SEGMENT INFORMATION (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues from external customers		$ 112,943	$ 144,405	$ 222,216	$ 269,721
Intersegment revenues		0	0	0	0
Depreciation and amortization		14,262	20,717	28,558	41,073
Other operating expenses		113,108	132,601	223,397	255,386
Operating income (loss)		(14,427)	(8,913)	(29,739)	(26,738)
Interest expense, net of amounts capitalized		8,520	8,573	17,753	16,717
Income (loss) before income taxes		(22,708)	(16,734)	(46,111)	(41,696)
Long-lived assets	[1]	266,985	309,332	266,985	309,332
Total assets		403,515	489,503	403,515	489,503	$ 443,174
Capital expenditures		7,322	7,729	12,362	17,173
Rig Services
Segment Reporting Information [Line Items]
Revenues from external customers		67,884	80,456	132,910	150,760
Intersegment revenues		166	191	254	256
Depreciation and amortization		6,141	7,870	12,130	15,657
Other operating expenses		55,861	64,532	110,442	124,099
Operating income (loss)		5,882	8,054	10,338	11,004
Interest expense, net of amounts capitalized		26	0	36	0
Income (loss) before income taxes		5,867	8,090	10,336	11,096
Long-lived assets	[1]	128,945	150,617	128,945	150,617
Total assets		178,747	212,059	178,747	212,059
Capital expenditures		983	4,282	2,813	7,748
Fluid Management Services
Segment Reporting Information [Line Items]
Revenues from external customers		14,812	16,489	29,399	30,324
Intersegment revenues		287	556	1,195	1,071
Depreciation and amortization		4,204	5,891	8,354	11,645
Other operating expenses		12,430	12,739	23,990	24,772
Operating income (loss)		(1,822)	(2,141)	(2,945)	(6,093)
Interest expense, net of amounts capitalized		6	0	13	0
Income (loss) before income taxes		(1,823)	(2,135)	(2,947)	(6,080)
Long-lived assets	[1]	45,616	53,170	45,616	53,170
Total assets		59,541	68,716	59,541	68,716
Capital expenditures		0	414	2,073	780
Coiled Tubing Services
Segment Reporting Information [Line Items]
Revenues from external customers		11,747	23,870	22,420	42,293
Intersegment revenues		0	10	0	19
Depreciation and amortization		1,270	1,312	2,526	2,484
Other operating expenses		11,926	19,405	23,481	32,724
Operating income (loss)		(1,449)	3,153	(3,587)	7,085
Interest expense, net of amounts capitalized		14	0	30	0
Income (loss) before income taxes		(1,461)	3,156	(3,614)	7,088
Long-lived assets	[1]	17,340	19,114	17,340	19,114
Total assets		27,949	37,649	27,949	37,649
Capital expenditures		1,151	841	1,917	3,898
Fishing and Rental Services
Segment Reporting Information [Line Items]
Revenues from external customers		18,500	23,590	37,487	46,344
Intersegment revenues		32	346	75	697
Depreciation and amortization		2,182	5,140	4,623	10,319
Other operating expenses		16,119	20,056	32,556	40,695
Operating income (loss)		199	(1,606)	308	(4,670)
Interest expense, net of amounts capitalized		10	0	21	0
Income (loss) before income taxes		185	(1,577)	291	(4,605)
Long-lived assets	[1]	51,175	65,935	51,175	65,935
Total assets		63,880	82,620	63,880	82,620
Capital expenditures		1,898	653	2,055	2,136
Functional Support
Segment Reporting Information [Line Items]
Revenues from external customers		0	0	0	0
Intersegment revenues		0	0	0	0
Depreciation and amortization		465	504	925	968
Other operating expenses		16,772	15,869	32,928	33,096
Operating income (loss)		(17,237)	(16,373)	(33,853)	(34,064)
Interest expense, net of amounts capitalized		8,464	8,573	17,653	16,717
Income (loss) before income taxes		(25,476)	(24,268)	(50,177)	(49,195)
Long-lived assets	[1]	23,909	86,921	23,909	86,921
Total assets		58,610	146,398	58,610	146,398
Capital expenditures		3,290	1,539	3,504	2,611
Reconciling Eliminations
Segment Reporting Information [Line Items]
Revenues from external customers		0	0	0	0
Intersegment revenues		(485)	(1,103)	(1,524)	(2,043)
Depreciation and amortization		0	0	0	0
Other operating expenses		0	0	0	0
Operating income (loss)		0	0	0	0
Interest expense, net of amounts capitalized		0	0	0	0
Income (loss) before income taxes		0	0	0	0
Long-lived assets	[1]	0	(66,425)	0	(66,425)
Total assets		14,788	(57,939)	14,788	(57,939)
Capital expenditures		$ 0	$ 0	$ 0	$ 0

[1] Long-lived assets include fixed assets, intangibles and other non-current assets