Income Taxes (Details 3) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Net deferred tax liabilities comprised
Loss reserves and accruals	$ 53,747	$ 50,158
Interest rate swaps	11,671	10,745
Deferred Tax Assets, Goodwill and Intangible Assets	7,621	0
State net operating loss ("NOL") carryforwards	17,413	16,592
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	20,408	21,770
Deferred Tax Assets, Gross	110,860	99,265
Valuation allowance on state NOL	(46,547)	(40,486)
Deferred Tax Assets, Net of Valuation Allowance	64,313	58,779
Goodwill and intangible franchise rights	(143,509)	(138,992)
Depreciation expense	(53,619)	(43,070)
Deferred tax liabilities deferred gain on bond redemption	(1,535)	(2,046)
Other	(1,060)	(1,936)
Deferred Tax Liabilities, Gross	(199,723)	(186,044)
Deferred Tax Liabilities, Net	$ (135,410)	$ (127,265)