RESTRUCTURING CHARGES - Schedule of Accrued Restructuring Costs (Details) - Employee compensation costs $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Accrued restructuring and severance costs rollforward
Balance at beginning of period	$ 0
Restructuring accrual assumed in Spectrum Merger (See Note 2)	7,508
Net accrual additions	4,068
Cash paid	(7,198)
Balance at end of period	$ 4,378