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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2015
Accounting Policies [Abstract] |
Components of Other Comprehensive Income and Related Tax Effects | The components of other comprehensive income and related tax effects are as follows:
|  | (In Thousands) |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Net unrealized gain (loss) on available-for-sale securities |  | $ | 100 |  |  | $ | 1,158 |  |  | $ | (8,448 | )
Reclassification adjustment for gain on sale of available-for-sale securities |  |  | (451 | ) |  |  | (494 | ) |  |  | (775 | )
Net unrealized gains (losses) |  |  | (351 | ) |  |  | 664 |  |  |  | (9,223 | )
Tax expense (benefit) |  |  | (119 | ) |  |  | 226 |  |  |  | (3,136 | )
Other comprehensive income (loss) |  | $ | (232 | ) |  | $ | 438 |  |  | $ | (6,087 | )

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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=36458714&loc=d3e526-108580 + Details
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