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Cost of revenue | 3 Months Ended
--- | ---
Mar. 31, 2016
Cost of revenue | 18. Cost of revenue Cost of revenue consists of the following:
|  | Three months ended March 31, |
|  | 2015 |  |  | 2016 |
Personnel expenses |  | $ | 242,948 |  |  | $ | 254,028 |
Operational expenses |  |  | 102,797 |  |  |  | 107,542 |
Depreciation and amortization |  |  | 11,731 |  |  |  | 11,278 |
|  | $ | 357,476 |  |  | $ | 372,848 |

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- Definition Disclosure pertaining to the amount and nature of costs included in cost of sales incurred and recorded in the period. + References No definition available. + Details
Name: | g_CostOfRevenueTextBlock
Namespace Prefix: | g_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration