INCOME TAXES - Composition of our deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Charitable contributions	$ 6	$ 1
Net operating loss carry forwards	74,313	66,851
Depreciation (including air rights)	5,717	5,737
Lease liability	359	507
Other	212	256
Pension costs	225	0
Investment in joint venture	448	777
Accrued expenses	356	332
Total deferred tax assets	81,636	74,461
Valuation allowance	(78,285)	(70,134)
Deferred tax asset after valuation allowance	3,351	4,327
Deferred tax liabilities:
Intangibles	(2,706)	(3,003)
Other	(261)	(253)
Pension costs	0	(571)
Right-of-use asset	(384)	(500)
Total deferred tax liabilities	(3,351)	(4,327)
Net deferred tax assets	0	0
Current deferred tax assets	0	0
Long-term deferred tax assets	0	0
Total deferred tax assets	$ 0	$ 0