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Loan Servicing (Tables)
 9 Months Ended
Sep. 30, 2017
Transfers and Servicing of Financial Assets [Abstract]  
Activity For MSRs And Related Valuation Allowance
Activity for MSRs and the related valuation allowance follows:
 
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(In thousands)
 
2017
 
2016
 
2017
 
2016
Mortgage servicing rights:
 
 
 
 
 
 
 
 
Carrying amount, net, beginning of period
 
$
9,476

 
$
8,880

 
$
9,266

 
$
9,008

Additions
 
559

 
747

 
1,434

 
1,618

Amortization
 
(448
)
 
(522
)
 
(1,213
)
 
(1,312
)
Changes in valuation allowance
 
(108
)
 
(360
)
 
(8
)
 
(569
)
Carrying amount, net, end of period
 
$
9,479

 
$
8,745

 
$
9,479

 
$
8,745

 
 
 
 
 
 
 
 
 
Valuation allowance:
 
 
 
 
 
 
 
 
Beginning of period
 
$
635

 
$
751

 
$
735

 
$
542

Changes in valuation allowance
 
108

 
360

 
8

 
569

End of period
 
$
743

 
$
1,111

 
$
743

 
$
1,111