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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Foreign currency translation adjustments: |  |  |  |
Change in unrealized foreign currency translation gains (losses) before income tax expense (benefit) | $ (3,165) | $ (16,323) | $ 11,704 | $ (33,731)
Income tax expense (benefit) on unrealized foreign currency translation gains (losses) | (29) | (171) | 130 | (366)
Change in unrealized foreign currency translation gains (losses), net of income taxes | (3,136) | (16,152) | 11,574 | (33,365)
Unrealized gain (losses) on available-for-sale securities: |  |  |  |
Change in unrealized holding gains (losses) on investment securities | 5,129 | (18,019) | 63,414 | (35,078)
Change in net unrealized investment gains (losses) not-other-than-temporarily impaired, income tax expense (benefit) | 1,795 | (6,308) | 22,193 | (12,278)
Change in unrealized holding gains (losses) on available-for-sale securities arising during period, net of income taxes | 3,334 | (11,711) | 41,221 | (22,800)
Reclassification adjustment for realized investment (gains) losses included in net income | 33 | 381 | (2,300) | (1,892)
Income tax (expense) benefits on (gains) losses reclassified from accumulated OCI to net income | 11 | 134 | (805) | (662)
Reclassification from accumulated OCI to net income for (gains) losses realized on available-for-sale securities, net of income taxes | 22 | 247 | (1,495) | (1,230)
Change in unrealized gains (losses) on available-for-sale securities, net of income taxes and reclassification adjustment | $ 3,356 | $ (11,464) | $ 39,726 | $ (24,030)

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