Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Disclosure Of Other Comprehensive Income Loss [Abstract]
Net amortization of bond premiums	$ 146	$ 222	$ 431	$ 712
Tax effect	(39)	(60)	(116)	(191)
Net income (loss)	107	162	315	521
Gain on termination of interest rate swaps				(849)
Net interest expense on swaps	(21)		(21)
Tax effect	6		6
Net income (loss)	(15)		(15)
Tax effect				230
Net income (loss)				(619)
Total reclassification adjustments	$ 92	$ 162	$ 300	$ (98)