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PENSION AND OTHER POSTRETIREMENT BENEFITS
3 Months Ended
Mar. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
PENSION AND OTHER POSTRETIREMENT BENEFITS
PENSION AND OTHER POSTRETIREMENT BENEFITS:

For the three months ended March 31, 2015 and 2014, net periodic benefit cost related to the employee and officer pension and other postretirement benefit plans consisted of the following components (in thousands):
 
Pension Benefits
 
Three Months Ended
March 31,
 
2015

2014
Service Cost
$
1,443

 
$
1,285

Interest Cost
2,770

 
2,695

Expected Return on Plan Assets
(3,699
)
 
(3,265
)
Amortizations:
 
 
 

Prior Service Cost
53

 
43

Actuarial Loss
2,656

 
1,426

Net Periodic Benefit Cost
3,223

 
2,184

Capitalized Benefit Costs
(1,239
)
 
(854
)
Total Net Periodic Benefit Expense
$
1,984

 
$
1,330


 
Other Postretirement Benefits
 
Three Months Ended
March 31,
 
2015

2014
Service Cost
$
327

 
$
250

Interest Cost
771

 
740

Expected Return on Plan Assets
(748
)
 
(687
)
Amortizations:
 
 
 

Prior Service Cost
152

 
38

Actuarial Loss
384

 
243

Net Periodic Benefit Cost
886

 
584

Capitalized Benefit Costs
(256
)
 
(209
)
Total Net Periodic Benefit Expense
$
630

 
$
375


Capitalized benefit costs reflected in the table above relate to SJG’s construction program.

SJI contributed $15.0 million to the pension plans in January 2015. No contributions were made to the pension plans during 2014. Payments related to the unfunded supplemental executive retirement plan (SERP) are expected to approximate $1.5 million in 2015. SJG also has a regulatory obligation to contribute approximately $3.6 million annually to the other postretirement benefit plans’ trusts, less direct costs incurred. See Note 12 to the Consolidated Financial Statements in Item 8 of SJI’s Annual Report on Form 10-K for the year ended December 31, 2014, for additional information related to SJI’s pension and other postretirement benefits.