v3.25.4
Business Combinations - Summary of the Amounts of Assets Acquired and Liabilities Assumed Recognized at the Merger/Acquisition Date (Detail) - USD ($)
$ in Thousands
Jul. 02, 2025
Jul. 01, 2024
Feb. 09, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Goodwill       $ 82,101 $ 53,101 $ 53,101
NBC Corp [Member]            
Fair value of consideration:            
Fair value of consideration $ 89,008          
Common Stock 73,741          
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Cash and due from banks 165,698          
Interest bearing time deposits in other banks 566          
Loans 661,513          
Premises and equipment 12,939          
Bank-owned life insurance 11,860          
Core deposit intangible 11,168          
Other assets 14,590          
Total assets acquired 895,372          
Deposits 806,007          
Federal funds purchased and retail repurchase agreements 4,542          
Federal Home Loan Advances 3,534          
Interest payable and other liabilities 21,281          
Total liabilities assumed 835,364          
Total identifiable net assets 60,008          
Goodwill 29,000          
Total 89,008          
NBC Corp [Member] | Available for Sale Securities [Member]            
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Available-for-sale securities 17,038          
NBC Corp [Member] | Cash [Member]            
Fair value of consideration:            
Fair value of consideration $ 15,267          
Bank Of Kirksville [Member]            
Fair value of consideration:            
Fair value of consideration     $ 44,304      
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Cash and due from banks     105,218      
Loans     118,131      
Premises and equipment     3,473      
Core deposit intangible     11,530      
Other assets     3,255      
Total assets acquired     406,236      
Deposits     349,777      
Federal funds purchased and retail repurchase agreements     8,818      
Interest payable and other liabilities     2,037      
Total liabilities assumed     360,632      
Total identifiable net assets     45,604      
Bargain purchase gain     $ (1,300)      
Business Combination, Bargain Purchase, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]     Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain (Loss)      
Bank Of Kirksville [Member] | Available for Sale Securities [Member]            
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Available-for-sale securities     $ 164,629      
Bank Of Kirksville [Member] | Cash [Member]            
Fair value of consideration:            
Fair value of consideration     $ 44,304      
KansasLand Bank [Member]            
Fair value of consideration:            
Fair value of consideration   $ 100        
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Cash and due from banks   1,361        
Loans   27,926        
Premises and equipment   372        
Core deposit intangible   506        
Other assets   1,764        
Total assets acquired   51,933        
Deposits   42,418        
Federal funds purchased and retail repurchase agreements   780        
Federal Home Loan Bank advances   7,049        
Bank stock loan   691        
Interest payable and other liabilities   64        
Total liabilities assumed   51,002        
Total identifiable net assets   931        
Bargain purchase gain   $ (831)        
Business Combination, Bargain Purchase, Gain, Statement of Income or Comprehensive Income [Extensible Enumeration]   Business Combination, Achieved in Stages, Preacquisition Equity Interest in Acquiree, Remeasurement, Gain (Loss)        
KansasLand Bank [Member] | Available for Sale Securities [Member]            
Recognized amounts of identifiable assets acquired and liabilities assumed:            
Available-for-sale securities   $ 20,004        
KansasLand Bank [Member] | Cash [Member]            
Fair value of consideration:            
Fair value of consideration   $ 100