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Employee benefit plans (Tables)
6 Months Ended
Jun. 30, 2016
Employee benefit plans  
Components of Net Periodic Benefit Cost

 

 

 

 

 

 

 

 

 

 

Pension Benefits

 

Three Months Ended June 30, 

    

2016

    

2015

    

Components of net periodic pension cost:

    

 

 

    

 

 

 

Service cost

 

$

166

 

$

174

 

Interest cost

 

 

(223)

 

 

(233)

 

Amortization of unrecognized net gain

 

 

52

 

 

50

 

Net periodic other benefit cost

 

$

(5)

 

$

(9)

 

 

 

 

 

 

 

 

 

 

 

Pension Benefits

 

Six Months Ended June 30, 

    

2016

    

2015

    

Components of net periodic pension cost:

    

 

 

    

 

 

 

Service cost

 

$

333

 

$

348

 

Interest cost

 

 

(447)

 

 

(466)

 

Amortization of unrecognized net gain

 

 

104

 

 

100

 

Net periodic other benefit cost

 

$

(10)

 

$

(18)