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Employee Benefit Plans - Summary of Change in Benefit Obligation (Detail) - Supplemental Employee Retirement Plan [Member] - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Change in Projected Benefit Obligation    
Benefit obligation at beginning of year $ 7,311,259 $ 8,006,835
Interest cost 375,780 355,194
Actuarial (gain) loss 168,352 (567,611)
Benefits paid (506,208) (483,159)
Benefit obligation at end of year $ 7,349,183 $ 7,311,259