GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2020

GOODWILL AND INTANGIBLE ASSETS

Schedule of changes in goodwill

					Field &
	Environmental				Industrial
	Services				Services
			Accumulated				Accumulated
$s in thousands	Gross		Impairment		Gross		Impairment		Total
Balance at December 31, 2019	$	475,271	$	(6,870)	$	298,579	$	—	$	766,980
Impairment charges		—		(283,600)		—		(16,700)		(300,300)
NRC Merger purchase price allocation adjustment		1,895		—		1,470		—		3,365
Impact Environmental acquisition		—		—		300		—		300
Foreign currency translation		(741)		—		(326)		—		(1,067)
Balance at June 30, 2020	$	476,425	$	(290,470)	$	300,023	$	(16,700)	$	469,278

Schedule of intangible assets, net

	June 30, 2020						December 31, 2019
			Accumulated						Accumulated
$s in thousands	Cost		Amortization		Net		Cost		Amortization		Net
Amortizing intangible assets:
Permits, licenses and lease	$	173,435	$	(20,492)	$	152,943	$	174,339	$	(18,707)	$	155,632
Customer relationships		333,491		(48,275)		285,216		333,090		(35,254)		297,836
Technology - formulae and processes		6,670		(2,035)		4,635		6,964		(2,013)		4,951
Customer backlog		3,652		(2,204)		1,448		3,652		(2,022)		1,630
Tradename		10,390		(6,457)		3,933		10,390		(4,832)		5,558
Developed software		2,884		(2,018)		866		2,895		(1,884)		1,011
Non-compete agreements		5,528		(3,063)		2,465		5,455		(1,694)		3,761
Internet domain and website		536		(170)		366		536		(156)		380
Database		384		(198)		186		388		(191)		197
Total amortizing intangible assets		536,970		(84,912)		452,058		537,709		(66,753)		470,956
Non-amortizing intangible assets:
Permits and licenses		103,790		—		103,790		103,816		—		103,816
Tradename		125		—		125		130		—		130
Total intangible assets	$	640,885	$	(84,912)	$	555,973	$	641,655	$	(66,753)	$	574,902