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Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Finite-lived Intangible Assets [Roll Forward]        
Balance, beginning of period $ 14,550      
Acquisition of PFG 2,497      
Balance, gross core deposit intangible 17,047      
Finite Lived Intangible Assets Accumulated Amortization [Abstract]        
Gross Carrying Amount 17,047 $ 17,047 $ 14,550 $ 14,550
Less: accumulated amortization   (4,711) (2,971)  
Total   12,336 11,579  
Core Deposits [Member]        
Finite-lived Intangible Assets [Roll Forward]        
Balance, beginning of period 14,550      
Acquisition of PFG 1,370      
Balance, gross core deposit intangible 15,920      
Finite Lived Intangible Assets Accumulated Amortization [Abstract]        
Gross Carrying Amount 15,920 15,920 14,550 $ 14,550
Less: accumulated amortization   (4,540) (2,971)  
Total   11,380 $ 11,579  
Customer Relationships [Member]        
Finite-lived Intangible Assets [Roll Forward]        
Acquisition of PFG 1,064      
Balance, gross core deposit intangible 1,064      
Finite Lived Intangible Assets Accumulated Amortization [Abstract]        
Gross Carrying Amount 1,064 1,064    
Less: accumulated amortization   (161)    
Total   903    
Trade Names [Member]        
Finite-lived Intangible Assets [Roll Forward]        
Acquisition of PFG 63      
Balance, gross core deposit intangible 63      
Finite Lived Intangible Assets Accumulated Amortization [Abstract]        
Gross Carrying Amount $ 63 63    
Less: accumulated amortization   (10)    
Total   $ 53