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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Stock Transactions, Parenthetical Disclosures [Abstract]      
Repurchase of common stock (in shares) 290,486    
Cash dividends $ 0.60 $ 0.60 $ 12.48
Issuance of common stock (in shares)     9,429,794
Issuance of common stock upon vesting of restricted stock units (in shares) 20,225    
Cancelation of treasury stock (in shares)     124,228
NXT Bancorporation, Inc      
Stock Transactions, Parenthetical Disclosures [Abstract]      
Issuance of common stock (in shares) 1,799,016