Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Change in goodwill

	2015		2014
Goodwill, balance at January 1,	$	756,384	$	756,225
Change in goodwill	758		159
Goodwill, balance at December 31,	$	757,142	$	756,384

Amortizable intangibles

	Cost of Amortizable Intangibles				Accumulated Amortization (Expense) Benefit						Net Amortizable Intangibles
	December 31, 2015		December 31, 2014		December 31, 2015			December 31, 2014			December 31, 2015		December 31, 2014
Amortizable intangible assets:
Favorable leases	$	32,070	$	49,780	$	(19,991	)	$	(35,145	)	$	12,079	$	14,635
Non-compete agreements	732		617		(409		)	(344		)	323		273
Total amortizable intangible assets	$	32,802	$	50,397	$	(20,400	)	$	(35,489	)	$	12,402	$	14,908
Unfavorable leases	$	28,580	$	49,200	$	22,415		$	40,263		$	6,165	$	8,937

Estimated net amortization of intangibles

	December 31, 2015
	Amortization Expense			Amortization Benefit		Total Amortization Expense
2016	$	(2,336	)	$	2,055	$	(281	)
2017	(1,920		)	1,493		(427		)
2018	(1,457		)	923		(534		)
2019	(1,235		)	712		(523		)
2020	(1,054		)	541		(513		)
Total	$	(8,002	)	$	5,724	$	(2,278	)