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Goodwill and Other Intangible Assets - Schedule of Changes in Goodwill (Detail) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Goodwill [Roll Forward]    
Goodwill, beginning balance $ 1,931,000 $ 1,931,000
Goodwill arising from acquisitions and adjustments 65,664,000  
Goodwill impairment 0 0
Goodwill, ending balance $ 67,595,000 $ 1,931,000