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MORTGAGE SERVICING RIGHTS (Tables)
 9 Months Ended
Sep. 30, 2019
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]  
Balance of loans serviced for others and fair value of mortgage servicing rights
(in thousands)    September 30, 2019      December 31, 2018  
Residential mortgage loans serviced for others  $106,365   $111,378 
Fair value of mortgage servicing rights   765    951 
Changes in mortgage servicing rights
   Three months ended  Nine months ended
Periods ended September 30, (in thousands)  2019  2018  2019  2018
Mortgage Servicing Rights                    
Balance, beginning of period  $209   $217   $228   $233 
Originated   21    11    25    18 
Amortization (1)   (13)   (11)   (36)   (34)
Balance, end of period  $217   $217   $217   $217 
(1)Amortization expense and changes in the impairment reserve are recorded in mortgage servicing, net on the consolidated income statement.