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Shareholders' Equity (Details) - USD ($)
12 Months Ended 69 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Oct. 15, 2021
Nov. 30, 2020
Mar. 31, 2017
Subsidiary, Sale of Stock [Line Items]            
Deferred compensation paid to participants     $ 6,100,000      
Authorized repurchase amount $ 40,000,000   40,000,000   $ 20,000,000  
Number of shares repurchased (in shares) 0 106,744        
Average price (in dollars per share)   $ 37.81        
Value of repurchased shares   $ 4,000,000        
Carolina Bank            
Subsidiary, Sale of Stock [Line Items]            
Deferred compensation plan $ 1,600,000 $ 1,800,000 $ 1,600,000     $ 7,700,000
Select            
Subsidiary, Sale of Stock [Line Items]            
Deferred compensation, value of stock       $ 5,100,000