Genie Energy (GNE) 10-Q 9 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 04, 2021
Entity Registrant Name	Genie Energy Ltd.
Entity Central Index Key	0001528356
Document Type	10-Q
Document Period End Date	Jun. 30, 2021
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Shell Company	false
Document Fiscal Period Focus	Q2
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Document Fiscal Year Focus	2021
Entity Emerging Growth Company	false
Entity File Number	1-35327
Entity Tax Identification Number	45-2069276
Entity Interactive Data Current	Yes
Entity Incorporation, State or Country Code	DE
Trading Symbol	GNE
Title of 12(b) Security	Class B common stock, par value $0.01 per share
Security Exchange Name	NYSE
Document Quarterly Report	true
Document Transition Report	false
Entity Address, Address Line One	520 Broad Street
Entity Address, City or Town	Newark
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07102
City Area Code	973
Local Phone Number	438-3500
Class A Common Stock
Entity Common Stock, Shares Outstanding		1,574,326
Class B Common Stock
Entity Common Stock, Shares Outstanding		24,481,739

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 31,446	$ 36,913
Restricted cash—short-term	6,121	6,271
Marketable equity securities	13,370	5,089
Trade accounts receivable, net of allowance for doubtful accounts of $11,268 and $8,793 at June 30, 2021 and December 31, 2020, respectively	59,659	60,778
Inventory	15,653	16,930
Prepaid expenses	5,385	4,633
Other current assets	4,956	3,206
Total current assets	136,590	133,820
Property and equipment, net	269	259
Goodwill	26,041	25,929
Other intangibles, net	9,177	11,645
Investment in joint venture	936
Deferred income tax assets, net	1,908	4,882
Other assets	10,205	10,804
Total assets	185,126	187,339
Current liabilities:
Loan payable		1,453
Trade accounts payable	36,141	43,005
Accrued expenses	49,104	42,762
Contract liability	5,217	5,609
Income taxes payable	2,518	1,893
Due to IDT Corporation, net	304	257
Other current liabilities	2,011	2,494
Total current liabilities	95,295	97,473
Other liabilities	3,331	3,787
Total liabilities	98,626	101,260
Commitments and contingencies
Genie Energy Ltd. stockholders’ equity:
Preferred stock, $0.01 par value; authorized shares—10,000: Series 2012-A, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at June 30, 2021 and December 31, 2020	19,743	19,743
Additional paid-in capital	142,056	140,746
Treasury stock, at cost, consisting of 1,713 and 1,320 shares of Class B common stock at June 30, 2021 and December 31, 2020, respectively	(12,274)	(9,839)
Accumulated other comprehensive income	3,178	3,827
Accumulated deficit	(54,017)	(56,658)
Total Genie Energy Ltd. stockholders’ equity	98,963	98,095
Noncontrolling interests	(12,463)	(12,016)
Total equity	86,500	86,079
Total liabilities and equity	185,126	187,339
Class A Common Stock
Genie Energy Ltd. stockholders’ equity:
Common stock, value	16	16
Total equity	16	16
Class B Common Stock
Genie Energy Ltd. stockholders’ equity:
Common stock, value	261	260
Total equity	$ 261	$ 260

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Allowance for doubtful accounts, trade accounts receivable (in dollars)	$ 11,268	$ 8,793
Preferred stock, par value (In dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000	10,000
Treasury stock, shares		1,320
Series 2012-A Preferred Stock
Designated shares	8,750	8,750
Preferred stock, shares issued	2,322	2,322
Preferred stock, shares outstanding	2,322	2,322
Class A Common Stock
Common stock, par value (In dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	35,000	35,000
Common stock, shares issued	1,574	1,574
Common stock, shares outstanding	1,574	1,574
Class B Common Stock
Common stock, par value (In dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	26,106	25,966
Common stock, shares outstanding	24,393	24,646
Treasury stock, shares	1,713	1,320

