CONVERTIBLE NOTES (Schedule of Interest Expense Recognized) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loss on extinguishment of convertible notes	$ 0	$ 831	$ 0
Amortization of debt issuance costs and debt discount	300	2,673	3,470
2021 Notes
Contractual interest expense		2,855	4,344
Debt discount amortization		2,575	3,470
Loss on extinguishment of convertible notes		831
Other expenses			1,300
Total		6,261	$ 9,114
2024 Notes
Contractual interest expense	2,156	767
Amortization of debt issuance costs and debt discount	300	97
Total	$ 2,456	$ 864