Schedule of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule of Other Assets [Line Items]
Intangible assets, less accumulated amortization of $2,307 and $2,435, respectively	$ 7,173	$ 7,724
Financing receivable - Kansas lease	$ 138,989	$ 142,214
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
ROU lease assets	$ 119,773	$ 145,539
Lease incentive assets	0	3,529
Debt issuance costs for revolving credit facility, less accumulated amortization of $180 and $765, respectively	3,397	3,343
Cash equivalents and cash surrender value of life insurance held in Rabbi trust	16,545	15,988
Straight-line rent receivable	1,854	2,378
Insurance receivable	15,966	14,144
Note receivable from APM	2,886	2,741
Other	2,975	4,376
Other assets, total	$ 309,558	$ 341,976