CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Gross revenue:
Operating revenue from non-affiliates	$ 1,317,295	$ 1,276,374	$ 1,550,638
Operating revenue from affiliates	67,129	71,476	78,909
Reimbursable revenue from non-affiliates	60,538	52,652	85,966
Total consolidated gross revenue	1,444,962	1,400,502	1,715,513
Operating expense:
Direct cost	1,123,168	1,103,984	1,227,541
Reimbursable expense	59,346	50,313	81,824
Depreciation and amortization	124,042	118,748	136,812
General and administrative	184,987	195,367	224,645
Total operating expense	1,491,543	1,468,412	1,670,822
Loss on impairment	(91,400)	(16,278)	(55,104)
Loss on disposal of assets	(17,595)	(14,499)	(30,693)
Earnings from unconsolidated affiliates, net of losses	6,738	6,945	261
Operating loss	(148,838)	(91,742)	(40,845)
Interest expense, net	(77,060)	(49,919)	(34,128)
Other expense, net	(3,076)	(2,641)	(4,258)
Loss before benefit (provision) for income taxes	(228,974)	(144,302)	(79,231)
Benefit (provision) for income taxes	30,891	(32,588)	2,082
Net loss	(198,083)	(176,890)	(77,149)
Net loss attributable to noncontrolling interests	2,425	6,354	4,707
Net loss attributable to Bristow Group	(195,658)	(170,536)	(72,442)
Accretion of redeemable noncontrolling interests	0	0	(1,498)
Net loss attributable to common stockholders	$ (195,658)	$ (170,536)	$ (73,940)
Loss per common share:
Basic (in dollars per share)	$ (5.54)	$ (4.87)	$ (2.12)
Diluted (in dollar per share)	(5.54)	(4.87)	(2.12)
Cash dividends declared per common share	$ 0.07	$ 0.28	$ 1.09