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Mortgage Servicing Rights (Tables)
9 Months Ended
Sep. 30, 2022
Mortgage Servicing Rights Abstract  
Schedule of mortgage servicing rights capitalized and related amortization
   Three Months Ended
September 30,
   Nine Months Ended
September 30,
 
($ in thousands)  2022   2021   2022   2021 
                 
Balance at beginning of period  $13,408   $10,678   $12,034   $7,759 
Mortgage servicing rights capitalized during the period   396    1,211    1,684    3,658 
Mortgage servicing rights amortization during the period   (396)   (943)   (1,439)   (3,078)
Net change in valuation allowance   65    248    1,194    2,855 
Balance at end of period  $13,473   $11,194   $13,473   $11,194 
                     
Valuation allowance:                    
Balance at beginning of period  $327   $2,285   $1,456   $4,892 
Increase (decrease)   (65)   (248)   (1,194)   (2,855)
Balance at end of period  $262   $2,037   $262   $2,037 
                     
Fair value, beginning of period  $15,135   $11,067   $12,629   $7,759 
Fair value, end of period  $15,460   $11,241   $15,460   $11,241