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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 30, 2014
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, 2013, net of tax of $794, $(284) |  | $ | 1,381 |  |  | $ | 2,619 |  |  | $ | 4,000 |
Other comprehensive income before reclassifications, net of tax of $654 |  |  | 1,139 |  |  |  | — |  |  |  | 1,139 |
Amounts reclassified from accumulated other comprehensive income, net of tax of $(102), $(42) |  |  | (176 | ) |  |  | (73 | ) |  |  | (249 | )
Net current period other comprehensive income |  |  | 963 |  |  |  | (73 | ) |  |  | 890 |
Balance at March 30, 2014, net of tax of $1,346, $(326) |  | $ | 2,344 |  |  | $ | 2,546 |  |  | $ | 4,890 |
Reclassification Out of Accumulated Other Comprehensive Income to Statement of Operations | Reclassifications out of accumulated other comprehensive income to the statement of operations for the three months ended March 30, 2014 and March 31, 2013, were as follows:
Details about Accumulated Other Comprehensive Income Components |  | For the Three Months Ended |  |  | Affected Line Item in the Statements of Operations
|  | March 30, 2014 |  |  | March 31, 2013 |  |  |
|  | (in thousands) |  |  |
Available-for-sale marketable securities |  |  |  |  |  |  |  |  |  |
Unrealized gains, net of tax of $102, $83 |  | $ | 176 |  |  | $ | 144 |  |  | Interest income
Amortization of defined benefit pension and postretirement plans Prior service benefit, net of tax of $42, $40 |  |  | 73 |  |  |  | 69 |  |  | (a)
Total reclassifications, net of tax of $144, $123 |  | $ | 249 |  |  | $ | 213 |  |  | Net income
(a) | The amortization of prior service benefit is included in the computation of net periodic pension cost and postretirement benefit; see Note N: “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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