INVESTMENT IN UNCONSOLIDATED AND CONSOLIDATED JOINT VENTURES - Condensed Statements of Operations and Balance Sheet Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Statement of Operations
Non-cash tenant allowance amortization	$ 300	$ 300	$ 600	$ 600
Balance Sheet Information
Assets	548,305		548,305			$ 546,036
Equity	464,309	449,758	464,309	449,758	$ 462,882	456,511	$ 446,148	$ 445,331
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Statement of Operations
Revenues	53,692	38,922	96,466	66,852
Earnings (Loss)	2,674	2,224	4,714	2,057
Equity in Earnings (Loss)	1,663	1,365	2,876	1,306
Balance Sheet Information
Assets	267,306		267,306			263,667
Debt	(153,750)		(153,750)			(141,917)
Equity	103,695		103,695			110,034
TRC equity	38,632		38,632			43,418
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Petro Travel Plaza Holdings, LLC
Statement of Operations
Revenues	49,469	34,496	87,797	58,317
Earnings (Loss)	3,256	2,537	5,190	2,780
Equity in Earnings (Loss)	1,953	1,522	3,114	1,668
Balance Sheet Information
Assets	85,290		85,290			78,064
Debt	(14,466)		(14,466)			(14,848)
Equity	64,050		64,050			58,859
TRC equity	26,029		26,029			22,915
Equity Method Investment, Nonconsolidated Investee or Group of Investees | 18-19 West, LLC
Statement of Operations
Revenues	0	252	0	254
Earnings (Loss)	(47)	216	(47)	181
Equity in Earnings (Loss)	(24)	107	(24)	90
Balance Sheet Information
Assets	384		384			14,965
Debt	0		0			0
Equity	384		384			14,895
TRC equity	0		0			6,877
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRCC/Rock Outlet Center, LLC
Statement of Operations
Revenues	1,376	1,401	2,940	2,676
Earnings (Loss)	(964)	(730)	(1,378)	(1,419)
Equity in Earnings (Loss)	(482)	(365)	(689)	(709)
Balance Sheet Information
Assets	60,028		60,028			61,927
Debt	(28,249)		(28,249)			(28,783)
Equity	30,945		30,945			32,323
TRC equity	7,409		7,409			8,098
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 1, LLC
Statement of Operations
Revenues	801	795	1,640	1,642
Earnings (Loss)	(25)	10	(6)	97
Equity in Earnings (Loss)	(12)	5	(3)	48
Balance Sheet Information
Assets	24,454		24,454			24,964
Debt	(23,097)		(23,097)			(23,400)
Equity	993		993			1,209
TRC equity	0		0			0
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 2, LLC
Statement of Operations
Revenues	1,031	1,004	2,056	2,019
Earnings (Loss)	338	309	682	645
Equity in Earnings (Loss)	169	155	341	323
Balance Sheet Information
Assets	20,720		20,720			20,497
Debt	(22,937)		(22,937)			(23,255)
Equity	(2,834)		(2,834)			(5,657)
TRC equity	0		0			0
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 3, LLC
Statement of Operations
Revenues	1,015	974	2,033	1,944
Earnings (Loss)	126	(118)	284	(227)
Equity in Earnings (Loss)	63	(59)	142	(114)
Balance Sheet Information
Assets	36,929		36,929			37,579
Debt	(34,913)		(34,913)			(35,324)
Equity	827		827			(914)
TRC equity	531		531			859
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 4 LLC
Statement of Operations
Revenues	0	0	0	0
Earnings (Loss)	(10)	0	(11)	0
Equity in Earnings (Loss)	(4)	0	(5)	0
Balance Sheet Information
Assets	39,501		39,501			25,671
Debt	(30,088)		(30,088)			(16,307)
Equity	9,330		9,330			9,319
TRC equity	4,663		4,663			4,669
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Centennial
Statement of Operations
Revenues	203	122	324	251
Earnings (Loss)	78	$ (22)	175	$ 89
Balance Sheet Information
Assets	102,033		102,033			101,178
Debt	0		0			0
Equity	$ 101,835		$ 101,835			$ 100,261