CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (31,396)	$ (30,107)	$ (87,142)	$ (71,179)
Other comprehensive loss:
Currency translation adjustments	10,691	(5,439)	20,451	(12,574)
Total comprehensive loss	(20,705)	(35,546)	(66,691)	(83,753)
Net loss attributable to noncontrolling interests	187	310	658	610
Currency translation adjustments attributable to noncontrolling interests	237	(523)	547	(4,965)
Total comprehensive (income) loss attributable to noncontrolling interests	424	(213)	1,205	(4,355)
Total comprehensive loss attributable to Bristow Group	$ (20,281)	$ (35,759)	$ (65,486)	$ (88,108)