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NOTES PAYABLE AND DEBT INSTRUMENTS - Summary of Interest Expense of PCT's Convertible Debt (Details) - Convertible Debt - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Instrument [Line Items]      
Contractual interest expense $ 0 $ 2,975 $ 662
Amortization of deferred financing costs $ 0 $ 1,712 $ 300
Effective interest rate 0.00% 8.94% 9.05%