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues:
Total revenues	$ 97,706	$ 76,075	$ 233,047	$ 180,126
Cost of revenues	73,940	56,588	191,752	131,734
Gross profit	23,766	19,487	41,295	48,392
Operating expenses and losses:
Selling, general and administrative (i)	22,410	15,956	46,514	35,456	[1]
Impairment of assets		801		993
Income (loss) from operations	1,356	2,730	(5,219)	11,943
Interest income	10	20	20	143
Interest expense	(103)	(58)	(212)	(175)
Equity in the net income (loss) in equity method investees, net	53	(1,173)	164	(1,552)
Unrealized gain on marketable equity securities and investments	2,915		7,022
Gain on sale of subsidiary	4,226		4,226
Other (loss) income, net	(14)	(52)	283	98
Income before income taxes	8,443	1,467	6,284	10,457
Provision for income taxes	(3,158)	(587)	(3,693)	(3,156)
Net income	5,285	880	2,591	7,301
Net loss attributable to noncontrolling interests	82	1,083	790	494
Net income attributable to Genie Energy Ltd.	5,367	1,963	3,381	7,795
Dividends on preferred stock	(370)	(370)	(740)	(740)
Net income attributable to Genie Energy Ltd. common stockholders	$ 4,997	$ 1,593	$ 2,641	$ 7,055
Earnings per share attributable to Genie Energy Ltd. common stockholders:
Basic	$ 0.19	$ 60	$ 0.10	$ 0.27
Diluted	$ 0.19	$ 60	$ 0.10	$ 0.26
Weighted-average number of shares used in calculation of earnings per share:
Basic	25,804	26,087	25,903	26,098
Diluted	26,227	26,853	26,446	26,804
Dividends declared per common share		$ 85		$ 0.160
Electricity [Member]
Revenues:
Total revenues	$ 83,314	$ 65,906	$ 186,985	$ 135,877
Natural Gas [Member]
Revenues:
Total revenues	11,776	5,396	40,848	21,467
Other [Member]
Revenues:
Total revenues	$ 2,616	$ 4,773	$ 5,214	$ 22,782
[1]	Stock-based compensation included in selling, general and administrative expenses

Consolidated Statements of Op_2

Consolidated Statements of Operations (Parenthetical) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Selling, General and Administrative Expenses [Member]
Stock-based compensation included in selling, general and administrative expenses	$ 559	$ 401	$ 1,148	$ 884

Consolidated Statements of Comp

Consolidated Statements of Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 5,285	$ 880	$ 2,591	$ 7,301
Other comprehensive income:
Foreign currency translation adjustments	105	135	(237)	41
Comprehensive (loss) income	5,390	1,015	2,354	7,342
Comprehensive loss (gain) attributable to noncontrolling interests	82	1,271	560	493
Comprehensive (loss) income attributable to Genie Energy Ltd.	$ 5,472	$ 2,286	$ 2,914	$ 7,835

