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Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Reclassification [Line Items]      
Loans held for investment $ 4,145,247 $ 3,729,418  
Other real estate owned 18,873 18,873 $ 0
Disposition Efforts, Reclassified [Member]      
Reclassification [Line Items]      
Loans held for investment 61,600    
Other real estate owned $ 17,300 $ 17,300