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Accumulated Other Comprehensive Income (Loss) (Tables)
9 Months Ended
Sep. 30, 2016
Stockholders' Equity Note [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)

   Gross
Unrealized
Gains on
Available-for-
Sale Securities
   Net Unrealized Loss
for Unfunded
Status of Split-
Dollar Life
Insurance Plan
Liability (tax-free)
   Gross Unrealized
Loss for
Unfunded Status
of Defined
Benefit Plan
   Tax Effect   Total Accumulated
Other Comprehensive
Income (Loss)
 
   (In thousands) 
September 30, 2016  $1,144   $(89)  $(1,083)  $(21)  $(49)
                          
December 31, 2015  $777   $(89)  $(1,083)  $104   $(291)