XML 31 R29.htm IDEA: XBRL DOCUMENT v2.4.0.6
Pension and Other Postretirement Benefit Plans (Tables)
 9 Months Ended
Sep. 30, 2012
Components Of Net Periodic Cost
The components of net periodic cost are as follows:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(in thousands)
Pension Benefits
 
Other
Postretirement
Benefits
 
Pension Benefits
 
Other
Postretirement
Benefits
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
 
2012
 
2011
Service cost
$
3,131

 
$
2,951

 
$
29

 
$
28

 
$
10,121

 
$
8,852

 
$
87

 
$
85

Interest cost
9,525

 
9,555

 
127

 
156

 
28,193

 
28,666

 
381

 
441

Expected return on plan assets
(12,832
)
 
(12,585
)
 
—

 
—

 
(38,492
)
 
(37,757
)
 
—

 
—

Amortization of prior service cost
102

 
105

 
(59
)
 
(127
)
 
302

 
314

 
(177
)
 
(177
)
Amortization of net loss (gain)
4,794

 
1,685

 
(21
)
 
43

 
14,417

 
5,054

 
(63
)
 
(75
)
Net periodic cost
$
4,720

 
$
1,711

 
$
76

 
$
100

 
$
14,541

 
$
5,129

 
$
228

 
$
274