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VARIABLE INTEREST ENTITIES AND EQUITY INVESTMENTS AND ADVANCES Aeroleo Narrative (Details) - USD ($) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Jul. 01, 2011 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Oct. 01, 2015
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investments in and advances to equity investees |  | $ 0 | $ 0 | $ 126 |
Percent of voting interest |  | 80.00% |  |  |
Assets |  | $ 764,515 | 764,863 |  |
Liabilities |  | $ 304,961 | 298,125 |  |
Aeroleo |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership | 50.00% |  |  |  |
Voting ownership percentage | 20.00% |  |  |  |
Investments in and advances to equity investees | $ 4,800 |  |  |  |
Aeroleo | Equity Method Investee |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Notes receivable to related party | $ 6,000 |  |  |  |
Notes receivable interest rate | 6.00% |  |  |  |
Assets |  |  | 11,900 |  |
Liabilities |  |  | $ 4,500 |  |
Variable Interest Entity, Not Primary Beneficiary | Aeroleo |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Percent of economic interest |  |  |  |  | 50.00%
Percent of voting interest |  |  |  |  | 80.00%

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