BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accumulated Goodwill Impairment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Goodwill, Impaired, Accumulated Impairment Loss [Roll Forward]
March 31, 2017		$ (50,861)
Goodwill, Impairment Loss	$ (8,706)	0	$ (8,706)
December 31, 2017		(50,861)
Europe Caspian
Goodwill, Impaired, Accumulated Impairment Loss [Roll Forward]
March 31, 2017		(33,883)
Goodwill, Impairment Loss		0
December 31, 2017		(33,883)
Africa
Goodwill, Impaired, Accumulated Impairment Loss [Roll Forward]
March 31, 2017		(6,179)
Goodwill, Impairment Loss		0
December 31, 2017		(6,179)
Americas
Goodwill, Impaired, Accumulated Impairment Loss [Roll Forward]
March 31, 2017		(576)
Goodwill, Impairment Loss		0
December 31, 2017		(576)
Corporate and other
Goodwill, Impaired, Accumulated Impairment Loss [Roll Forward]
March 31, 2017		(10,223)
Goodwill, Impairment Loss		0
December 31, 2017		$ (10,223)