Intangible Assets and Goodwill (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

Intangible assets consist of the following at December 31: 

	2019			2018
Noncompete agreements	$	25,030		$	24,370
Other intangible assets	3,209			3,130
	28,239			27,500
Less accumulated amortization	(25,087		)	(24,206		)
Net intangible assets subject to amortization	3,152			3,294
Indefinite‑lived trademarks and trade name	21,334			21,334
	$	24,486		$	24,628

Schedule of estimated annual amortization expense

The estimated annual amortization expense related to amortizable intangible assets is as follows for the years ending December 31:

2020	$	818
2021	767
2022	618
2023	361
2024	172
Thereafter	416
	$	3,152

Schedule of changes in value of goodwill

Changes in the value of goodwill: 

Balance as of January 1, 2018	$	573,145
Divestitures	(1,806		)
Balance as of December 31, 2018	$	571,339
Acquisitions	9,108
Divestitures	(4,365		)
Classification to held for sale (Note 9)	(37,473		)
Balance as of December 31, 2019	$	538,609