Bristow Group Inc. Annual report pursuant to Section 13 and 15(d)

PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	5 Months Ended	7 Months Ended	12 Months Ended
	Oct. 31, 2019	Mar. 31, 2020	Oct. 31, 2019	Mar. 31, 2021	Mar. 31, 2019
Property, Plant and Equipment [Line Items]
Impairment of equipment and inventory				$ 12,400
Impairment of property and equipment	$ 42,022	$ 0		$ 0	$ 104,939
H225 Aircraft
Property, Plant and Equipment [Line Items]
Impairment of inventories					8,900
Impairment of property and equipment			$ 42,000		87,500
Eastern Airways
Property, Plant and Equipment [Line Items]
Impairment of inventories					300
Impairment of property and equipment					$ 17,500