CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (9,937)	$ (26,048)	$ (97,079)	$ (97,227)
Other comprehensive loss:
Currency translation adjustments	(57)	(18,896)	20,394	(31,470)
Total comprehensive loss	(9,994)	(44,944)	(76,685)	(128,697)
Net loss attributable to noncontrolling interests	1,664	4,121	2,322	4,731
Currency translation adjustments attributable to noncontrolling interests	(17)	(687)	530	(5,652)
Total comprehensive (income) loss attributable to noncontrolling interests	1,647	3,434	2,852	(921)
Total comprehensive loss attributable to Bristow Group	$ (8,347)	$ (41,510)	$ (73,833)	$ (129,618)