Employee Benefits Plan (Tables)
 9 Months Ended
Sep. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Schedule of net periodic benefit cost and other comprehensive income

Components of Net Periodic Benefit (Income) Cost

 

    Pension Benefits     Life and Health     SERP Benefits  
    Three Months Ended     Three Months Ended     Three Months Ended  
(in thousands)   09/30/2016     09/30/2015     09/30/2016     09/30/2015     09/30/2016     09/30/2015  
Service cost   $ 0     $ 22     $ 64     $ 59     $ 43     $ 50  
Interest cost     618       145       71       81       208       232  
Expected return on plan assets     (1,211 )     (240 )     0       0       0       0  
Amortization of net retirement plan actuarial loss     244       41       1       5       90       156  
Amortization of net retirement plan prior service (credit) cost     (4 )     (3 )     4       4       19       18  
Net periodic benefit (income) cost   $ (353 )   $ (35 )   $ 140     $ 149     $ 360     $ 456  

 

Components of Net Period Benefit (Income) Cost

 

    Pension Benefits     Life and Health     SERP Benefits  
    Nine Months Ended     Nine Months Ended     Nine Months Ended  
(in thousands)   09/30/2016     09/30/2015     09/30/2016     09/30/2015     09/30/2016     09/30/2015  
Service cost   $ 0     $ 1,394     $ 193     $ 177     $ 128     $ 150  
Interest cost     1,855       1,610       212       242       624       696  
Expected return on plan assets     (3,633 )     (2,748 )     0       0       0       0  
Amortization of net retirement plan actuarial loss     731       1,180       4       14       269       469  
Amortization of net retirement plan prior service cost (credit)     (11 )     (417 )     12       12       56       54  
Recognized actuarial gain due to curtailments     0       (6,003 )     0       0       0       0  
Net periodic benefit (income) cost   $ (1,058 )   $ (4,984 )   $ 421     $ 445     $ 1,077     $ 1,369