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Related Party Transactions - The Cayman Bank Acquisition (Details) - USD ($)
$ in Thousands
Nov. 20, 2019
Dec. 31, 2021
Dec. 31, 2020
Business Combination, Separately Recognized Transactions [Line Items]      
Goodwill   $ 19,506 $ 19,506
Cayman Bank      
Business Combination, Separately Recognized Transactions [Line Items]      
Cash paid $ 15,000    
Premium 885    
Cash and due from banks 600    
Available for sale securities 27,900    
Time deposits 14,400    
Goodwill 300    
Identifiable intangible assets $ 500    
Cayman Bank | Customer Relationships      
Business Combination, Separately Recognized Transactions [Line Items]      
Identifiable intangible assets, useful life 14 years