CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 30,434	$ 2,961	$ 54,630	$ 24,180
Currency translation adjustments	4,321	(12,145)	4,626	(11,360)
Unrealized gain (loss) on cash flow hedges, net	0	(1,653)	0	(2,150)
Comprehensive income	34,755	(10,837)	59,256	10,670
Total comprehensive income attributable to noncontrolling interests	(766)	(250)	(1,300)	(424)
Total comprehensive income attributable to Bristow Group	$ 33,989	$ (11,087)	$ 57,956	$ 10,246