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CONVERTIBLE SENIOR NOTES (Schedule of Interest Expense) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Debt Instrument [Line Items]    
Amortization of debt issuance costs $ 156 $ 153
Total interest expense 3,531 3,528
Convertible Senior Notes    
Debt Instrument [Line Items]    
Contractual interest expense $ 3,375 $ 3,375