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DEBT - Rollforward (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Long-term debt |  |
Long-term portion | $ 24,250 | $ 24,080
Term Loan |  |
Long-term debt |  |
Balance, beginning of year | 48,160 | 49,516
Interest expense | 2,757 | 5,394
Interest payments | (2,417) | (4,875)
Bonus Interest - Equity based financing fee |  | (1,875)
Balance, end of year | 48,500 | 48,160
Long-term portion | $ 48,500 | $ 48,160

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