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v2.4.1.9

DIVIDENDS (Details) | 0 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 14, 2013 | May 14, 2012 | Sep. 30, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Apr. 19, 2013
DIVIDENDS |  |  |  |  |  |
Percentage of dividend declared on common stock |  |  | 0.00%tge_CommonStockDividendsDeclaredPercentage |  |  | 5.00%tge_CommonStockDividendsDeclaredPercentage
Percentage of dividend paid on common stock | 5.00%tge_CommonStockDividendsPaidPercentage | 5.00%tge_CommonStockDividendsPaidPercentage | 0.00%tge_CommonStockDividendsPaidPercentage | 5.00%tge_CommonStockDividendsPaidPercentage | 5.00%tge_CommonStockDividendsPaidPercentage |

X
- Definition Represents the percentage of dividend declared on outstanding common shares. + References No definition available. + Details
Name: | tge_CommonStockDividendsDeclaredPercentage
Namespace Prefix: | tge_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the percentage of dividend paid on outstanding common shares. + References No definition available. + Details
Name: | tge_CommonStockDividendsPaidPercentage
Namespace Prefix: | tge_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | tge_DividendsDisclosureAbstract
Namespace Prefix: | tge_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration