Intangibles (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets other than Goodwill

Intangible assets other than goodwill were comprised of the following:

	December 31,
	2017			2016
Noncompetition and other agreements	$	429,140		$	407,220
Lease agreements	7,623			7,244
Indefinite-lived assets	33,255			1,125
Other	583			583
	470,601			416,172
Less accumulated amortization	(356,774		)	(342,668		)
	$	113,827		$	73,504

Scheduled Amortization Charges from Intangible Assets and Liabilities

Scheduled amortization charges from amortizable intangible assets and liabilities as of December 31, 2017 were as follows: 

	Noncompetition and other agreements		Lease liabilities			Other
2018	$	15,581	$	(849	)	$	102
2019	14,051		(658		)	87
2020	12,629		(628		)	44
2021	9,929		(602		)	—
2022	6,808		(553		)	—
Thereafter	21,341		(2,157		)	—
Total	$	80,339	$	(5,447	)	$	233