Property and Equipment Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended								12 Months Ended
	Jun. 30, 2008 USD ($) renewal_option	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2000 USD ($)	Oct. 31, 1999 USD ($)
Property, Plant and Equipment [Abstract]
Capital Leases, Future Minimum Payments Due	$ 48,900
Number of renewals permitted under building lease | renewal_option	2
Lessee Leasing Arrangements, Operating Leases, Renewal Term	5 years
Capital Lease Obligations Recorded	$ 27,600												$ 12,000	$ 15,200
Increase in lease financing obligations	$ 12,500
Loss on write down of property, equipment and other		$ 0	$ 0	$ 0	$ 0	$ 0	$ 4,409	$ 0	$ 0	$ 0	$ 4,409	$ 0
Up-front lease termination charges				10,000
Decrease in building related financing obligations				15,300
Loss on contract termination		0	0	3,337	0	0	0	0	0	3,337	0	0
Capital Leases, Income Statement, Amortization Expense										1,100	1,900	2,000
Net Book value of Buildings leased		0				7,700				0	7,700
Lease expense for land under operating lease										617	741	741
Repayment of Other Debt, Building Leases										11,300	2,200	2,000
Interest Expense, Other		$ (2)	$ (5)	$ (128)	$ (252)	$ (261)	$ (271)	(280)	$ (288)	$ (387)	$ (1,100)	$ (1,235)
Impairment of long-lived assets held-for-use included in discontinued operations								$ 687