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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Intellectual Property Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disaggregation of Revenue [Line Items]    
Inventor royalties $ 1,212 $ 1,142
Contingent legal fees 2,444 12,074
Litigation and licensing expenses 3,970 5,462
Amortization of patents 10,403 9,851
Total cost of revenues 37,388 36,098
Intellectual property operations    
Disaggregation of Revenue [Line Items]    
Inventor royalties 1,212 1,142
Contingent legal fees 2,444 12,074
Litigation and licensing expenses 3,970 5,462
Amortization of patents 10,403 9,851
Other patent portfolio expense 0 162
Total cost of revenues $ 18,029 $ 28,691