GOODWILL AND INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

A summary of the activity and balances related to goodwill by reporting segment is as follows:



	December 31, 2017		Acquisitions		December 31, 2018
Eastern	$	19,192	$	8,962	$	28,154
Western	89,369		31,167		120,536
Recycling	12,315		—		12,315
Other	1,729		—		1,729
Total	$	122,605	$	40,129	$	162,734



	December 31, 2016		Acquisitions		December 31, 2017
Eastern	$	17,429	$	1,763	$	19,192
Western	88,426		943		89,369
Recycling	12,315		—		12,315
Other	1,729		—		1,729
Total	$	119,899	$	2,706	$	122,605

A summary of intangible assets is as follows:



	Covenants Not-to-Compete			Client Lists			Total
Balance, December 31, 2018
Intangible assets	$	21,750		$	44,363		$	66,113
Less accumulated amortization	(17,584		)	(13,762		)	(31,346		)
	$	4,166		$	30,601		$	34,767



	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

Intangible amortization expense for fiscal years 2018, 2017 and 2016 was $3,316, $2,061 and $2,141, respectively.

The intangible amortization expense estimated for the five fiscal years following fiscal year 2018 and thereafter is as follows:




Estimated Future Amortization Expense as of December 31, 2018
For the fiscal year ending December 31, 2019	$	5,601
For the fiscal year ending December 31, 2020	$	4,997
For the fiscal year ending December 31, 2021	$	4,094
For the fiscal year ending December 31, 2022	$	3,534
For the fiscal year ending December 31, 2023	$	3,231
Thereafter	$	13,310

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

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