GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

The changes in goodwill for the three months ended March 31, 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
Measurement period adjustment from prior acquisitions	—			—		—		2,095		—		—		2,095
Foreign currency translation and other	(573		)	1,351		388		2,170		2,106		—		5,442
Balance at March 31, 2016	$	48,694		$	106,637	$	50,143	$	220,854	$	34,314	$	—	$	460,642

Summary of amortizable other intangible assets

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



	March 31, 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	$	164,160	$	63,179	$	100,981	18.3	$	161,396	$	61,142	$	100,254	19.0
Customer and supplier relationships	379,339		108,612		270,727		9.7	374,866		99,463		275,403		10.1
Other intangible assets	32,856		24,990		7,866		1.3	31,416		22,581		8,835		1.5
Total amortizable permits and other intangible assets	576,355		196,781		379,574		9.6	567,678		183,186		384,492		10.0
Trademarks and trade names	122,958		—		122,958		Indefinite	122,326		—		122,326		Indefinite
Total permits and other intangible assets	$	699,313	$	196,781	$	502,532		$	690,004	$	183,186	$	506,818

Schedule of expected amortization for the net carrying amount of finite lived intangible assets

The expected amortization of the net carrying amount of finite-lived intangible assets at March 31, 2016 was as follows (in thousands):



Years Ending December 31,	Expected Amortization
2016 (nine months)	$	29,251
2017	33,936
2018	31,156
2019	28,438
2020	25,719
Thereafter	231,074
	$	379,574