Consolidated Statements of Equi

Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Class A Common Stock	Class B Common Stock	Preferred Stock	Additional Paid-In Capital	Treasury Stock	Accumulated Other Comprehensive Income	Accumulated Deficit	Noncontrolling Interests
Beginning Balance at Dec. 31, 2019	$ 80,930	$ 16	$ 258	$ 19,743	$ 139,615	$ (7,675)	$ 2,519	$ (59,671)	$ (13,875)
Beginning Balance, shares at Dec. 31, 2019		1,574	25,785	2,322
Dividends on preferred stock	(370)							(370)
Dividends on common stock	(1,975)							(1,975)
Stock Based Compensation	483				483
Stock-based compensation, shares			20
Repurchase of Class B common stock from stock purchase program	88					(88)
Repurchase of Class B common stock from stock repurchase program, shares
Noncontrolling interest from acquisition of Lumo					(29)				29
Deconsolidation of subsidiaries	(98)						(6)		(92)
Other comprehensive (loss) income	(94)						(283)		189
Net income (loss)	6,421							5,832	589
Ending Balance at Mar. 31, 2020	85,209	$ 16	$ 258	$ 19,743	140,069	(7,763)	2,230	(56,184)	(13,160)
Ending Balance, Shares at Mar. 31, 2020		1,574	25,805	2,322
Beginning Balance at Dec. 31, 2019	80,930	$ 16	$ 258	$ 19,743	139,615	(7,675)	2,519	(59,671)	(13,875)
Beginning Balance, shares at Dec. 31, 2019		1,574	25,785	2,322
Net income (loss)	7,301
Ending Balance at Jun. 30, 2020	82,602	$ 16	$ 258	$ 19,743	140,470	(9,221)	2,553	(56,831)	(14,386)
Ending Balance, Shares at Jun. 30, 2020		1,574	25,805	2,322
Beginning Balance at Mar. 31, 2020	85,209	$ 16	$ 258	$ 19,743	140,069	(7,763)	2,230	(56,184)	(13,160)
Beginning Balance, shares at Mar. 31, 2020		1,574	25,805	2,322
Dividends on preferred stock	(370)							(370)
Dividends on common stock	(2,240)							(2,240)
Stock Based Compensation	401				401
Stock-based compensation, shares
Repurchase of Class B common stock from stock purchase program	(1,458)					(1,458)
Repurchase of Class B common stock from stock repurchase program, shares
Purchase of subsidiary	45								45
Other comprehensive (loss) income	135						323		(188)
Net income (loss)	880							1,963	(1,083)
Ending Balance at Jun. 30, 2020	82,602	$ 16	$ 258	$ 19,743	140,470	(9,221)	2,553	(56,831)	(14,386)
Ending Balance, Shares at Jun. 30, 2020		1,574	25,805	2,322
Beginning Balance at Dec. 31, 2020	86,079	$ 16	$ 260	$ 19,743	140,746	(9,839)	3,827	(56,658)	(12,016)
Beginning Balance, shares at Dec. 31, 2020		1,574	25,811	2,322
Dividends on preferred stock	(370)							(370)
Stock Based Compensation	589		$ 1		588
Stock-based compensation, shares			121
Issuance of Class B common stock to Howard Jonas (in shares)			20
Issuance of Class B common stock to Howard Jonas	162				162
Other comprehensive (loss) income	(342)						(572)		230
Net income (loss)	(2,694)							(1,986)	(708)
Ending Balance at Mar. 31, 2021	83,424	$ 16	$ 261	$ 19,743	141,496	(9,839)	3,255	(59,014)	(12,494)
Ending Balance, Shares at Mar. 31, 2021		1,574	25,952	2,322
Beginning Balance at Dec. 31, 2020	86,079	$ 16	$ 260	$ 19,743	140,746	(9,839)	3,827	(56,658)	(12,016)
Beginning Balance, shares at Dec. 31, 2020		1,574	25,811	2,322
Net income (loss)	2,591
Ending Balance at Jun. 30, 2021	86,500	$ 16	$ 261	$ 19,743	142,056	(12,274)	3,178	(54,017)	(12,463)
Ending Balance, Shares at Jun. 30, 2021		1,574	25,952	2,322
Beginning Balance at Mar. 31, 2021	83,424	$ 16	$ 261	$ 19,743	141,496	(9,839)	3,255	(59,014)	(12,494)
Beginning Balance, shares at Mar. 31, 2021		1,574	25,952	2,322
Dividends on preferred stock	(370)							(370)
Stock Based Compensation	560				560
Stock-based compensation, shares
Issuance of Class B common stock to Howard Jonas (in shares)
Repurchase of Class B common stock from stock purchase program	(2,435)					(2,435)
Sale of subsidiary	(69)						(182)		113
Other comprehensive (loss) income	105						105
Net income (loss)	5,285							5,367	(82)
Ending Balance at Jun. 30, 2021	$ 86,500	$ 16	$ 261	$ 19,743	$ 142,056	$ (12,274)	$ 3,178	$ (54,017)	$ (12,463)
Ending Balance, Shares at Jun. 30, 2021		1,574	25,952	2,322

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Dividends on preferred stock	$ 0.1594	$ 0.01594
Dividends on common stock		$ 0.075

