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Accumulated Other Comprehensive Income (Tables) | 9 Months Ended
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Sep. 29, 2013
Changes in Accumulated Other Comprehensive Income | Changes in accumulated other comprehensive income, which is presented net of tax, consist of the following:
|  | Unrealized Gains on Marketable Securities |  |  | Retirement Plans Prior Service Credit |  |  | Total |
|  | (in thousands) |
Balance at December 31, 2012 (a) |  | $ | 2,925 |  |  | $ | 2,895 |  |  | $ | 5,820 |
Other comprehensive income before reclassifications |  |  | (1,019 | ) |  |  | — |  |  |  | (1,019 | )
Amounts reclassified from accumulated other comprehensive income |  |  | (621 | ) |  |  | (325 | ) |  |  | (946 | )
Net current period other comprehensive income |  |  | (1,640 | ) |  |  | (325 | ) |  |  | (1,965 | )
Balance at September 29, 2013 (a) |  | $ | 1,285 |  |  | $ | 2,570 |  |  | $ | 3,855 |
(a) | Net of tax of $835 for unrealized gains on marketable securities and $(125) for retirement plans prior service credit.
Reclassifications out of Accumulated Other Comprehensive Income | Reclassifications out of accumulated other comprehensive income to the statement of operations for the three and nine months ended September 29, 2013 and September 30, 2012, were as follows:
Details about Accumulated Other Comprehensive Income Components |  | For the Three Months Ended |  |  | For the Nine Months Ended |  |  | Affected Line Item in the Statements of Operations
|  | September 29, 2013 |  |  | September 30, 2012 |  |  | September 29, 2013 |  |  | September 30, 2012 |  |  |
|  |  |  |  | (in thousands) |  |  |  |  |  |
Available-for-sale marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains |  | $ | 202 |  |  | $ | 93 |  |  | $ | 621 |  |  | $ | 583 |  |  | Interest income
|  | $ | 202 |  |  | $ | 93 |  |  | $ | 621 |  |  | $ | 583 |  |  |
Amortization of defined benefit pension and postretirement plans Prior service benefit |  |  |  |  |  |  |  |  |  |  |
| $ | 109 |  |  | $ | 92 |  |  | $ | 325 |  |  | $ | 275 |  |  | (a)
|  | $ | 109 |  |  | $ | 92 |  |  | $ | 325 |  |  | $ | 275 |  |  |
Total reclassifications |  | $ | 311 |  |  | $ | 185 |  |  | $ | 946 |  |  | $ | 858 |  |  | Net income
(a) | The amortization of prior service benefit is included in the computation of net periodic pension cost and postretirement benefit; see Note M “Retirement Plans.”

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e526-108580 + Details
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