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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2014
Equity [Abstract] |
Activity within Accumulated Other Comprehensive Loss | Activity within accumulated other comprehensive loss for the three years ended December 31, 2014, 2013, and 2012 were as follows:
|  | Unrealized gain on available-for-sale securities |  |  | Foreign currency translation |  |  | Accumulated other comprehensive loss |
Balance at December 31, 2011 |  | $ | 594 |  |  | $ | (17,855 | ) |  | $ | (17,261 | )
Other comprehensive income |  |  | 963 |  |  |  | 3,824 |  |  |  | 4,787 |
Reclassification of unrealized gain to a realized gain on available-for-sale securities |  |  | (1,557 | ) |  |  | — |  |  |  | (1,557 | )
Balance at December 31, 2012 |  |  | — |  |  |  | (14,031 | ) |  |  | (14,031 | )
Other comprehensive loss |  |  | — |  |  |  | (9,284 | ) |  |  | (9,284 | )
Balance at December 31, 2013 |  |  | — |  |  |  | (23,315 | ) |  |  | (23,315 | )
Other comprehensive income (loss) |  |  | 22,977 |  |  |  | (19,545 | ) |  |  | 3,432 |
Balance at December 31, 2014 |  | $ | 22,977 |  |  | $ | (42,860 | ) |  | $ | (19,883 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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