SEGMENTS - Income by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Rental	$ 193,611	$ 172,812	$ 154,721
Restaurant	29,583	26,566	16,223
Total revenues	223,194	199,378	170,944
Operating expenses:
General and administrative	20,043	17,650	15,046
Depreciation and amortization	41,471	34,826	29,433
Total operating expenses	97,325	82,079	64,069
Interest expense	(36,405)	(32,555)	(29,231)
Other income, net	542	36	170
Realized gain on sale, net	8,139	431	0
Income tax (expense) benefit	(237)	534	(247)
Net income	97,908	85,745	77,567
Restaurant
Revenues:
Restaurant	29,583	26,566	16,223
Operating expenses:
Expenses	27,822	24,563	16,082
Property
Operating expenses:
Expenses	7,989	5,040	3,508
Real Estate Operations
Revenues:
Rental	193,611	172,812	154,721
Restaurant Operations
Revenues:
Rental	0	0	0
Operating Segments | Real Estate Operations
Revenues:
Total revenues	194,457	173,555	155,267
Operating expenses:
General and administrative	20,043	17,650	15,046
Depreciation and amortization	40,762	34,162	28,944
Total operating expenses	68,794	56,852	47,498
Interest expense	(36,405)	(32,555)	(29,231)
Other income, net	542	36	170
Realized gain on sale, net	8,139	431	0
Income tax (expense) benefit	(206)	(174)	(165)
Net income	97,733	84,441	78,543
Operating Segments | Real Estate Operations | Restaurant
Revenues:
Restaurant	0	0	0
Operating expenses:
Expenses	0	0	0
Operating Segments | Real Estate Operations | Property
Operating expenses:
Expenses	7,989	5,040	3,508
Operating Segments | Restaurant Operations
Revenues:
Total revenues	29,583	26,566	16,223
Operating expenses:
General and administrative	0	0	0
Depreciation and amortization	709	664	489
Total operating expenses	29,377	25,970	17,117
Interest expense	0	0	0
Other income, net	0	0	0
Realized gain on sale, net	0	0	0
Income tax (expense) benefit	(31)	708	(82)
Net income	175	1,304	(976)
Operating Segments | Restaurant Operations | Restaurant
Revenues:
Restaurant	29,583	26,566	16,223
Operating expenses:
Expenses	28,668	25,306	16,628
Operating Segments | Restaurant Operations | Property
Operating expenses:
Expenses	0	0	0
Intercompany
Revenues:
Rental	846	743	546
Total revenues	(846)	(743)	(546)
Operating expenses:
General and administrative	0	0	0
Depreciation and amortization	0	0	0
Total operating expenses	(846)	(743)	(546)
Interest expense	0	0	0
Other income, net	0	0	0
Realized gain on sale, net	0	0	0
Income tax (expense) benefit	0	0	0
Net income	0	0	0
Intercompany | Restaurant
Operating expenses:
Expenses	(846)	(743)	(546)
Intercompany | Property
Operating expenses:
Expenses	0	0	0
Intercompany | Real Estate Operations
Revenues:
Rental	$ 846	$ 743	$ 546