Annual report pursuant to Section 13 and 15(d)

REVENUES - Remaining Performance Obligations (Details)

v3.21.1
REVENUES - Remaining Performance Obligations (Details)
$ in Thousands
Mar. 31, 2021
USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 1,078,125
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 377,086
Remaining performance obligation, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 225,667
Remaining performance obligation, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 185,990
Remaining performance obligation, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 159,086
Remaining performance obligation, expected timing 1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 130,296
Remaining performance obligation, expected timing 1 year
Helicopter contracts  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 1,077,570
Helicopter contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 376,531
Remaining performance obligation, expected timing 1 year
Helicopter contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 225,667
Remaining performance obligation, expected timing 1 year
Helicopter contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 185,990
Remaining performance obligation, expected timing 1 year
Helicopter contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 159,086
Remaining performance obligation, expected timing 1 year
Helicopter contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 130,296
Remaining performance obligation, expected timing 1 year
Fixed wing contracts  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 555
Fixed wing contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 555
Remaining performance obligation, expected timing 1 year
Fixed wing contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 0
Remaining performance obligation, expected timing 1 year
Fixed wing contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 0
Remaining performance obligation, expected timing 1 year
Fixed wing contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 0
Remaining performance obligation, expected timing 1 year
Fixed wing contracts | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-04-01  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]  
Total remaining performance obligation, amount $ 0
Remaining performance obligation, expected timing 1 year