FEDERAL AND STATE CURRENT AND DEFERRED INCOME TAX - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses, capital losses, and tax credit carryforwards	$ 57,901	$ 60,318
Impairment loss on water assets	9,864	10,384
Employee benefits, including stock-based compensation	556	682
Excess tax basis in affiliate	475	496
Fixed assets	700	739
Other, net	450	761
Total deferred tax assets	69,946	73,380
Deferred tax liabilities:
Revaluation of real estate and water assets	2,072	2,978
Other, net	449	508
Total deferred tax liabilities	2,521	3,486
Valuation allowance	(58,085)	(69,894)
Net deferred income tax asset	$ 9,340	$ 0