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Selling, general and administrative expenses | 3 Months Ended
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Mar. 31, 2016
Selling, general and administrative expenses | 19. Selling, general and administrative expenses Selling, general and administrative expenses consist of the following:
|  | Three months ended March 31, |
|  | 2015 |  |  | 2016 |
Personnel expenses |  | $ | 105,838 |  |  | $ | 108,400 |
Operational expenses |  |  | 40,562 |  |  |  | 49,578 |
Depreciation and amortization |  |  | 2,348 |  |  |  | 2,171 |
|  | $ | 148,748 |  |  | $ | 160,149 |

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- Definition Describes the nature of and identifies the significant items comprising an entity's selling, general and administrative (or similar) report caption. + References No definition available. + Details
Name: | g_SellingGeneralAndAdministrativeTextBlock
Namespace Prefix: | g_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration