INVESTMENT IN UNCONSOLIDATED AND CONSOLIDATED JOINT VENTURES - Condensed Statements of Operations and Balance Sheet Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021	Dec. 31, 2020
Statement of Operations
Equity in Earnings (Loss)	$ 1,991	$ 1,510	$ 4,867	$ 2,816
Non-cash tenant allowance amortization	300	300	900	900
Balance Sheet Information
Assets	561,885		561,885			$ 546,036
Equity (Deficit)	475,529	451,449	475,529	451,449	$ 464,309	456,511	$ 449,758	$ 445,331
TRC equity	38,605		38,605			43,418
Petro Travel Plaza Holdings, LLC
Statement of Operations
Equity in Earnings (Loss)	2,192	1,785	5,306	3,453
Balance Sheet Information
TRC equity	26,421		26,421			22,915
18-19 West, LLC
Statement of Operations
Equity in Earnings (Loss)	(7)	(15)	(31)	75
Balance Sheet Information
TRC equity	0		0			6,877
TRCC/Rock Outlet Center, LLC
Statement of Operations
Equity in Earnings (Loss)	(472)	(383)	(1,161)	(1,092)
Balance Sheet Information
TRC equity	6,937		6,937			8,098
TRC-MRC 1, LLC
Statement of Operations
Equity in Earnings (Loss)	29	19	26	67
Balance Sheet Information
TRC equity	0		0			0
TRC-MRC 2, LLC
Statement of Operations
Equity in Earnings (Loss)	171	152	512	475
Balance Sheet Information
TRC equity	0		0			0
TRC-MRC 3, LLC
Statement of Operations
Equity in Earnings (Loss)	78	(47)	220	(161)
Balance Sheet Information
TRC equity	409		409			859
TRC-MRC 4, LLC
Statement of Operations
Equity in Earnings (Loss)	0	(1)	(5)	(1)
Balance Sheet Information
TRC equity	4,663		4,663			4,669
TRC-MRC Multi I, LLC
Balance Sheet Information
TRC equity	175		175			0
Petro Travel Plaza Holdings, LLC
Statement of Operations
Revenues	49,108	39,266	136,905	97,583
Earnings (Loss)	3,653	2,976	8,843	5,756
Balance Sheet Information
Assets	85,006		85,006			78,064
Debt	(13,509)		(13,509)			(14,848)
Equity (Deficit)	64,703		64,703			58,859
18-19 West, LLC
Statement of Operations
Revenues	0	2	0	256
Earnings (Loss)	(16)	(31)	(63)	150
Balance Sheet Information
Assets	0		0			14,965
Debt	0		0			0
Equity (Deficit)	0		0			14,895
TRCC/Rock Outlet Center, LLC
Statement of Operations
Revenues	1,415	1,464	4,355	4,140
Earnings (Loss)	(944)	(764)	(2,322)	(2,183)
Balance Sheet Information
Assets	58,848		58,848			61,927
Debt	(27,982)		(27,982)			(28,783)
Equity (Deficit)	30,001		30,001			32,323
TRC-MRC 1, LLC
Statement of Operations
Revenues	805	796	2,445	2,438
Earnings (Loss)	60	36	54	133
Balance Sheet Information
Assets	24,469		24,469			24,964
Debt	(22,943)		(22,943)			(23,400)
Equity (Deficit)	1,052		1,052			1,209
TRC-MRC 2, LLC
Statement of Operations
Revenues	1,008	1,005	3,064	3,024
Earnings (Loss)	342	305	1,024	950
Balance Sheet Information
Assets	18,557		18,557			20,497
Debt	(22,776)		(22,776)			(23,255)
Equity (Deficit)	(3,971)		(3,971)			(5,657)
TRC-MRC 3, LLC
Statement of Operations
Revenues	1,065	771	3,098	2,715
Earnings (Loss)	156	(96)	440	(323)
Balance Sheet Information
Assets	36,856		36,856			37,579
Debt	(34,705)		(34,705)			(35,324)
Equity (Deficit)	(2,885)		(2,885)			(914)
TRC-MRC 4, LLC
Statement of Operations
Revenues	0	0	0	0
Earnings (Loss)	0	(1)	(11)	(1)
Balance Sheet Information
Assets	45,219		45,219			25,671
Debt	(35,752)		(35,752)			(16,307)
Equity (Deficit)	9,330		9,330			9,319
Total
Statement of Operations
Revenues	53,401	43,304	149,867	110,156
Earnings (Loss)	3,251	2,425	7,965	4,482
Balance Sheet Information
Assets	269,305		269,305			263,667
Debt	(157,667)		(157,667)			(141,917)
Equity (Deficit)	98,580		98,580			110,034
Centennial
Statement of Operations
Revenues	55	126	379	377
Earnings (Loss)	(157)	$ (80)	18	$ 9
Balance Sheet Information
Assets	102,385		102,385			101,178
Debt	0		0			0
Equity (Deficit)	101,979		101,979			100,261
TRC-MRC Multi I, LLC
Balance Sheet Information
Assets	350		350			0
Debt	0		0			0
Equity (Deficit)	$ 350		$ 350			$ 0