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Accumulated Other Comprehensive Loss | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Accumulated Other Comprehensive Loss | 15. Accumulated Other Comprehensive Loss Activity within accumulated other comprehensive loss for the three years ended December 31, 2017, 2016, and 2015 were as follows:
|  | Unrealized gain on available-for-sale securities |  |  | Foreign currency translation |  |  | Accumulated other comprehensive loss |
Balance at December 31, 2014 |  | $ | 22,977 |  |  | $ | (42,860 | ) |  | $ | (19,883 | )
Other comprehensive loss |  |  | (22,977 | ) |  |  | (28,716 | ) |  |  | (51,693 | )
Balance at December 31, 2015 |  |  | — |  |  |  | (71,576 | ) |  |  | (71,576 | )
Other comprehensive loss |  |  | — |  |  |  | (22,524 | ) |  |  | (22,524 | )
Balance at December 31, 2016 |  |  | — |  |  |  | (94,100 | ) |  |  | (94,100 | )
Other comprehensive income |  |  | — |  |  |  | 16,744 |  |  |  | 16,744 |
Balance at December 31, 2017 |  | $ | — |  |  | $ | (77,356 | ) |  | $ | (77,356 | )

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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- References No definition available. + Details
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