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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2013
Changes in Accumulated Other Comprehensive Income | Changes in accumulated other comprehensive income, which is presented net of tax, consists of the following:
|  | Unrealized Gains on Marketable Securities |  |  | Retirement Plans Prior Service Benefit |  |  | Total |
|  | (in thousands) |
Balance at December 31, 2011, net of tax of $666, $9 |  | $ | 1,618 |  |  | $ | 3,128 |  |  | $ | 4,746 |
Other comprehensive income before reclassifications, net of tax of $370 |  |  | 2,009 |  |  |  | — |  |  |  | 2,009 |
Amounts reclassified from accumulated other comprehensive income, net of tax of $(201), $(134) |  |  | (702 | ) |  |  | (233 | ) |  |  | (935 | )
Net current period other comprehensive income, net of tax of $169, $(134) |  |  | 1,307 |  |  |  | (233 | ) |  |  | 1,074 |
Balance at December 31, 2012, net of tax of $835, $(125) |  |  | 2,925 |  |  |  | 2,895 |  |  |  | 5,820 |
Other comprehensive income before reclassifications, net of tax of $216 |  |  | (1,097 | ) |  |  | — |  |  |  | (1,097 | )
Amounts reclassified from accumulated other comprehensive income, net of tax of $(257), $(159) |  |  | (447 | ) |  |  | (276 | ) |  |  | (723 | )
Net current period other comprehensive income, net of tax of $(41), $(159) |  |  | (1,544 | ) |  |  | (276 | ) |  |  | (1,820 | )
Balance at December 31, 2013, net of tax of $794, $(284) |  | $ | 1,381 |  |  | $ | 2,619 |  |  | $ | 4,000 |
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 years ended December 31, 2013, 2012 and 2011, were as follows:
Details about Accumulated Other Comprehensive Income Components |  | For the year ended |  |  | Affected Line Item in the Statements of Operations
|  | December 31, 2013 |  |  | December 31, 2012 |  |  | December 31, 2011 |  |  |
|  | (in thousands) |  |  |
Available-for-sale marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains, net of tax of $257, $201, $581 |  | $ | 447 |  |  | $ | 702 |  |  | $ | 1,412 |  |  | Interest income
|  | $ | 447 |  |  | $ | 702 |  |  | $ | 1,412 |  |  |
Amortization of defined benefit pension and postretirement plans |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service benefit, net of tax of $159, $134, $(9) |  | $ | 276 |  |  | $ | 233 |  |  | $ | (14 | ) |  | (a)
|  | $ | 276 |  |  | $ | 233 |  |  | $ | (14 | ) |  |
Total reclassifications, net of tax of $416, $335, $572 |  | $ | 723 |  |  | $ | 935 |  |  | $ | 1,398 |  |  | 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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