INCOME TAXES - Summary of Operating Loss and Tax Credit Carryforwards (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
NOL Carryforwards
Tax credit carryforwards	$ 13,701	$ 14,555
State and Local Jurisdiction
NOL Carryforwards
Net operating loss carryforwards	1,802	2,983
Previous | Domestic Tax Authority
NOL Carryforwards
Net operating loss carryforwards		2,363
Post | Domestic Tax Authority
NOL Carryforwards
Net operating loss carryforwards	$ 10,687	$ 13,017