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Debt (Details) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
May 13, 2020 | Dec. 05, 2019 | Apr. 04, 2017 | Nov. 28, 2019 | Dec. 31, 2019 | Apr. 30, 2020
Subsequent Event [Member] |  |  |  |  |  |
Debt (Textual) |  |  |  |  |  |
Revolving loan facility |  |  |  |  |  | $ 3,500
JPMorgan Chase Bank [Member] |  |  |  |  |  |
Debt (Textual) |  |  |  |  |  |
Credit facility, description |  | the Company entered into an amendment of its existing Credit Agreement with JPMorgan Chase Bank ( the “Credit Agreement”) to extend the maturity date of December 31, 2020. The Company continues to have the aggregate principal amount of $5.0 million credit line facility (“Credit Line”). The Company pays a commitment fee of 0.1% per annum on unused portion of the Credit Line as specified in the Credit Agreement. The borrowed amounts will be in the form of letters of credit which will bear interest of 1.0% per annum. The Company will also pay a fee for each letter of credit that is issued equal to the greater of $500 or 1.0% of the original maximum available amount of the letter of credit. The Company agreed to deposit cash in a money market account at JPMorgan Chase Bank as collateral for the line of credit equal to $5.1 million. As of, June 30, 2020, JP Morgan Chase Bank issued $2.3 million letters of credit from the Credit Line. As of June 30, 2020, none of the letters of credits were drawn upon. At June 30, 2020, the cash collateral of $5.2 million was included in restricted cash—short-term in the consolidated balance sheet. |  |  |  |
Loan with Tokyo Star Bank [Member] |  |  |  |  |  |
Debt (Textual) |  |  |  |  |  |
Credit facility, description | Genie Japan entered into a new Loan Agreement with Tokyo Star Bank for a ¥150.0 million (equivalent to $1.4 million) short-term credit facility ("May 2020 Loan"). Genie Japan provided a letter of credit issued by JPMorgan Chase in the amount of ¥150.0 million (equivalent to $1.4 million) as collateral. The outstanding principal amount incurs interest at 3.0% per annum. Interest is payable monthly and all outstanding principal and any accrued and unpaid interest mature on November 13, 2020. At June 30, 2020, $1.4 million was outstanding under the May 2020 Loan. At June 30, 2020, the effective interest rate was 3.0%. |  |  |  |  |
Description loan agreement |  |  |  | Genie Japan entered into a Loan Agreement with Tokyo Star Bank for a ¥100.0 million (equivalent to $0.9 million) short-term credit facility. Genie Japan provided a letter of credit issued by JPMorgan Chase amounting to ¥100.0 million (equivalent to $0.9 million) as collateral. The outstanding principal amount incurred interest at Tokyo Star Bank's short-term prime rate plus 0.25% per annum. Interest was payable monthly and all outstanding principal and any accrued and unpaid interest matured on May 13, 2020. Genie Japan settled the Loan agreement and paid the outstanding balance of ¥100.0 million (equivalent to $0.9 million) on May 13, 2020. |  |
Vantage Commodities Financial Services II, LLC [Member] | GRE Credit Agreement [Member] |  |  |  |  |  |
Debt (Textual) |  |  |  |  |  |
Maximum principal amount on revolving line of credit |  |  | $ 20,000,000 |  |  |
Interest rate on principal outstanding, description |  |  | outstanding principal amount incurred interest at LIBOR plus 4.5% per annum. |  |  |
Maturity date |  |  | Apr. 03, 2020 |  |  |
Revolving loan facility |  |  |  |  | $ 2,500,000 |
Effective interest rate |  |  |  |  | 6.41% |

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- Definition Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 + Details
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- Definition Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600 + Details
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