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FINANCING ARRANGEMENTS - Narrative (Details) - USD ($) |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 30, 2023 | Jun. 09, 2022 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Nov. 08, 2022 | Jun. 08, 2022 | Jan. 31, 2022 | Jan. 07, 2022
Debt Instrument |  |  |  |  |  |  |  |  |
Long-term debt gross |  |  | $ 125,914,000 | $ 136,932,000 |  |  |  |  |
Debt instrument, covenant debt service coverage ratio |  |  | 1.10 |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 27,850,000 | $ 3,813,000 |  |  |  |  |
Weighted average interest rate (as a percentage) |  |  | 7.77% | 3.90% |  |  |  |  |
Unsecured Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Guarantor obligations |  |  | $ 1,600,000 |  |  |  |  |  |
Unsecured Debt | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Long-term debt gross |  |  | 47,963,000 | $ 51,813,000 |  |  |  |  |
Unsecured Debt | Jet Yard Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Long-term debt gross |  |  | 1,844,000 | 1,943,000 |  |  |  |  |
Unsecured Debt | Contrail Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  |  |  |  |  |  |  |  | 4.68%
Long-term debt gross |  |  | 50,621,000 | 57,459,000 |  |  |  |  | $ 43,600,000
Repayments of long-term debt | $ 6,700,000 |  |  |  |  |  |  |  |
Unsecured Debt | Contrail Debt | Period One |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt covenant tangible asset net worth |  |  |  |  |  | $ 12,000,000 |  |  |
Unsecured Debt | Contrail Debt | Period Two |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt covenant tangible asset net worth |  |  |  |  |  | $ 15,000,000 |  |  |
Unsecured Debt | Worldwide Aviation, LLC |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  |  |  |  |  |  |  | 6.00% |
Long-term debt gross |  |  |  |  |  |  |  | $ 1,500,000 |
Promissory Note - CCI |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Minimum net worth required for compliance |  |  | $ 2,000,000 |  |  |  |  |  |
Promissory Note - CCI | Unsecured Debt | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Minimum net worth required for compliance |  |  |  |  | $ 2,000,000 |  |  |  |
Interest rate stated percentage (as a percentage) |  |  | 10.00% |  | 10.00% |  |  |  |
Long-term debt gross |  |  | $ 0 | 0 |  |  |  |  |
Promissory Note - CCI | Unsecured Debt | Jet Yard Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Minimum net worth required for compliance |  | $ 5,000,000 |  |  |  |  |  |  |
Line of credit maximum borrowing capacity |  | 22,000,000 |  |  |  |  | $ 17,000,000 |  |
Amended Promissory Note | Unsecured Debt | Jet Yard Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt instrument, outstanding credit rate trigger |  | $ 17,000,000 |  |  |  |  |  |  |
Amended Promissory Note | Unsecured Debt | Jet Yard Debt | Below 17m outstanding |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  | 2.50% |  |  |  |  |  |  |
Amended Promissory Note | Unsecured Debt | Jet Yard Debt | Below 17m outstanding | Prime Rate |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percentage) |  | 1.00% |  |  |  |  |  |  |
Commitment fee (as a percentage) |  | 0.11% |  |  |  |  |  |  |
Amended Promissory Note | Unsecured Debt | Jet Yard Debt | Above 17m outstanding |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  | 2.50% |  |  |  |  |  |  |
Amended Promissory Note | Unsecured Debt | Jet Yard Debt | Above 17m outstanding | Prime Rate |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percentage) |  | 0.50% |  |  |  |  |  |  |
Commitment fee (as a percentage) |  | 0.20% |  |  |  |  |  |  |
Overline Note - MBT | Unsecured Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Employee retention tax credit |  | $ 9,100,000 |  |  |  |  |  |  |
Received refunds |  | $ 2,600,000 |  |  |  |  |  |  |
Overline Note - MBT | Unsecured Debt | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  |  | 2.50% |  |  |  |  |  |
Employee retention tax credit |  |  |  | 9,100,000 |  |  |  |  |
Long-term debt gross |  |  | $ 0 | 0 |  |  |  |  |
Overline Note - MBT | Unsecured Debt | Prime Rate | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percentage) |  |  | 0.50% |  |  |  |  |  |
Revolver - MBT | Unsecured Debt | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Interest rate stated percentage (as a percentage) |  |  | 2.50% |  |  |  |  |  |
Long-term debt gross |  |  | $ 8,742,000 | 10,969,000 |  |  |  |  |
Revolver - MBT | Unsecured Debt | Prime Rate | Parent Company |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percentage) |  |  | 1.00% |  |  |  |  |  |
Master Loan Agreement |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Debt instrument, principal payments |  |  | $ 20,000,000 |  |  |  |  |  |
Term Loan G - ONB | Unsecured Debt | Contrail Debt |  |  |  |  |  |  |  |  |
Debt Instrument |  |  |  |  |  |  |  |  |
Basis spread on variable rate (as a percentage) |  |  | 3.00% |  |  |  |  |  |
Long-term debt gross |  |  | $ 38,180,000 | $ 44,918,000 |  |  |  |  |
Repayments of long-term debt |  |  | $ 6,700,000 |  |  |  |  |  |

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