sublease Rentals, Sale Leaseback Transactions	432
Future Minimum Lease Payments Net [Abstract]
Operating Leases Future Minimum Payments Due Current Net	9,782
Operating Leases Future Minimum Payments Due In Two Years Net	10,035
Operating Leases Future Minimum Payments Due In Three Years Net	10,486
Operating Leases Future Minimum Payments Due In Four Years Net	10,485
Operating Leases Future Minimum Payments Due In Five Years Net	9,840
Operating Leases Future Minimum Payments Due Thereafter Net	45,606
Operating Leases Future Minimum Payments Due Total	$ 96,234