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities
Net income	$ 2,591	$ 7,301
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,446	1,548
Impairment of assets		993
Deferred income taxes	2,974	2,537
Provision for doubtful accounts receivable	2,539	1,215
Unrealized gain marketable equity securities and investment	(7,022)
Stock-based compensation	1,148	884
Equity in the net (income) loss in equity method investees	(164)	1,552
Gain on sale of subsidiary	(4,226)
Loss on sale of assets held for sale		78
Gain on deconsolidation of subsidiaries		(98)
Change in assets and liabilities:
Trade accounts receivable	(3,157)	6,847
Inventory	1,277	1,930
Prepaid expenses	(1,142)	2,016
Other current assets and other assets	(2,865)	223
Trade accounts payable, accrued expenses and other current liabilities	(609)	(1,006)
Contract liability	(333)	(12,707)
Due to IDT Corporation	47	(286)
Income taxes payable	625	615
Net cash (used in) provided by operating activities	(5,871)	13,642
Investing activities
Capital expenditures	(80)	(99)
Proceeds from disposal of assets held for sale		5
Proceeds from the sale of a subsidiary, net of cash disposed	4,550
Purchase of marketable equity securities	(1,000)
Investments in equity method investee		(1,502)
Payment of acquisition of intangible		(298)
Repayment of notes receivable	13	12
Net cash provided by (used in) investing activities	3,483	(1,882)
Financing activities
Dividends paid	(740)	(4,955)
Proceeds from revolving line of credit		1,000
Repayment of revolving line of credit		(3,514)
Proceeds from loan		1,395
Repayment of loan		(930)
Purchases of Class B common stock	(2,435)	(1,546)
Repayment of notes payable		(17)
Net cash used in financing activities	(3,175)	(8,567)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(54)	12
Net (decrease) increase in cash, cash equivalents, and restricted cash	(5,617)	3,205
Cash, cash equivalents, and restricted cash at beginning of period	43,184	38,554
Cash, cash equivalents, and restricted cash at end of period	$ 37,567	$ 41,759

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Basis of Presentation [Abstract]
Basis of Presentation	Note 1—Basis of Presentation The accompanying unaudited consolidated financial statements of Genie Energy Ltd. and its subsidiaries (the “Company” or “Genie”) have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. Securities and Exchange Commission (the “SEC”). The Company owns 99.3% of its subsidiary, Genie Energy International Corporation (“GEIC”), which owns 100% of Genie Retail Energy (“GRE”), 95.5% of Genie Retail Energy International LLC ("GRE International" or "GREI") and 95.5% of Genie Renewables. In March 2021, the Company modified its management reporting to rename the Genie Energy Services ("GES") segment to the Genie Renewables segment. GRE owns and operates retail energy providers (“REPs”), including IDT Energy, Inc. (“IDT Energy”), Residents Energy, Inc. (“Residents Energy”), Town Square Energy, LLC and Town Square Energy East, LLC (collectively, "TSE"), Southern Federal Power LLC ("Southern Federal") and Mirabito Natural Gas (“Mirabito”). GRE's REP businesses resell electricity and natural gas to residential and small business customers primarily in the Eastern and Midwestern United States and Texas. GRE International holds the Company's 100% interest in Shoreditch Energy Limited, a REP that serves retail customers in the United Kingdom under the name Orbit Energy, t he Company's 91.7% interest in Lumo Energia Oyj ("Lumo Finland"), a REP serving residential customers in Finland, and its 98.8% interest in Lumo Energi AB ("Lumo Sweden"), which was formed in 2019 to serve retail energy customers in Sweden. GRE International also held the Company's 98.8 % interest in venture in Japan , which the Company sold on May 11, 2021. Genie Renewables oversees Diversegy LLC (" "), a retail energy advisory and brokerage company that serves commercial and industrial customers throughout the United States, manages Prism Solar Technology, Inc. ("Prism"), a solar solutions company that is engaged in U.S.