ENTITY WIDE DISCLOSURES - Segment Data for our Three Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Revenues	$ 286,554	$ 250,854
Operating income (loss)	(12,088)	(7,380)
Capital expenditures	10,718	11,580
Depreciation and amortization	12,961	10,023
Operating segments | Team Qualspec
Segment Reporting Information [Line Items]
Revenues	142,956	136,262
Operating income (loss)	8,125	7,944
Capital expenditures	2,512	2,989
Depreciation and amortization	4,855	5,054
Operating segments | Team Furmanite
Segment Reporting Information [Line Items]
Revenues	121,822	100,594
Operating income (loss)	451	7,039
Capital expenditures	4,320	2,977
Depreciation and amortization	5,863	3,324
Operating segments | Quest Integrity
Segment Reporting Information [Line Items]
Revenues	21,776	13,998
Operating income (loss)	4,191	(757)
Capital expenditures	446	631
Depreciation and amortization	1,269	1,282
Corporate and shared support services
Segment Reporting Information [Line Items]
Operating income (loss)	(24,855)	(21,606)
Capital expenditures	3,440	4,983
Depreciation and amortization	$ 974	$ 363