INCOME TAXES - Composition of our deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Charitable contributions	$ 1	$ 15
Net operating loss carry forwards	64,404	58,635
Depreciation (including air rights)	4,664	4,677
Lease liability	507	571
Other	247	160
Investment in joint venture	777	678
Accrued expenses	332	132
Total deferred tax assets	70,932	64,868
Valuation allowance	(66,605)	(60,930)
Deferred tax asset after valuation allowance	4,327	3,938
Deferred tax liabilities:
Intangibles	(3,003)	(3,273)
Other	(253)	0
Pension costs	(571)	(114)
Right-of-use asset	(500)	(551)
Total deferred tax liabilities	(4,327)	(3,938)
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