INCOME TAXES - Significant Components of Deferred Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Significant components of the Company's deferred tax assets and liabilities
Tax carryforwards	$ 11,251	$ 13,521
Accrued expenses	1,704	1,537
Other	71	185
Valuation allowance	(13,005)	(15,241)
Net deferred tax assets	21	2
Net Deferred Tax Assets
Gross deferred tax assets	13,066	15,267
Gross deferred tax liabilities	(40)	(24)
Valuation allowance	(13,005)	(15,241)
Net deferred tax assets	$ 21	$ 2