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LEASES (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Sep. 30, 2014	Dec. 31, 2012
Capital Lease Obligations
2014	1,523,229us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent
2015	784,925us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears
2016	150,572us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears
Total minimum lease payments required	2,458,726us-gaap_CapitalLeasesFutureMinimumPaymentsDue
Less: Amount representing interest	(133,751)us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
Present value of minimum lease payments	2,324,975us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments
Less current maturities	(1,423,268)us-gaap_CapitalLeaseObligationsCurrent	(937,048)us-gaap_CapitalLeaseObligationsCurrent	(1,960,503)us-gaap_CapitalLeaseObligationsCurrent
Capital lease obligations, noncurrent	901,707us-gaap_CapitalLeaseObligationsNoncurrent	364,801us-gaap_CapitalLeaseObligationsNoncurrent	1,884,937us-gaap_CapitalLeaseObligationsNoncurrent
Capital Lease Obligations
Net book value of capital assets leased	2,954,000us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet		4,957,000us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet
Total accumulated depreciation	7,221,000us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation		$ 5,114,000us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
Minimum
Capital Lease Obligations
Interest rate (as a percent)	4.58%tge_CapitalLeaseInterestRateStatedPercentage / us-gaap_RangeAxis = us-gaap_MinimumMember
Maximum
Capital Lease Obligations
Interest rate (as a percent)	8.17%tge_CapitalLeaseInterestRateStatedPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition

Represents the interest rate stated in the capital lease agreement.

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Article 5



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- Definition

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

+ References

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The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the third fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the second fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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