ACCRUED EXPENSES (Tables)

12 Months Ended

Dec. 31, 2023

Payables and Accruals [Abstract]

Accrued Expenses

Accrued expenses consist of the following (in thousands):

	December 31,
	2023		2022
Compensation	$	29,456	$	31,751
PPG Industries, Inc. agreement		11,962		9,864
Consulting		2,121		910
Professional fees		1,124		906
Research and development agreements		822		662
Royalties		647		877
Other		5,948		6,032
Accrued expenses	$	52,080	$	51,002