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BENEFIT PLANS: (Tables)
 3 Months Ended
Mar. 31, 2016
Post retirement defined benefit plans  
Components of net periodic benefit costs  
Schedule of the components of net periodic benefit costs

 

 

The components of net periodic benefit costs for the three months ended March 31, 2016 and 2015 are as follows (in millions):

 

 

 

2016

 

2015

 

Service cost

 

$
0.2

 

$
0.2

 

Interest cost

 
0.2

 
0.2

 

Expected return on plan assets

 
(0.6

)
(0.7

)

Amortization of net actuarial loss

 

(*

)

(*

)

Amortization of net loss/(gain)

 

(*

)

(*

)

 

 

 

 

 

 

Net periodic benefit costs

 

$
(0.2

)

$
(0.3

)

 

 

 

 

 

 

 

 

 

 

(*) amount is lower than $0.1 million

Post-retirement Health care plans  
Components of net periodic benefit costs  
Schedule of the components of net periodic benefit costs

 

The components of net periodic benefit cost for the three months ended March 31, 2016 and 2015 are as follows (in millions):

 

 

 

2016

 

2015

 

Interest cost

 

$
0.2

 

$
0.3

 

Amortization of net loss (gain)

 
(0.1

)
(0.1

)

Amortization of prior service cost (credit)

 

(*

)

(*

)

 

 

 

 

 

 

Net periodic benefit cost

 

$
0.1

 

$
0.2

 

 

 

 

 

 

 

 

 

 

 

(*) amount is lower than $0.1 million