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CONVERTIBLE SENIOR NOTES (Schedule of Interest Expense) (Details) - 2028 Convertible Senior Notes - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Debt Instrument [Line Items]        
Contractual interest expense $ 3,319 $ 3,375 $ 6,694 $ 6,750
Amortization of debt issuance costs 155 154 311 307
Total interest expense $ 3,474 $ 3,529 $ 7,005 $ 7,057