VARIABLE INTEREST ENTITIES - Statements of Operations of VIEs (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Variable Interest Entity [Line Items]
Revenue	$ 333,176	$ 366,668
Net loss	(169,088)	(31,797)
Bristow Aviation Holdings Limited
Variable Interest Entity [Line Items]
Revenue	295,155	331,469
Operating income (loss)	11,280	7,364
Net loss	$ (362,848)	$ (69,021)