SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017 USD ($) Regions	Jun. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | Regions	1
Number of reportable segments | Regions	4
Revenues	$ 352,109	$ 369,398
Total earnings from unconsolidated affiliates, net of losses - equity method investments	(665)	3,830
Loss on disposal of assets	699	(10,017)
Total consolidated operating income (loss)	(24,589)	(26,235)
Total depreciation and amortization	31,056	34,694
Total identifiable assets	3,070,830		$ 3,113,847
Total investments in unconsolidated affiliates - equity method	198,888		203,876
Accelerated depreciation		6,900
Construction in progress within property and equipment	112,200		199,300
External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	352,109	369,398
Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	3,352	3,231
Europe Caspian
Segment Reporting Information [Line Items]
Revenues	192,435	196,963
Total earnings from unconsolidated affiliates, net of losses - equity method investments	30	51
Total business unit operating income	4,407	13,030
Total depreciation and amortization	11,822	11,189
Total identifiable assets	1,041,670		1,091,536
Total investments in unconsolidated affiliates - equity method	315		257
Accelerated depreciation		200
Europe Caspian | External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	191,399	194,824
Europe Caspian | Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	1,036	2,139
Africa
Segment Reporting Information [Line Items]
Revenues	50,790	54,262
Total business unit operating income	10,048	1,571
Total depreciation and amortization	3,076	5,453
Total identifiable assets	425,614		325,719
Accelerated depreciation		2,800
Africa | External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	50,790	54,262
Africa | Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Americas
Segment Reporting Information [Line Items]
Revenues	58,056	59,044
Total earnings from unconsolidated affiliates, net of losses - equity method investments	(535)	3,863
Total business unit operating income	(1,256)	921
Total depreciation and amortization	6,999	11,381
Total identifiable assets	881,049		809,071
Total investments in unconsolidated affiliates - equity method	195,357		200,362
Accelerated depreciation		3,900
Americas | External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	55,762	58,197
Americas | Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	2,294	847
Asia Pacific
Segment Reporting Information [Line Items]
Revenues	52,446	59,144
Total business unit operating income	(12,530)	(5,893)
Total depreciation and amortization	5,810	4,236
Total identifiable assets	343,278		433,614
Asia Pacific | External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	52,446	59,144
Asia Pacific | Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Corporate and other
Segment Reporting Information [Line Items]
Revenues	1,734	3,216
Total earnings from unconsolidated affiliates, net of losses - equity method investments	(160)	(84)
Total business unit operating income	(25,957)	(25,847)
Total depreciation and amortization	3,349	2,435
Total identifiable assets	379,219		453,907
Total investments in unconsolidated affiliates - equity method	3,216		$ 3,257
Corporate and other | External Customer [Member]
Segment Reporting Information [Line Items]
Revenues	1,712	2,971
Corporate and other | Intersegment elimination [Member]
Segment Reporting Information [Line Items]
Revenues	$ 22	$ 245