GOODWILL AND OTHER INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in goodwill for the six months ended June 30, 2016 were as follows (in thousands):



	Technical Services			Industrial & Field Services		Kleen Performance Products		SK Environmental Services		Lodging Services		Oil and Gas Field Services		Totals
Balance at January 1, 2016	$	49,267		$	105,286	$	49,755	$	216,589	$	32,208	$	—	$	453,105
Acquired from acquisitions	—			—		1,197		—		—		—		1,197
Measurement period adjustment from prior acquisitions	—			—		—		2,095		—		—		2,095
Foreign currency translation and other	(579		)	1,319		157		2,140		2,057		—		5,094
Balance at June 30, 2016	$	48,688		$	106,605	$	51,109	$	220,824	$	34,265	$	—	$	461,491

The Company assesses goodwill for impairment on an annual basis as of December 31, or at an interim date when events or changes in the business environment would more likely than not reduce the fair value of a reporting unit below its carrying value. The Company conducted the annual impairment test of goodwill for all reporting units as of December 31, 2015 and determined that no adjustment to the carrying value of goodwill for any reporting units was necessary because the fair value of each of the reporting units exceeded that reporting unit's respective carrying value. The Company's next annual impairment assessment will be performed as of December 31, 2016 unless indicators arise that would require the Company to re-evaluate at an earlier date.

As of June 30, 2016 and December 31, 2015, the Company's finite-lived and indefinite-lived intangible assets consisted of the following (in thousands):



	June 30, 2016							December 31, 2015
	Cost		Accumulated Amortization		Net		Weighted Average Remaining Amortization Period (in years)	Cost		Accumulated Amortization		Net		Weighted Average Remaining Amortization Period (in years)
Permits	$	162,611	$	64,533	$	98,078	20.7	$	161,396	$	61,142	$	100,254	19.0
Customer and supplier relationships	379,236		115,500		263,736		9.5	374,866		99,463		275,403		10.1
Other intangible assets	33,984		26,517		7,467		1.2	31,416		22,581		8,835		1.5
Total amortizable permits and other intangible assets	575,831		206,550		369,281		9.3	567,678		183,186		384,492		10.0
Trademarks and trade names	122,943		—		122,943		Indefinite	122,326		—		122,326		Indefinite
Total permits and other intangible assets	$	698,774	$	206,550	$	492,224		$	690,004	$	183,186	$	506,818

Amortization expense of permits and other intangible assets was $9.9 million and $19.5 million for the three and six months ended June 30, 2016, respectively. Amortization expense of permits and other intangible assets was $8.8 million and $19.8 million for the three and six months ended June 30, 2015, respectively.

The expected amortization of the net carrying amount of finite-lived intangible assets at June 30, 2016 was as follows (in thousands):



Years Ending December 31,	Expected Amortization
2016 (six months)	$	19,941
2017	35,033
2018	31,795
2019	28,897
2020	26,277
Thereafter	227,338
	$	369,281

- 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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