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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2016
Changes in accumulated other comprehensive income (loss) | Changes in accumulated other comprehensive income (loss), which is presented net of tax, consists of the following:
|  | Foreign Currency Translation Adjustment |  |  | Unrealized Gains (Losses) on Marketable Securities |  |  | Retirement Plans Prior Service Credit |  |  | Total |
|  | (in thousands) |
Balance at December 31, 2014, net of tax of $1,598, $(453) |  | $ | — |  |  | $ | 2,365 |  |  | $ | 2,324 |  |  | $ | 4,689 |
Other comprehensive loss before reclassifications, net of tax of $0, $(1,667) |  |  | (8,759 | ) |  |  | (3,075 | ) |  |  | — |  |  |  | (11,834 | )
Amounts reclassified from accumulated other comprehensive income, net of tax of $(390), $(169) |  |  | — |  |  |  | (704 | ) |  |  | (295 | ) |  |  | (999 | )
Net current period other comprehensive loss, net of tax of $0, $(2,057), $(169) |  |  | (8,759 | ) |  |  | (3,779 | ) |  |  | (295 | ) |  |  | (12,833 | )
Balance at December 31, 2015, net of tax of $0, $(459), $(622) |  | $ | (8,759 | ) |  | $ | (1,414 | ) |  | $ | 2,029 |  |  | $ | (8,144 | )
Other comprehensive (loss) income before reclassifications, net of tax of $0, $923, $34 |  |  | (13,162 | ) |  |  | 2,037 |  |  |  | 59 |  |  |  | (11,125 | )
Amounts reclassified from accumulated other comprehensive income, net of tax of $(255), $(190) |  |  | — |  |  |  | (683 | ) |  |  | (321 | ) |  |  | (945 | )
Net current period other comprehensive (loss) income, net of tax of $0, $668, $(156) |  |  | (13,162 | ) |  |  | 1,354 |  |  |  | (262 | ) |  |  | (12,070 | )
Balance at December 31, 2016, net of tax of $0, $209, $(778) |  | $ | (21,921 | ) |  | $ | (60 | ) |  | $ | 1,767 |  |  | $ | (20,214 | )
Reclassifications Out of Accumulated Other Comprehensive Income to Statements of Operations | Reclassifications out of accumulated other comprehensive income to the statements of operations for the years ended December 31, 2016, 2015 and 2014, were as follows:
Details about Accumulated Other Comprehensive Income Components |  | For the year ended |  |  | Affected Line Item in the Statements of Operations |
|  | December 31, 2016 |  |  | December 31, 2015 |  |  | December 31, 2014 |  |  |  |
|  | (in thousands) |  |  |  |
Available-for-sale marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrealized gains, net of tax of $255, $390, $645 |  | $ | 683 |  |  | $ | 704 |  |  | $ | 1,433 |  |  |  | Interest income |
Defined benefit pension and postretirement plans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of prior service credit, net of tax of $190, $169, $169 |  |  | 321 |  |  |  | 295 |  |  |  | 295 |  |  |  | (1) |
Prior service income arising during period, net of tax of $(34), $0, $0 |  |  | (59 | ) |  |  | — |  |  |  | — |  |  |  |  |
|  |  | 262 |  |  |  | 295 |  |  |  | 295 |  |  |  |  |
Total reclassifications, net of tax of $411, $559, $814 |  | $ | 945 |  |  | $ | 999 |  |  | $ | 1,728 |  |  |  | Net income |
(1) | The amortization of prior service credit 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=66004124&loc=d3e526-108580 + Details
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