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REVENUE - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |  |  |
Discounts and incentives | $ 2,700 | $ 5,000 | $ 9,400 | $ 12,500 |
Gross receivables from members and customers | 118,100 |  | 118,100 |  | $ 71,800
Undeposited funds | 13,600 |  | 13,600 |  | 13,500
Allowance for expected credit losses | 4,300 |  | 4,300 |  | 5,900
Capitalized sales commission and referral fees | 3,300 | 3,400 | 12,600 | 7,400 |
Amortization expense | 4,400 | 2,400 | 12,100 | 5,900 |
Revenue | 420,356 | $ 301,978 | 1,171,503 | $ 849,215 |
Whole aircraft sales | Services transferred at a point in time: |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenue | 35,900 |  | 63,900 |  |
Prepaid expenses |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Capitalized contract cost, net | 9,200 |  | 9,200 |  | 8,600
Other current assets |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Capitalized contract cost, net | $ 1,500 |  | $ 1,500 |  | $ 1,400

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