Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Change in goodwill

	2016		2015
Goodwill, balance at January 1,	$	757,142	$	756,384
Change in goodwill	28,257		758
Goodwill, balance at December 31,	$	785,399	$	757,142

Amortizable intangibles

	Cost of Amortizable Intangibles				Accumulated Amortization (Expense) Benefit						Net Amortizable Intangibles
	December 31, 2016		December 31, 2015		December 31, 2016			December 31, 2015			December 31, 2016		December 31, 2015
Amortizable intangible assets:
Favorable leases	$	27,960	$	32,070	$	(18,104	)	$	(19,991	)	$	9,856	$	12,079
Non-compete agreements	1,887		732		(414		)	(409		)	1,473		323
Total amortizable intangible assets	$	29,847	$	32,802	$	(18,518	)	$	(20,400	)	$	11,329	$	12,402
Unfavorable leases	$	19,950	$	28,580	$	15,840		$	22,415		$	4,110	$	6,165

Estimated net amortization of intangibles

	December 31, 2016
	Amortization Expense			Amortization Benefit		Total Amortization Expense
2017	$	(2,072	)	$	1,493	$	(579	)
2018	(1,599		)	923		(676		)
2019	(1,377		)	712		(665		)
2020	(1,197		)	541		(656		)
2021	(969		)	389		(580		)
Total	$	(7,214	)	$	4,058	$	(3,156	)