UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net loss	$ (30,107)	$ (45,680)	$ (71,179)	$ (47,309)
Other comprehensive loss:
Currency translation adjustments	(5,439)	(16,950)	(12,574)	(4,342)
Total comprehensive loss	(35,546)	(62,630)	(83,753)	(51,651)
Net (income) loss attributable to noncontrolling interests	310	(1,452)	610	(3,080)
Currency translation adjustments attributable to noncontrolling interests	(523)	(1,535)	(4,965)	571
Total comprehensive income attributable to noncontrolling interests	(213)	(2,987)	(4,355)	(2,509)
Total comprehensive loss attributable to Bristow Group	(35,759)	(65,617)	(88,108)	(54,160)
Accretion of redeemable noncontrolling interests	0	(4,803)	0	1,498
Total comprehensive loss attributable to common stockholders	$ (35,759)	$ (60,814)	$ (88,108)	$ (55,658)