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Pension Plans and Other Postretirement Employee Benefits
9 Months Ended
Sep. 30, 2012
General Discussion of Pension and Other Postretirement Benefits [Abstract]  
Pension Plans and Other Postretirement Employee Benefits
Pension Plans and Other Postretirement Employee Benefits
The following tables detail the components of net periodic cost (benefit) of our pension plans and other postretirement employee benefits, or OPEB, for the quarters and nine months ended September 30:

Quarters ended September 30:

 
Pension Plans
 
Other Postretirement
Employee Benefits
(Dollars in thousands)
2012
 
2011
 
2012
 
2011
Service cost
$
1,309

 
$
1,114

 
$
71

 
$
112

Interest cost
4,997

 
5,331

 
620

 
871

Expected return on plan assets
(7,188
)
 
(7,951
)
 

 

Amortization of prior service cost (credit)
192

 
171

 
(2,336
)
 
(2,134
)
Amortization of actuarial loss
3,839

 
2,479

 
781

 
992

Net periodic cost (benefit)
$
3,149

 
$
1,144

 
$
(864
)
 
$
(159
)

Nine months ended September 30:

 
Pension Plans
 
Other Postretirement
Employee Benefits
(Dollars in thousands)
2012
 
2011
 
2012
 
2011
Service cost
$
3,928

 
$
3,342

 
$
213

 
$
335

Interest cost
14,990

 
15,994

 
1,859

 
2,614

Expected return on plan assets
(21,566
)
 
(23,853
)
 

 

Amortization of prior service cost (credit)
577

 
513

 
(7,111
)
 
(6,402
)
Amortization of actuarial loss
11,517

 
7,437

 
2,345

 
2,975

Net periodic cost (benefit)
$
9,446

 
$
3,433

 
$
(2,694
)
 
$
(478
)

Our minimum funding requirement for 2012 was $9.7 million. During the first quarter of 2012, we borrowed against our COLI plan, based on the cash surrender value that had accumulated over the years, to make a $21.6 million pension contribution. We contributed $9.3 million to our qualified salaried pension plan, $6.8 million to our qualified hourly pension plan and $5.5 million to our qualified non-represented pension plan, with $11.9 million being discretionary funding. We do not anticipate additional contributions to any of our qualified pension plans in 2012. During the nine months ended September 30, 2012, we made contributions of $1.3 million to our non-qualified supplemental pension plan.
The following table details the components of "Other comprehensive income, net of tax" on our Consolidated Statements of Comprehensive Income of our pension plans and OPEB for the quarters and nine months ended September 30:
 
Quarter Ended
 
Nine Months Ended
 
September 30,
 
September 30,
(Dollars in thousands)
2012
 
2011
 
2012
 
2011
Other comprehensive income, net of tax, related to:
 
 
 
 
 
 
 
Defined benefit pension plans
$
2,459

 
$
1,616

 
$
7,377

 
$
4,849

OPEB obligations
(948
)
 
(697
)
 
(2,906
)
 
(2,090
)
Other comprehensive income, net of tax
$
1,511

 
$
919

 
$
4,471

 
$
2,759