INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Summary of activities related to unrecognized tax benefits
Balance at the beginning of the period	$ 5,828	$ 6,082
Additions to tax positions related to prior years	108	2
Subtractions to tax positions related to prior years	(731)	(256)
Balance at the end of the period	$ 5,205	$ 5,828