GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2019

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, 2018	$	162,816	$	(6,870)	$	51,231	$	—	$	207,177
Winnie purchase price allocation adjustment		2,586		—		—		—		2,586
Foreign currency translation		703		—		—		—		703
Balance at June 30, 2019	$	166,105	$	(6,870)	$	51,231	$	—	$	210,466

Schedule of intangible assets, net

	June 30, 2019						December 31, 2018
			Accumulated						Accumulated
$s in thousands	Cost		Amortization		Net		Cost		Amortization		Net
Amortizing intangible assets:
Permits, licenses and lease	$	165,600	$	(16,817)	$	148,783	$	164,840	$	(14,804)	$	150,036
Customer relationships		99,396		(28,948)		70,448		99,241		(25,676)		73,565
Technology - formulae and processes		6,951		(1,897)		5,054		6,672		(1,714)		4,958
Customer backlog		3,652		(1,839)		1,813		3,652		(1,656)		1,996
Developed software		2,894		(1,737)		1,157		2,884		(1,581)		1,303
Non-compete agreements		1,542		(1,076)		466		1,542		(875)		667
Internet domain and website		536		(142)		394		536		(128)		408
Database		387		(181)		206		384		(167)		217
Total amortizing intangible assets		280,958		(52,637)		228,321		279,751		(46,601)		233,150
Non-amortizing intangible assets:
Permits and licenses		46,415		—		46,415		46,391		—		46,391
Tradename		130		—		130		125		—		125
Total intangible assets	$	327,503	$	(52,637)	$	274,866	$	326,267	$	(46,601)	$	279,666