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Accumulated Other Comprehensive Income | 6 Months Ended
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Jun. 30, 2013
Accumulated Other Comprehensive Income | I. Accumulated Other Comprehensive Income At June 30, 2013 and December 31, 2012, the accumulated other comprehensive income balances were as follows:
|  | June 30, 2013 |  |  | December 31, 2012 |
|  | (in thousands) |
Retirement plans prior service benefit, net of tax of $(125) and $(125) |  | $ | 2,678 |  |  | $ | 2,895 |
Unrealized gains on marketable securities, net of tax of $835 and $835 |  |  | 601 |  |  |  | 2,925 |
Total accumulated other comprehensive income |  | $ | 3,279 |  |  | $ | 5,820 |
Reclassifications out of accumulated other comprehensive income to the statement of operations for the three and six months ended June 30, 2013 and July 1, 2012, were as follows:
Details about Accumulated Other Comprehensive Income Components |  | For the Three Months Ended |  |  | For the Six Months Ended |  |  | Affected Line Item in the Statements of Operations |
|  | June 30, 2013 |  |  | July 1, 2012 |  |  | June 30, 2013 |  |  | July 1, 2012 |  |  |  |
|  | (in thousands) |  |  | (in thousands) |  |  |  |
Available-for-sale marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains |  | $ | 143 |  |  | $ | 24 |  |  | $ | 419 |  |  | $ | 490 |  |  |  | Interest income |
|  | $ | 143 |  |  | $ | 24 |  |  | $ | 419 |  |  | $ | 490 |  |  |  | Net income |
Amortization of defined benefit pension and postretirement plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service benefit |  | $ | 109 |  |  | $ | 92 |  |  | $ | 217 |  |  | $ | 183 |  |  |  | (a) |
|  | $ | 109 |  |  | $ | 92 |  |  | $ | 217 |  |  | $ | 183 |  |  |  | (a) |
Total reclassifications |  | $ | 252 |  |  | $ | 116 |  |  | $ | 636 |  |  | $ | 673 |  |  |  | Net income |
(a) | The amortization of prior service benefit is included in the computation of net periodic pension and postretirement benefit costs; see Note M “Retirement Plans.”

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e681-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e689-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669619-108580 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e640-108580 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e716-108580 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e709-108580 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Reclassification Adjustments -URI http://asc.fasb.org/extlink&oid=6522872 + Details
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