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Mortgage Banking and Servicing Rights (Tables)
12 Months Ended
Dec. 31, 2020
Mortgage Servicing Rights [Abstract]  
Schedule of mortgage servicing rights capitalized and related amortization, along with activity in the related valuation allowance
($ in thousands)  2020   2019 
Carrying amount, beginning of year  $11,017   $11,365 
Mortgage servicing rights capitalized during the year   5,090    2,872 
Mortgage servicing rights amortization during the year   (4,762)   (2,126)
Net change in valuation allowance   (3,586)   (1,094)
Carrying amount, end of year  $7,759   $11,017 
           
Valuation allowance:          
Beginning of year  $1,306   $212 
Increase (reduction)   3,586    1,094 
End of year  $4,892   $1,306 
           
Fair value, beginning of period  $11,864   $12,672 
Fair value, end of period  $7,759   $11,864