GOODWILL AND INTANGIBLE ASSETS (Tables)

9 Months Ended

Sep. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Activity and Balances Related to Goodwill by Operating Segment

A summary of the activity and balances related to goodwill by operating segment follows:



	December 31, 2017		Acquisitions		September 30, 2018
Eastern region (1)	$	19,192	$	5,601	$	24,793
Western region	89,369		22,823		112,192
Recycling	12,315		—		12,315
Other	1,729		—		1,729
Total	$	122,605	$	28,424	$	151,029


(1)	The acquisitions amount includes a $1,230 goodwill adjustment for the tax treatment associated with the Complete acquisition. See Note 13, Income Taxes for additional disclosure.

Summary of Intangible Assets by Intangible Asset Type

A summary of intangible assets by intangible asset type follows:



	Covenants Not-to-Compete			Client Lists			Total
Balance, September 30, 2018
Intangible assets	$	19,192		$	37,287		$	56,479
Less accumulated amortization	(17,371		)	(12,507		)	(29,878		)
	$	1,821		$	24,780		$	26,601



	Covenants Not-to-Compete			Client Lists			Total
Balance, December 31, 2017
Intangible assets	$	18,092		$	18,087		$	36,179
Less accumulated amortization	(16,851		)	(11,179		)	(28,030		)
	$	1,241		$	6,908		$	8,149

Summary of Intangible Amortization Expense Estimated

A summary of intangible amortization expense estimated for the five fiscal years following the fiscal year ended December 31, 2017 and thereafter follows:



Estimated Future Amortization Expense as of September 30, 2018
Fiscal year ending December 31, 2018	$	1,280
Fiscal year ending December 31, 2019	$	4,492
Fiscal year ending December 31, 2020	$	3,849
Fiscal year ending December 31, 2021	$	2,875
Fiscal year ending December 31, 2022	$	2,366
Thereafter	$	11,739