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Mortgage Servicing Rights (Tables)
6 Months Ended
Jun. 30, 2020
Mortgage Servicing Rights [Abstract]  
Summarizes mortgage servicing rights capitalized and related amortization
($ in thousands)  2020   2019 
         
Carrying amount, January 1  $11,017   $11,365 
Mortgage servicing rights capitalized during the year   2,622    1,011 
Mortgage servicing rights amortization during the year   (2,171)   (714)
Net change in valuation allowance   (3,300)   (1,398)
Carrying amount, June 30  $8,168   $10,264 
           
Valuation allowance:          
January 1  $1,306   $212 
Increase   3,300    1,398 
           
June 30  $4,606   $1,610