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Postretirement Benefits Postretirement Benefits (Tables)
 12 Months Ended
Dec. 31, 2012
Postretirement Benefits [Abstract]  
Schedule of Changes in Accumulated Postemployment Benefit Obligations [Table Text Block]
As of December 31, the status of our defined postretirement benefit plan, calculated using generally accepted actuarial principles and procedures, was as follows:
 
(in thousands)
2012
 
2011
Postretirement benefit obligation, beginning of year
$
3,701

 
$
2,844

Net periodic benefit cost
191

 
193

Actuarial loss
409

 
609

Prior service cost
—

 
291

Amortization of prior service cost and net loss
(30
)
 
(16
)
Benefits paid
(231
)
 
(220
)
Accumulated postretirement benefit obligation, end of year (1)
$
4,040

 
$
3,701

(1) Recorded in other liabilities in our consolidated balance sheets.
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]
The following table details the amounts recognized in our accumulated other comprehensive income (loss) at December 31 related to postretirement benefits:
 
(in thousands)
2012
 
2011
Accumulated other comprehensive income (loss), beginning of year
$
(683
)
 
$
201

Prior service cost arising during period
—

 
(291
)
Amortization of prior service cost and net loss
30

 
16

Actuarial loss arising during period
(409
)
 
(609
)
Accumulated other comprehensive loss, end of year
$
(1,062
)
 
$
(683
)