INCOME TAXES - Deferred tax assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss and capital loss carryforwards and credits	$ 47,386	$ 78,428
Compensation expense for share-based awards	607	383
Fixed assets and intangibles	0	0
Basis of investments in affiliates	0	18
Accrued liabilities and other	1,551	1,495
Lease liability	784	726
State taxes	94	0
Total deferred tax assets	50,457	81,050
Valuation allowance	(48,250)	(40,585)
Total deferred tax assets, net of valuation allowance	2,207	40,465
Deferred tax liabilities:
ROU Asset	(782)	(726)
Fixed assets and intangibles	(2,166)	(2,572)
Unrealized gain on investments held at fair value	0	(55,696)
Other	0	(23)
Total deferred tax liabilities	(2,948)	(59,017)
Net deferred tax liabilities	(742)	(18,552)
Deferred Tax Asset, Debt Securities, Available-for-Sale, Unrealized Loss	$ 35	$ 0