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Pension and Post-retirement Benefits (Tables)
 3 Months Ended
Dec. 31, 2015
Pension and Post-retirement Benefits  
Schedule of components of net periodic pension and postretirement benefit cost

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended December 31, 

 

 

 

Pension Benefits

 

Other Benefits

 

 

    

2014

    

2015

    

2014

    

2015

    

Service cost

 

$
975

 

$
1,020

 

$
84

 

$
58

 

Interest cost

 

 
2,641

 

 
2,848

 

 
1,096

 

 
1,149

 

Expected return

 

 
(3,563)

 

 
(3,376)

 

 

 —

 

 

 —

 

Amortizations

 

 
1,361

 

 
2,381

 

 
609

 

 
706

 

Net periodic benefit cost

 

$
1,414

 

$
2,873

 

$
1,789

 

$
1,913