REVENUES - Remaining Performance Obligations Total (Details) $ in Thousands |
Dec. 31, 2020
USD ($)
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| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Total remaining performance obligation, amount | $ 1,118,559 |
| Helicopter contracts | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Total remaining performance obligation, amount | 1,117,814 |
| Fixed-wing contracts | |
| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] | |
| Total remaining performance obligation, amount | $ 745 |
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- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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