-based manufacturing of solar panels, solar installation design and solar energy project management, Genie Solar Energy, a rooftop solar system sales and general contracting company and 93.5% interest in CityCom Solar, a marketer of community solar energy solution. Energy Price Volatility in Japan and Texas In January 2021, weather volatility and the lack of adequate gas reserves significantly increased the price of energy at Japan Electric Power Exchange ("JEPX") for an extended period of time. The spike in demand associated with this situation, exposed Genie Japan to unexpected cost increases. Genie Japan incurred approximately $ million in additional costs related to the price increases, which were included in the cost of revenue in the three months ended March 31, 2021. In February of 2021, the State of Texas experienced unprecedented cold weather and snow, which was named Winter Storm Uri. With the grid overtaxed due to demand and weather-related reduced supply and rolling blackouts being enforced, by order of the Electricity Reliability Council of Texas ("ERCOT"), real-time commodity prices during the crisis escalated significantly. Although GRE's commitment for their customers in Texas was hedged for foreseen winter weather conditions, the market conditions exposed the Company to significant unexpected cost increases. In the three and six months ended June 30, 2021, GRE recognized approximately $1.0 million and $13.0 million, respectively, in additional costs related to the situation, which were included in the cost of revenue in the consolidated statements of operation. In June 2021, the state legislature of the State of Texas passed House Bill 4492 (“HB 4492”) which includes certain provisions for financing certain costs associated with electric markets caused by Winter Storm Uri. Pursuant to HB 4492, two categories of charges associated with Winter Storm Uri are to be securitized and the proceeds of the securitization will be provided to the load serving entities who originally incurred the charges. Under HB 4492, the Company is entitled to recover a portion of the costs incurred from the effect of Winter Storm Uri with a calculated range of $1.5 million to $2.6 million. For the three and six months ended June 30, 2021, the Company recorded a reduction in cost of revenues of $1.5 million. Seasonality and Weather The weather and the seasons, among other things, affect GRE’s revenues. Weather conditions have a significant impact on the demand for natural gas used for heating and electricity used for heating and cooling. Typically, colder winters increase demand for natural gas and electricity, and hotter summers increase demand for electricity. Milder winters or summers have the opposite effect. Unseasonable temperatures in other periods may also impact demand levels. Natural gas revenues typically increase in the first quarter due to increased heating demands and electricity revenues typically increase in the third quarter due to increased air conditioning use. Approximately 47.7% and 46.9% of GRE’s natural gas revenues for the relevant years were generated in the first quarters of 2020 and 2019, respectively, when demand for heating was highest. Although the demand for electricity is not as seasonal as natural gas (due, in part, to usage of electricity for both heating and cooling), approximately 31.8% of GRE’s electricity revenues for the relevant years were generated in the third quarters of 2020 and 2019. GRE’s REPs’ revenues and operating income are subject to material seasonal variations, and the interim financial results are not necessarily indicative of the estimated financial results for the full year. Coronavirus Disease (COVID- 19 Starting in the first quarter of 2020 2019 19 For the three and six months ended June 30, 2021, the impacts of COVID-19 are evident in several key aspects of the Company's business operations and the corresponding financial impact has been mixed. The Company's customer base is predominantly residential, so the Company has benefited from the increased demand for residential electricity as many customers are working from and spending more time in their homes. On the other hand, like other retail providers, the Company suspended its face-to-face customer acquisition programs in March 2020 as public health measures were implemented to combat COVID-19, resulting in a decrease in gross meter acquisitions. The reduction in gross meter acquisitions during the second quarter of 2021 resulted in a slight decline in domestic meters served during the second quarter of 2021. Churn for the second quarter of 2021 decreased, in part, as the Company's competitors also suspended their face to face marketing programs. In the fourth quarter of 2020, authorities began relaxing certain COVID-19 public health restrictions in some of GRE's domestic markets facilitating a partial reactivation of the previously curtailed customer acquisition channels. There are many uncertainties regarding the impacts of the COVID- 19

