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Postretirement benefits (Other Postretirement Benefit Plans, Defined Benefit [Member])
 12 Months Ended
Dec. 31, 2012
Other Postretirement Benefit Plans, Defined Benefit [Member]
  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Pension and Other Postretirement Benefits Disclosure [Text Block]
POSTRETIREMENT BENEFITS OTHER THAN PENSIONS
 
The Company sponsors several defined postretirement benefit plans that cover a majority of salaried and a portion of nonunion hourly employees.  These plans provide healthcare benefits and, in some instances, provide life insurance benefits.  Postretirement health care plans are contributory, with retiree contributions adjusted annually.  Life insurance plans are noncontributory.
 
Net periodic postretirement benefit costs included the following components for the years ended December 31, 2012, 2011, and 2010:
 
(in millions)
 
2012
 
2011
 
2010
Service cost - benefits earned during the year
 
$
0.3

 
$
0.3

 
$
0.3

Interest cost on accumulated postretirement benefit obligation
 
0.4

 
0.4

 
0.4

Amortization of prior service credit
 
(0.6
)
 
(0.6
)
 
(0.7
)
Recognized actuarial net gain
 
(0.3
)
 
(0.4
)
 
(0.5
)
Net periodic postretirement benefit income
 
$
(0.2
)
 
$
(0.3
)
 
$
(0.5
)

 
Changes in benefit obligation and plan assets, and a reconciliation of the funded status at December 31, 2012 and 2011, are as follows:
 
(in millions)
 
2012
 
2011
Change in Benefit Obligation
 
 

 
 

Benefit obligation at the beginning of the year
 
$
9.4

 
$
7.8

Service cost
 
0.3

 
0.3

Interest cost
 
0.4

 
0.4

Participant contributions
 
0.4

 
0.6

Plan amendments
 
—

 
0.9

Actuarial loss
 
0.1

 
1.2

Benefits paid
 
(1.5
)
 
(1.8
)
Benefit obligation at the end of the year
 
$
9.1

 
$
9.4

 
 
 
 
 
Change in Plan Assets
 
 

 
 

Fair value of plan assets at the beginning of the year
 
$
—

 
$
—

Participant contributions
 
0.4

 
0.6

Employer contribution
 
1.1

 
1.2

Benefits paid
 
(1.5
)
 
(1.8
)
Fair value of plan assets at the end of the year
 
$
—

 
$
—

 
 
 
 
 
Unfunded status at year end:
 
$
(9.1
)
 
$
(9.4
)

(in millions)
 
2012
 
2011
Amount recognized in consolidated balance sheet consists of:
 
 

 
 

Accrued benefit liability, current
 
$
(0.6
)
 
$
(0.7
)
Accrued benefit liability, non-current
 
(8.5
)
 
(8.7
)
Deferred tax liability
 
(2.8
)
 
(3.1
)
Accumulated other comprehensive income
 
(4.5
)
 
(5.2
)
Net amount related to postretirement benefit plans
 
$
(16.4
)
 
$
(17.7
)
 
Accumulated other comprehensive income related to other postretirement benefit plans is as follows:
 
(in millions)
 
2012
 
2011
Unrecognized net actuarial gains
 
$
(3.0
)
 
$
(4.6
)
Unrecognized net prior service credits
 
(4.3
)
 
(3.7
)
Tax expense
 
2.8

 
3.1

Accumulated other comprehensive loss (income), end of year
 
$
(4.5
)
 
$
(5.2
)
 
Estimated amounts in accumulated other comprehensive income expected to be reclassified to net period cost during 2013 are as follows:
 
(in millions)
 
Net actuarial gains
$
(0.3
)
Net prior service credits
(0.6
)
Total
$
(0.9
)

 
The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:
 
(in millions)
Benefit Payments
2013
$
0.6

2014
0.6

2015
0.7

2016
0.7

2017
0.7

Years 2018-2022
3.7


 
The employer contributions for the years ended December 31, 2012 and 2011, were $1.1 million and $1.2 million, respectively.  The expected contribution for 2013 is $0.6 million which is expected to satisfy plan funding requirements.
 
The health care cost trend rate assumption affects the amounts reported.  For measurement purposes, the assumed annual rate of increase in the per capita cost of covered health care benefits was 7.5 percent for 2012 and was 8.0 percent for 2011; each year’s estimated rate was assumed to decrease gradually to 5.0 percent and remain at that level thereafter.  The annual incremental decrease was assumed to be one-half percent for both 2012 and 2011.  A one-percentage point change in assumed health care trends would have the following effects:
 
(in millions)
 
One Percentage Point Increase
 
One Percentage Point Decrease
Effect on total of service and interest cost components for 2012
 
$
2.8

 
$
(2.6
)
Effect on postretirement benefit obligation at December 31, 2012
 
48.4

 
(44.8
)

 
The Company’s actuarial valuation date is December 31.  The weighted-average discount rates used to determine the actuarial present value of the net postretirement projected benefit obligation for the years ended December 31, 2012 and 2011 were 4.00 percent and 4.25 percent, respectively.  The weighted-average discount rates used to determine the net postretirement benefit cost was 4.25 percent, 5.25 percent, and 5.75 percent for the years ended December 31, 2012, 2011, and 2010, respectively.