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FAIR VALUE MEASUREMENTS - Summary of changes in Level 3 instruments (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2022
USD ($)
FAIR VALUE MEASUREMENTS  
Balance at beginning of period $ 360
Interest accrued on face value of 5% Notes 802
Change in fair value of Level 3 liabilities (1,043)
Balance at end of period $ 119