Leases (Future Minimum Annual Lease Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Leases, Operating [Abstract]
Capital Leases Payable, 2013	$ 3,308
Total minimum capital lease payments	3,308
Less: Amount representing interest	(44)
Present value of capitalized lease obligations	3,264
Operating Leases Payable, 2013	15,823
Operating Leases Payable, 2014	11,977
Operating Leases Payable, 2015	7,566
Operating Leases Payable, 2016	5,707
Operating Leases Payable, 2017	4,801
Operating Leases Payable, Thereafter	19,136
Total minimum operating lease payments	65,010
Total Leases Payable, 2013	19,131
Total Leases Payable, 2014	11,977
Total Leases Payable, 2015	7,566
Total Leases Payable, 2016	5,707
Total Leases Payable, 2017	4,801
Total Leases Payable, Thereafter	19,136
Total minimum lease payments	$ 68,318