Property and Equipment Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended										12 Months Ended
	Jun. 30, 2008 USD ($) renewal_option	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Oct. 31, 2000 USD ($)	Dec. 30, 1999 USD ($)
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														$ 15,200	$ 12,000
Increase in lease financing obligations	$ 12,500
Loss on write down of property, equipment and other										$ 4,409		$ 0	$ 0	$ 4,409
Up-front lease termination charges								$ 10,000
Decrease in building related financing obligations								15,300
Loss on contract termination		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	3,337	$ 0			0	3,337	0
Capital Leases, Income Statement, Amortization Expense													1,100	1,900
Net Book value of Buildings leased						0							0
Lease expense for land under operating lease													617	741
Repayment of Other Debt, Building Leases													11,300	2,200
Interest Expense, Other		$ 0	$ 0	$ 0	$ 0	$ (2)	$ (5)	$ (128)	$ (252)			$ 0	$ (387)	$ (1,100)
Impairment of long-lived assets held-for-use included in discontinued operations											$ 687