Schedule III: Real Estate and Accumulated Depreciation - Rollforward of Real Estate and Accumulated Deprecation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
REAL ESTATE:
Balance at beginning of period	$ 1,066,620	$ 1,084,598	$ 1,069,426
Changes during the period	1,087,439	1,088,903	1,084,621
Assets sold	0	(14,186)	0
Assets written-off	(2,242)	(8,097)	(23)
Balance at end of period	1,085,197	1,066,620	1,084,598
ACCUMULATED DEPRECIATION:
Balance at beginning of period	415,903	396,268	370,557
Depreciation expense	29,966	28,137	25,734
Subtotal of accumulated depreciation	445,869	424,405	396,291
Accumulated depreciation on assets sold	0	(405)	0
Accumulated depreciation on assets written-off	(2,242)	(8,097)	(23)
Balance at end of period	443,627	415,903	396,268
Land
REAL ESTATE:
Changes during the period	0	0	0
Buildings and leasehold improvements
REAL ESTATE:
Changes during the period	8,242	2,959	15,002
Development and construction in progress
REAL ESTATE:
Changes during the period	$ 12,577	$ 1,346	$ 193