INCOME TAXES - Deferred Taxes (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Reconciliation of the income tax computed at federal statutory rates to the income tax provision reported
Income from continuing operations before income taxes for TRSs	$ 2,067,000	$ 381,134,000	$ 32,358,000
Income tax provision	925,000	1,376,000	1,646,000
Deferred tax liabilities:
Reserve for uncertain tax positions	0	0
TRS
Reconciliation of the income tax computed at federal statutory rates to the income tax provision reported
Income from continuing operations before income taxes for TRSs	4,962,000	4,878,000	5,684,000
Expected federal income tax provision	1,042,000	1,658,000	1,933,000
State income taxes	35,000	27,000	21,000
Change in valuation allowance	0	(37,000)	(1,443,000)
Other	(152,000)	(272,000)	1,135,000
Income tax provision	925,000	1,376,000	$ 1,646,000
Deferred tax assets:
Net operating losses	37,000	39,000
Secured borrowings—government guaranteed loans	198,000	308,000
Other	185,000	111,000
Total gross deferred tax assets	420,000	458,000
Valuation allowance	(38,000)	(26,000)
Deferred tax asset, net of valuation allowance	382,000	432,000
Deferred tax liabilities:
Loans receivable	(255,000)	(333,000)
Deferred tax liabilities	(255,000)	(333,000)
Deferred tax asset, net	$ 127,000	$ 99,000