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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2014
Cash and Cash Equivalents |
Schedule of summary of cash and cash equivalents |
|  | December 31, |
|  | 2013 |  |  | 2014 |
Cash |  | $ | 4,670 |  |  | $ | 5,870 |
Investments with original maturity of less than three months at the time of purchase |  |  | 26,476 |  |  |  | 18,319 |
Total cash and cash equivalents |  | $ | 31,146 |  |  | $ | 24,189 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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