Goodwill and Other Intangibles (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Change in goodwill

	2018		2017
Goodwill, balance at January 1,	$	789,058	$	785,399
Change in goodwill	18,202		3,659
Goodwill, balance at December 31,	$	807,260	$	789,058

Amortizable intangibles

	Cost of Amortizable Intangibles				Accumulated Amortization (Expense) Benefit						Net Amortizable Intangibles
	December 31, 2018		December 31, 2017		December 31, 2018			December 31, 2017			December 31, 2018		December 31, 2017
Amortizable intangible assets:
Favorable leases	$	18,930	$	22,500	$	(12,564	)	$	(14,495	)	$	6,366	$	8,005
Non-compete agreements	2,757		1,851		(679		)	(464		)	2,078		1,387
Total amortizable intangible assets	$	21,687	$	24,351	$	(13,243	)	$	(14,959	)	$	8,444	$	9,392
Unfavorable leases	$	10,180	$	14,470	$	8,486		$	11,853		$	1,694	$	2,617

Estimated net amortization of intangibles

	December 31, 2018
	Amortization Expense			Amortization Benefit		Total Amortization Expense
2019	$	(1,483	)	$	713	$	(770	)
2020	(1,306		)	541		(765		)
2021	(1,078		)	389		(689		)
2022	(961		)	51		(910		)
2023	(787		)	—		(787		)
Total	$	(5,615	)	$	1,694	$	(3,921	)