Cash, Cash Equivalents, and Res

Cash, Cash Equivalents, and Restricted Cash	6 Months Ended
	Jun. 30, 2021
Cash, Cash Equivalents, and Restricted Cash [Abstract]
Cash, Cash Equivalents, and Restricted Cash	Note 2—Cash, Cash Equivalents, and Restricted Cash The following table provides a reconciliation of cash, c ash June 30, 2021 December 31, 2020 (in thousands) Cash and cash equivalents $ 31,446 $ 36,913 Restricted cash—short-term 6,121 6,271 Total cash, cash equivalents, and restricted cash $ 37,567 $ 43,184 Restricted cash—short-term includes amounts set aside in accordance with the Amended and Restated Preferred Supplier Agreement with BP Energy Company (“BP”) (see Note Note 18

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventories [Abstract]
Inventories	Note 3—I nventories Inventories consisted of the following: June 30, 2021 December 31, 2020 (in thousands) Natural gas $ 813 $ 1,021 Renewable credits 14,642 15,574 Solar Panels: Finished goods 198 335 Totals $ 15,653 $ 16,930

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2021
Revenue Recognition [Abstract]
Revenue Recognition	Note 4 Revenue from the single performance obligation to deliver a unit of electricity and/or natural gas is recognized as the customer simultaneously receives and consumes the benefit. GRE and Genie Japan record unbilled revenues for the estimated amount customers will be billed for services rendered from the time meters were last read to the end of the respective accounting period. The unbilled revenue is estimated each month based on available per day usage data, the number of unbilled days in the period and historical trends. Several utility companies offer purchase of receivable, or POR, programs in most of the service territories in which GRE operates, and participate in POR programs for a majority of their receivables. The Company estimates variable consideration related to its rebate programs using the expected value method and a portfolio approach. The Company’s estimates related to rebate programs are based on the terms of the rebate program, the customer’s historical electricity and natural gas consumption, the customer’s rate plan, and a churn factor. Taxes that are imposed on the Company’s sales and collected from customers are excluded from the transaction price. Revenues from Orbit Energy are accrued based on an estimate of the quantity in units of electricity or natural gas supplied to customers by profile class. The estimate is made using historical consumption patterns, industry estimated consumption rates, and takes into consideration industry reconciliation processes. Revenue from sales of solar panels are recognized at a point in time following the transfer of control of the solar panels to the customer, which typically occurs upon shipment or delivery depending on the terms of the underlying contracts. For sales contracts that contain multiple performance obligations, such as the shipment or delivery of solar modules, the Company allocates the transaction price to each performance obligation identified in the contract based on relative standalone selling prices, or estimates of such prices, and recognize the related revenue as control of each individual product is transferred to the customer, in satisfaction of the corresponding performance obligations. Revenues from sale of solar panels are included in other revenues in the consolidated statements of operations. The Company recognizes the incremental costs of obtaining a contract with a customer as an asset if it expects the benefit of those costs to be longer than one year. The Company determined that certain sales commissions to acquire customers meet the requirements to be capitalized. For GRE, the Company applies a practical expedient to expense costs as incurred for sales commissions to acquire customers as the period would have been one year or less. Incremental customer acquisition cost of certain GRE International entities are capitalized and amortized over the range of between eighteen twenty-four . These costs and the related amortization are recorded within sales and marketing expenses. Total capitalized customer acquisition costs to obtain customer contracts were $0.3 million and $ three months ended June 30, 2021 and 2020 , respectively. Total capitalized customer acquisition costs to obtain customer contracts were $0.6 million an d $0.4 milli 2020 included in other current assets and other assets, respectively, on the consolidated balance sheet. The Company recognized $0.2 million of amortization of capitalized customer acquisition cost, in each of the three months ended June 30, 2021 and 2020. The Company recognized $ 0.4 2020 Disaggregated Revenues The following table shows the Company’s revenues disaggregated by pricing plans offered to customers: Electricity Natural Gas Other Total (in thousands) Three Months Ended June 30, 2021 Fixed rate $ 48,600 $ 7,538 $ — $ 56,138 Variable rate 34,714 4,238 — 38,952 Other — — 2,616 2,616 Total $ 83,314 $ 11,776 $ 2,616 $ 97,706 Three Months Ended June 30, 2020 Fixed rate $ 30,031 $ 738 $ — $ 30,769 Variable rate 35,875 4,658 — 40,533 Other — — 4,773 4,773 Total $ 65,906 $ 5,396 $ 4,773 $ 76,075 Six Months Ended June 30, 2021 Fixed rate $ 103,557 $ 21,072 $ — $ 124,629 Variable rate 83,428 19,776 — 103,204 Other — — 5,214 5,214 Total $ 186,985 $ 40,848 $ 5,214 $ 233,047 Six Months Ended June 30, 2020 Fixed rate $ 57,550 $ 2,568 $ — $ 60,118 Variable rate 78,327 18,899 — 97,226 Other — — 22,782 22,782 Total $ 135,877 $ 21,467 $ 22,782 $ 180,126 The following table shows the Company’s revenues disaggregated by non-commercial and commercial channels: Electricity Natural Gas Other Total (in thousands) Three Months Ended June 30, 2021 Non-Commercial Channel $ 65,855 $ 10,499 $ — $ 76,354 Commercial Channel 17,459 1,277 — 18,736 Other — — 2,616 2,616 Total $ 83,314 $ 11,776 $ 2,616 $ 97,706 Three Months Ended June 30, 2020 Non-Commercial Channel $ 54,783 $ 4,631 $ — $ 59,414 Commercial Channel 11,123 765 — 11,888 Other — — 4,773 4,773 Total $ 65,906 $ 5,396 $ 4,773 $ 76,075 Six Months Ended June 30, 2021 Non-Commercial Channel $ 155,059 $ 37,462 $ — $ 192,521 Commercial Channel 31,926 3,386 — 35,312 Other — — 5,214 5,214 Total $ 186,985 $ 40,848 $ 5,214 $ 233,047 Six Months Ended June 30, 2020 Non-Commercial Channel $ 115,754 $ 19,004 $ — $ 134,758 Commercial Channel 20,123 2,463 — 22,586 Other — — 22,782 22,782 Total $ 135,877 $ 21,467 $ 22,782 $ 180,126 Contract Liabilities Certain revenue contracts at Genie Renewables include provisions that require advance payment from customers. These advance payments received under revenue contracts are recognized as revenue as the Company satisfies the performance obligations to the other party. A portion of the transaction price allocated to the performance obligations to be satisfied in the future periods is recognized as contract liability. Customers of Orbit Energy can elect to be on a budget plan. Under this type of plan, a monthly installment amount is calculated based on estimated annual usage. Contract liabilities are adjusted monthly based on actual and estimated usage of the customers. Annually, the budget plan is reconciled to actual annual usage. The following table summarized the changes in the liabilities. Six Months Ended June 30, 2021 2020 (in thousands) Contract liability, beginning $ 5,609 $ 13,426 Recognition of revenue included in the beginning of year contract liability (3,262 ) (12,971 ) Additions during the period, net of revenue recognized during the period 2,701 379 Cumulative translation adjustments 169 — Contract liability, end $ 5,217 $ 834

