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Business, Basis of Presentation and Summary of Significant Accounting Policies - Acquisition (Details) - USD ($)
May 12, 2021
Dec. 31, 2021
Dec. 31, 2020
Class of Stock [Line Items]      
Goodwill   $ 19,506,000 $ 19,506,000
First Mortgage Company (FMC)      
Class of Stock [Line Items]      
Cash paid $ 1,000,000    
Fair value of mortgage servicing rights acquired 500,000    
Premium 500,000    
Liabilities assumed 0    
Indefinite-lived intangible assets acquired 500,000    
Goodwill $ 0