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Accumulated Other Comprehensive Loss (Tables)
6 Months Ended
Jun. 30, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated other comprehensive loss (net of tax) at June 30, 2016 and December 31, 2015 consisted of the following:

 

  June 30,   December 31,
  2016   2015
  (in thousands)
Net unrealized gain on investment securities available-for-sale $      1,905     $           713  
Cash flow hedge   (1,098 )     (77 )
Unamortized component of securities transferred from available-for-sale to held-to-maturity   (1,116 )     (1,173 )
Defined benefit pension and post-retirement plans   (4,012 )     (4,072 )
       Total accumulated other comprehensive loss $ (4,321 )   $ (4,609 )