INCOME TAXES - Reconciliation of Income Tax Uncertainties (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the beginning and ending amount of income tax uncertainties
Balance at the beginning of period	$ 4,504	$ 3,647	$ 3,559
Increases based on tax positions for the current year	262	212	412
Increases based on tax positions of prior years	3,348	790	663
Settlements	(567)	0	(558)
Lapse of statute of limitations	(322)	(145)	(429)
Balance at the end of period	$ 7,225	$ 4,504	$ 3,647