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2021
Acquisition [Abstract]
Acquisition	Note 5—Acquisition and Divestiture Acquisition of Controlling Interest of Shoreditch Energy Limited On July 17, 2017 2020 October 8, 2020. October 8, 2020 Prior to the Company acquiring the remain ing 23.0% o f Shoreditch, EGC had significant participation rights in the management of Shoreditch that limited GEUK’s ability to direct the activities that most significantly impact Shoreditch’s economic performance. GEUK, therefore, accounted for its ownership interest in Shoreditch using the equity method since GEUK had the ability to exercise significant influence over its operating and financial matters, although it did not control Shoreditch. On October 8, 2020 2018 nil Following the transaction, EGC has no rights in the management of Shoreditch and GEUK has complete control over the activities of Shoreditch. The Company conducted an assessment of assets and liabilities related to the acquisition of Shoreditch. The impact of the acquisition’s purchase price allocations on the Company’s consolidated balance sheet and the acquisition date fair value of the total consideration transferred were as follows: (in thousands) Cash $ 2,681 Trade accounts receivable 8,008 Other current assets 843 Intangible assets: Trademark (10-year useful life) 1,594 Non-compete agreements (2-year useful life) 1,956 Customer relationships (2-year useful life) 3,620 Goodwill 13,426 Other assets 657 Accounts and other current liabilities (20,490 ) Noncontrolling interest (5,152 ) Net assets $ 7,143 Goodwill was allocated to the GRE International segment. Goodwill is the excess of the consideration transferred over the net assets recognized and represents the expected revenue and cost synergies of the combined company and assembled workforce. Goodwill recognized as a result of the acquisition is not deductible for income tax purposes. The Company recognized a gain of $5.5 million upon consolidation of Orbit Energy in the consolidated statement of operations for the year ended December 31, 2020, pertaining to the estimated fair value of the Company's noncontrolling interest prior to the acquisition, which is based on the amount paid by the Company for the remaining 23.0% of Shoreditch. The net book value of the Company's investments in Shoreditch was nil immediately prior to the acquisition. Divestiture of Genie Japan In March 2021, the Company initiated a plan to sell certain assets and liabilities of Genie Japan. In the first quarter of 2021 , certain assets and liabilities of Genie Japan were reclassified as assets and liabilities held for sale and reported at lower of fair value less cost to sell and net book value. On April 26, 2021, the Company entered into an Equity Purchase Agreement ("Purchase Agreement") with Hanhwa Q Cells Japan Co., Ltd. ("Hanhwa"), pursuant to which, the Company has agreed to sell its interest in Genie Japan for ¥ 570.0 5.3 570.0 5.2 0.6 4.2 The assets and liabilities divested which was previously classified as held for sale as of March 31, 2021 included the following: (in t hou Cash $ 83 Trade accounts receivable `1,737 Prepaid and other current assets 391 Intangible (license) 540 Other noncurrent assets 296 Accounts payable (611 ) Accrued expenses and other current liabilities (588 ) Loans payable (1,372 ) Cumulative translation adjustment (181 ) Noncontrolling interest 114 Liabilities held for sale included in other current liabilities $ 409 The assets and liabilities were included in GRE International segment. Pro forma Results (unaudite The following unaudited pro forma financial information summarizes the results of operations for the three and six months ended June 30, 2021 and 2020 as if the acquisition of Orbit Energy and the divestiture of Genie Japan had been completed as of the beginning of 2020. The pro forma results are based upon certain assumptions and estimates, and they give effect to actual operating results prior to the acquisitions and adjustments to reflect (i) the change in depreciation expense and intangible assets amortization, (ii) timing of recognition of gain on consolidation of subsidiary of $5.5 million, and (iii) timing of recognition of gain from sale of subsidiary of $4.2 million which will not be recurring in the post-acquisition period. No effect has been given to other cost reductions or operating synergies. As a result, these pro forma results do not necessarily represent results that would have occurred if the acquisitions had taken place on the basis assumed above, nor are they indicative of the results of future combined operations (amounts in thousands except for earnings per share information). Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Total revenues $ 96,946 $ 89,180 $ 229,117 $ 210,836 Net income 1,304 5,098 1,753 14,487 Net income attributable to Genie Energy Ltd. common stockholders 1,016 6,158 1,769 14,543 Earnings per share attributable to Genie energy Ltd. common stockholders Basic 0.04 0.24 0.07 0.56 Diluted 0.04 0.23 0.07 0.54

