v3.26.1
Securities - Summary of Securities Available-for-Sale and Restricted Stock (Detail) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale $ 127,026 $ 137,377
Gross Unrealized Gains, Available-for-sale 55 307
Gross Unrealized Losses, Available-for-sale (6,014) (5,467)
Fair Value, Available-for-sale 121,067 132,217
Amortized Cost, Held-to-maturity 174,421 183,145
Gross Unrealized Gains, Held-to-maturity   32
Gross Unrealized Losses, Held-to-maturity (22,814) (22,125)
Fair Value, Held-to-maturity 151,607 161,052
Amortized Cost 303,282 322,352
Gross Unrealized Gains 190 433
Gross Unrealized Losses (28,828) (27,592)
Fair Value 274,644 295,193
U.S. Treasury Securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 5,008 5,010
Gross Unrealized Gains, Available-for-sale   10
Gross Unrealized Losses, Available-for-sale (26)  
Fair Value, Available-for-sale 4,982 5,020
Amortized Cost, Held-to-maturity 5,411 5,397
Gross Unrealized Losses, Held-to-maturity (322) (321)
Fair Value, Held-to-maturity 5,089 5,076
U.S. Government Agencies [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 3,000 3,000
Gross Unrealized Losses, Available-for-sale (55) (92)
Fair Value, Available-for-sale 2,945 2,908
Mortgage-Backed Securities of Government Agencies [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 92,882 103,198
Gross Unrealized Gains, Available-for-sale 47 290
Gross Unrealized Losses, Available-for-sale (5,211) (4,579)
Fair Value, Available-for-sale 87,718 98,909
Amortized Cost, Held-to-maturity 166,539 175,261
Gross Unrealized Gains, Held-to-maturity   32
Gross Unrealized Losses, Held-to-maturity (22,413) (21,717)
Fair Value, Held-to-maturity 144,126 153,576
Asset-Backed Securities of Government Agencies [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 331 355
Gross Unrealized Losses, Available-for-sale (7) (8)
Fair Value, Available-for-sale 324 347
State and Political Subdivisions [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 11,638 11,660
Gross Unrealized Losses, Available-for-sale (431) (433)
Fair Value, Available-for-sale 11,207 11,227
Amortized Cost, Held-to-maturity 2,471 2,487
Gross Unrealized Losses, Held-to-maturity (79) (87)
Fair Value, Held-to-maturity 2,392 2,400
Corporate Bonds [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Available-for-sale 14,167 14,154
Gross Unrealized Gains, Available-for-sale 8 7
Gross Unrealized Losses, Available-for-sale (284) (355)
Fair Value, Available-for-sale 13,891 13,806
Equity Securities [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost, Equity securities 190 185
Gross Unrealized Gains, Equity securities 135 94
Fair Value, Equity securities 325 279
Restricted Stock [Member]    
Schedule of Trading Securities and Other Trading Assets [Line Items]    
Amortized Cost 1,645 1,645
Fair Value $ 1,645 $ 1,645