Annual report pursuant to Section 13 and 15(d)

REVENUES - Schedule of Service Revenue (Details)

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REVENUES - Schedule of Service Revenue (Details) - USD ($)
$ in Thousands
 5 Months Ended 7 Months Ended 12 Months Ended
Mar. 31, 2020
Oct. 31, 2019
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]        
Total revenues $ 485,763 $ 757,223 $ 1,185,204 $ 1,178,062
Service        
Disaggregation of Revenue [Line Items]        
Total revenues 467,725 722,919 1,139,063 1,139,024
Oil and Gas Service        
Disaggregation of Revenue [Line Items]        
Total revenues 336,073 500,872 767,720 788,024
Oil and Gas Service | Revision of Prior Period, Reclassification, Adjustment        
Disaggregation of Revenue [Line Items]        
Total revenues (4,700) (21,500)   (12,700)
Government services        
Disaggregation of Revenue [Line Items]        
Total revenues 91,019 129,376 272,859 252,131
Government services | Revision of Prior Period, Reclassification, Adjustment        
Disaggregation of Revenue [Line Items]        
Total revenues 400 900   26,800
Fixed wing services        
Disaggregation of Revenue [Line Items]        
Total revenues 35,579 70,755 85,372 73,751
Other services        
Disaggregation of Revenue [Line Items]        
Total revenues 5,054 21,916 $ 13,112 25,118
Other services | Revision of Prior Period, Reclassification, Adjustment        
Disaggregation of Revenue [Line Items]        
Total revenues 4,700 21,500   12,700
Oil And Gas And Other Services | Revision of Prior Period, Reclassification, Adjustment        
Disaggregation of Revenue [Line Items]        
Total revenues $ (400) $ (900)   $ (26,800)