Investment in Unconsolidated and Consolidated Joint Ventures - Condensed Statements of Operations and Balance Sheet Information (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2021	Apr. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Information
Assets			$ 546,036	$ 536,349	$ 539,422
Equity			456,511	445,331	445,624	$ 434,672
TRCC/Rock Outlet Center, LLC
Balance Sheet Information
Non-cash tenant allowance amortization			1,200	1,300	1,700
TRC-MRC 3, LLC
Balance Sheet Information
Earnings(Loss)		$ 1,500
TRC-MRC 4, LLC
Balance Sheet Information
Earnings(Loss)	$ 2,785
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Balance Sheet Information
Assets			263,667	232,919
Borrowings			(141,917)	(133,775)
Equity			110,034	86,005
Investment In			43,418	33,524
Revenues			169,194	103,074	133,739
Earnings(Loss)			16,752	7,099	30,213
Equity in Earnings (Loss)			9,202	4,504	16,575
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Petro Travel Plaza Holdings LLC
Balance Sheet Information
Assets			78,064	77,516
Borrowings			(14,848)	(15,291)
Equity			58,859	59,597
Investment In			22,915	23,358
Revenues			137,090	86,331	117,708
Earnings(Loss)			8,262	9,536	14,684
Equity in Earnings (Loss)			4,957	5,722	8,810
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Five West Parcel, LLC
Balance Sheet Information
Assets			0	0
Borrowings			0	0
Equity			0	0
Investment In			0	0
Revenues			0	0	2,648
Earnings(Loss)			0	(6)	18,239
Equity in Earnings (Loss)			0	(2)	9,119
Equity Method Investment, Nonconsolidated Investee or Group of Investees | 18-19 West, LLC
Balance Sheet Information
Assets			14,965	4,733
Borrowings			0	0
Equity			14,895	4,483
Investment In			6,877	1,672
Revenues			15,472	6	15
Earnings(Loss)			10,411	(136)	(107)
Equity in Earnings (Loss)			5,206	(68)	(53)
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRCC/Rock Outlet Center, LLC
Balance Sheet Information
Assets			61,927	65,475
Borrowings			(28,783)	(34,845)
Equity			32,323	29,608
Investment In			8,098	6,741
Revenues			5,642	5,495	6,278
Earnings(Loss)			(2,885)	(4,180)	(3,843)
Equity in Earnings (Loss)			(1,443)	(2,090)	(1,921)
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 1, LLC
Balance Sheet Information
Assets			24,964	26,502
Borrowings			(23,400)	(23,985)
Equity			1,209	2,059
Investment In			0	0
Revenues			3,237	3,123	3,067
Earnings(Loss)			(15)	129	91
Equity in Earnings (Loss)			(7)	64	46
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 2, LLC
Balance Sheet Information
Assets			20,497	20,191
Borrowings			(23,255)	(23,869)
Equity			(5,657)	(7,741)
Investment In			0	0
Revenues			4,024	4,087	4,023
Earnings(Loss)			1,268	1,357	1,151
Equity in Earnings (Loss)			634	678	575
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 3, LLC
Balance Sheet Information
Assets			37,579	38,502
Borrowings			(35,324)	(35,785)
Equity			(914)	(2,001)
Investment In			859	1,753
Revenues			3,729	4,032	0
Earnings(Loss)			(288)	399	(2)
Equity in Earnings (Loss)			(144)	200	(1)
Equity Method Investment, Nonconsolidated Investee or Group of Investees | TRC-MRC 4, LLC
Balance Sheet Information
Assets			25,671	0
Borrowings			(16,307)	0
Equity			9,319	0
Investment In			4,669	0
Revenues			0	0	0
Earnings(Loss)			(1)	0	0
Equity in Earnings (Loss)			(1)	0	0
Equity Method Investment, Nonconsolidated Investee or Group of Investees | Centennial Founders, LLC
Balance Sheet Information
Assets			101,178	98,898
Borrowings			0	0
Equity			100,261	98,565
Revenues			409	419	469
Earnings(Loss)			$ (80)	$ (103)	$ (20)