Leases - Additional Information (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($) State Property	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)	Jan. 01, 2019 USD ($)
Leases [Line Items]
Number of properties in portfolio | Property	1,108
Number of states in which our properties are located | State	42
Revenues from rental properties	$ 47,215	$ 42,367
Rental income contractually due from tenants in revenues from rental properties included in continuing operations	43,900	38,800
Revenue non-cash adjustments included in revenues from rental properties in continuing operations	300	(300)
Real Estate Taxes and other municipal charges paid then reimbursed by tenants included in revenues and expenses	2,800	$ 3,600
Operating lease liabilities	15,424		$ 16,051
Operating lease right of use assets	14,000		14,571
Accounting Standards Update 2016-02 [Member]
Leases [Line Items]
Operating lease liabilities				$ 26,100
Operating lease right of use assets				$ 25,600
Accounting Standards Update 2016-13 [Member]
Leases [Line Items]
Net Investment in direct financing lease, additional allowance for credit losses	$ 800		$ 800
Third Party Landlords [Member]
Leases [Line Items]
Number of properties leased | Property	37
Owned Properties [Member]
Leases [Line Items]
Number of properties | Property	1,071