SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Regions Segments	Dec. 31, 2015 USD ($)	Mar. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Segments			1
Number of reportable segments | Regions			4
Total consolidated gross revenue	$ 337,443	$ 419,887	$ 1,064,308	$ 1,333,794
Total earnings (loss) from unconsolidated affiliates, net of losses - equity method investments	766	7,649	4,734	(1,415)
Loss on disposal of assets	(874)	(2,154)	(13,077)	(23,856)
Total consolidated operating income (loss)	(19,097)	22,077	(72,214)	(2,922)
Total depreciation and amortization	29,768	32,320	93,054	106,853
Total identifiable assets	3,131,109		3,131,109		$ 3,262,945
Total investments in unconsolidated affiliates - equity method	200,511		200,511		188,666
Accelerated depreciation	1,100	5,000	9,300	22,400
Construction in progress within property and equipment	228,800		228,800		307,400
Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	2,293	2,108	8,565	10,005
External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	337,443	419,887	1,064,308	1,333,794
Europe Caspian
Segment Reporting Information [Line Items]
Total consolidated gross revenue	180,910	209,154	571,598	658,678
Total earnings (loss) from unconsolidated affiliates, net of losses - equity method investments	125	93	241	345
Total consolidated operating income (loss)	(303)	26,986	18,468	56,243
Total depreciation and amortization	11,185	8,912	33,594	29,889
Total identifiable assets	981,364		981,364		1,067,647
Total investments in unconsolidated affiliates - equity method	214		214		298
Accelerated depreciation			400
Europe Caspian | Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	1,278	302	5,308	1,379
Europe Caspian | External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	179,632	208,852	566,290	657,299
Africa
Segment Reporting Information [Line Items]
Total consolidated gross revenue	50,516	63,287	156,422	207,503
Total consolidated operating income (loss)	10,441	4,377	19,954	24,903
Total depreciation and amortization	4,007	8,581	12,680	24,274
Total identifiable assets	424,590		424,590		304,081
Accelerated depreciation	1,100	5,000	5,000	11,600
Africa | Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	0	0	0	2
Africa | External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	50,516	63,287	156,422	207,501
Americas
Segment Reporting Information [Line Items]
Total consolidated gross revenue	53,339	72,232	169,590	226,062
Total earnings (loss) from unconsolidated affiliates, net of losses - equity method investments	831	7,556	4,954	(1,760)
Total consolidated operating income (loss)	2,226	22,797	5,790	30,283
Total depreciation and amortization	7,060	7,797	25,669	28,523
Total identifiable assets	840,101		840,101		884,455
Total investments in unconsolidated affiliates - equity method	196,935		196,935		183,990
Accelerated depreciation			3,900	4,500
Americas | Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	977	1,406	2,939	6,778
Americas | External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	52,362	70,826	166,651	219,284
Asia Pacific
Segment Reporting Information [Line Items]
Total consolidated gross revenue	52,857	73,598	167,257	232,679
Total consolidated operating income (loss)	(9,012)	458	(24,480)	4,783
Total depreciation and amortization	4,973	4,268	13,586	17,445
Total identifiable assets	394,544		394,544		426,677
Accelerated depreciation				6,300
Asia Pacific | Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	0	0	1	2
Asia Pacific | External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	52,857	73,598	167,256	232,677
Corporate And Other
Segment Reporting Information [Line Items]
Total consolidated gross revenue	2,114	3,724	8,006	18,877
Total earnings (loss) from unconsolidated affiliates, net of losses - equity method investments	(190)	0	(461)	0
Total consolidated operating income (loss)	(21,575)	(30,387)	(78,869)	(95,278)
Total depreciation and amortization	2,543	2,762	7,525	6,722
Total identifiable assets	490,510		490,510		580,085
Total investments in unconsolidated affiliates - equity method	3,362		3,362		$ 4,378
Corporate And Other | Intersegment eliminations
Segment Reporting Information [Line Items]
Total consolidated gross revenue	38	400	317	1,844
Corporate And Other | External Customer
Segment Reporting Information [Line Items]
Total consolidated gross revenue	$ 2,076	$ 3,324	$ 7,689	$ 17,033