BASIS OF PRESENTATION, CONSOLIDATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Schedule of Accumulated Goodwill Impairment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			$ (50,861,000)
Impairment of goodwill	$ (17,504,000)	$ 0	(17,504,000)	$ 0
Accumulated goodwill impairment - Ending balance	(68,365,000)		(68,365,000)
Europe Caspian
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			(33,883,000)
Impairment of goodwill			0
Accumulated goodwill impairment - Ending balance	(33,883,000)		(33,883,000)
Africa
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			(6,179,000)
Impairment of goodwill			0
Accumulated goodwill impairment - Ending balance	(6,179,000)		(6,179,000)
Americas
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			(576,000)
Impairment of goodwill			0
Accumulated goodwill impairment - Ending balance	(576,000)		(576,000)
Asia Pacific
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			0
Impairment of goodwill			(17,504,000)
Accumulated goodwill impairment - Ending balance	(17,504,000)		(17,504,000)
Corporate and other
Goodwill [Line Items]
Accumulated goodwill impairment - Beginning balance			(10,223,000)
Impairment of goodwill			0
Accumulated goodwill impairment - Ending balance	(10,223,000)		(10,223,000)
Airnorth [Member]
Goodwill [Line Items]
Impairment of goodwill	$ (17,500,000)		$ (17,500,000)