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Accumulated Other Comprehensive Income (Tables)
 6 Months Ended
Jun. 30, 2013
Accumulated Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
       In February 2013, the FASB issued new guidance, ASU 2013-02, Comprehensive Income (Topic 220) as discussed in Note A. This guidance requires disclosures regarding changes in Accumulated Other Comprehensive Loss (net of tax) by component which are presented below (in thousands):
 
 
 
 
 
 
 
Three Months Ended June 30, 2013
 
 
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Unrecognized Pension and Postretirement Benefit Costs
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Loss
 
 
 
 
 
 
 
 
 
 
Balance at March 31, 2013
27,858

 
(75,032
)
 
(12,492
)
 
(59,666
)
 
 
 
 
 
 
 
 
 
 
Other comprehensive loss before reclassifications
(1,623
)
 
—

 
—

 
(1,623
)
 
Amounts reclassified from accumulated other comprehensive loss
(205
)
 
834

 
63

 
692

Balance at June 30, 2013
$
26,030

 
$
(74,198
)
 
$
(12,429
)
 
$
(60,597
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Six Months Ended June 30, 2013
 
 
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Unrecognized Pension and Postretirement Benefit Costs
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Loss
 
 
 
 
 
 
 
 
 
 
Balance at December 31, 3012
$
22,194

 
$
(75,737
)
 
$
(12,541
)
 
$
(66,084
)
 
Other comprehensive income before reclassifications
3,920

 
—

 
—

 
3,920

 
Amounts reclassified from accumulated other comprehensive loss
(84
)
 
1,539

 
112

 
1,567

Balance at June 30, 2013
$
26,030

 
$
(74,198
)
 
$
(12,429
)
 
$
(60,597
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Twelve Months Ended June 30, 2013
 
 
 
Net Unrealized Gains (Losses) on Marketable Securities
 
Unrecognized Pension and Postretirement Benefit Costs
 
Net Losses on Cash Flow Hedges
 
Accumulated Other Comprehensive Loss
 
 
 
 
 
 
 
 
 
 
Balance at June 30, 2012
$
19,344

 
$
(76,364
)
 
$
(12,687
)
 
$
(69,707
)
 
Other comprehensive income (loss) before reclassifications
6,944

 
(1,264
)
 
—

 
5,680

 
Amounts reclassified from accumulated other comprehensive loss
(258
)
 
3,430

 
258

 
3,430

Balance at June 30, 2013
$
26,030

 
$
(74,198
)
 
$
(12,429
)
 
$
(60,597
)
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) [Table Text Block]
Amounts reclassified from accumulated other comprehensive loss for the three, six and twelve months ended June 30, 2013 are as follows ( in thousands):

Details about Accumulated Other Comprehensive Income (Loss) Components
 
Three Months Ended
 
Six Months Ended
 
Twelve Months Ended
 
Affected Line Item in the Statement of Operations
 
June 30, 2013
 
 
 
 
 
 
 
 
 
 
 
 
Marketable securities:
 
 
 
 
 
 
 
 
 
Net realized gain on sale of securities
 
$
246

 
$
88

 
$
593

 
Investment and interest income, net
 
Unrealized losses on available-for-sale securities included in pre-tax income
 
—

 
—

 
(313
)
 
Investment and interest income, net
 
 
 
 
246

 
88

 
280

 
Total before tax
 
 
 
 
(41
)
 
(4
)
 
(22
)
 
Income tax expense
 
 
 
 
205

 
84

 
258

 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Amortization of pension and postretirement benefit costs:
 
 
 
 
 
 
 
 
 
Prior service benefit
 
1,400

 
2,800

 
5,682

 
(a)
 
Net loss
 
(2,745
)
 
(5,420
)
 
(11,406
)
 
(a)
 
 
 
 
(1,345
)
 
(2,620
)
 
(5,724
)
 
Total before tax
 
 
 
 
511

 
1,081

 
2,294

 
Income tax expense
 
 
 
 
(834
)
 
(1,539
)
 
(3,430
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
Loss on cash flow hedge:
 
 
 
 
 
 
 
 
 
Amortization of loss
 
(101
)
 
(202
)
 
(398
)
 
Interest on long-term debt and revolving credit facility
 
 
 
 
(101
)
 
(202
)
 
(398
)
 
Total before tax
 
 
 
 
38

 
90

 
140

 
Income tax expense
 
 
 
 
(63
)
 
(112
)
 
(258
)
 
Net of tax
 
 
 
 
 
 
 
 
 
 
 
 
Total reclassifications
 
$
(692
)
 
$
(1,567
)
 
$
(3,430
)
 
Net of tax
 
 
(a) These items are included in the computation of net periodic benefit cost. See Note H, Employee Benefits, for additional information.