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FAIR VALUE MEASUREMENTS AND INVESTMENTS - Recurring (Details) - Recurring basis - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair value measurements |  |
Total assets and liabilities measured at fair value | $ (17,990) | $ (18,567)
Alaska communications |  |
Fair value measurements |  |
Derivative liabilities |  | (22,640)
Money market funds |  |
Fair value measurements |  |
Cash and cash equivalents | 3,164 | 3,301
Short Term Investments |  |
Fair value measurements |  |
Investments | 300 | 300
Other investments |  |
Fair value measurements |  |
Investments | 2,024 | 1,925
Redeemable common units |  |
Fair value measurements |  |
Derivative liabilities | (22,640) |
Warrant |  |
Fair value measurements |  |
Derivative liabilities | (559) | (559)
Interest rate swap |  |
Fair value measurements |  |
Derivative liabilities | (279) | (894)
Level 1 |  |
Fair value measurements |  |
Total assets and liabilities measured at fair value | 3,464 | 3,601
Level 1 | Money market funds |  |
Fair value measurements |  |
Cash and cash equivalents | 3,164 | 3,301
Level 1 | Short Term Investments |  |
Fair value measurements |  |
Investments | 300 | 300
Level 2 |  |
Fair value measurements |  |
Total assets and liabilities measured at fair value | (279) | (894)
Level 2 | Interest rate swap |  |
Fair value measurements |  |
Derivative liabilities | (279) | (894)
Level 3 |  |
Fair value measurements |  |
Total assets and liabilities measured at fair value | (21,175) | (21,274)
Level 3 | Alaska communications |  |
Fair value measurements |  |
Derivative liabilities |  | (22,640)
Level 3 | Other investments |  |
Fair value measurements |  |
Investments | 2,024 | 1,925
Level 3 | Redeemable common units |  |
Fair value measurements |  |
Derivative liabilities | (22,640) |
Level 3 | Warrant |  |
Fair value measurements |  |
Derivative liabilities | $ (559) | $ (559)

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