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2021
Fair Value Measurements [Abstract]
Fair Value Measurements	Note 6—Fair Value Measurements The following table presents the balance of assets and liabilities measured at fair value on a recurring basis: Level 1 (1) Level 2 (2) Level 3 (3) Total (in thousands) June 30, 2021 Assets: Marketable equity securities $ 13,370 $ — $ — $ 13,370 Derivative contracts $ 3,292 $ 703 $ — $ 3,995 Liabilities: Derivative contracts $ 591 $ — $ — $ 591 December 31, 2020 Assets: Marketable equity securities $ 5,089 $ — $ — $ 5,089 Other current assets (Investments in warrants) $ — $ — $ 259 $ 259 Derivative contracts $ 1,237 $ 118 $ — $ 1,355 Liabilities: Derivative contracts $ 286 $ — $ — $ 286 (1) – quoted prices in active markets for identical assets or liabilities (2) – observable inputs other than quoted prices in active markets for identical assets and liabilities (3) – no observable pricing inputs in the market The Company’s derivative contracts consist of natural gas and electricity put and call options and swaps. The underlying asset in the Company’s put and call options is a forward contract. The Company’s swaps are agreements whereby a floating (or market or spot) price is exchanged for a fixed price over a specified period. The Company did not have any transfers of assets or liabilities between Level 1, Level 2 or Level 3 of the fair value measurement hierarchy during the period ended June 30, 2021 and 2020. Fair Value of Other Financial Instruments The estimated fair value of the Company’s other financial instruments was determined using available market information or other appropriate valuation methodologies. However, considerable judgment is required in interpreting this data to develop estimates of fair value. Consequently, the estimates are not necessarily indicative of the amounts that could be realized or would be paid in a current market exchange. Restricted cash—short-term and long-term, trade receivables, due to IDT Corporation, other current assets and other current liabilities. At June 30, 2021 and December 31, 2020, the carrying amounts of these assets and liabilities approximated fair value. The fair value estimate for restricted cash—short-term and long-term was classified as Level 1. The carrying value of other current assets, due to IDT Corporation, and other current liabilities approximated fair value Other assets, revolving line of credit and notes payable. At June 30, 2021 and December 31, 2020, other assets included notes receivable. At June 30, 2021 The primary non-recurring fair value estimates typically are in the context of business acquisitions (Note 5) which involve a combination of Level 2 and Level 3 inputs, goodwill impairment testing, which involves Level 3 inputs, and asset impairments (Note 8) which utilize Level 3 inputs. Concentration of Credit Risks The Company holds cash, cash equivalents, and restricted cash at several major financial institutions, which may exceed Federal Deposit Insurance Corporation insured limits. Historically, the Company has not experienced any losses due to such concentration of credit risk. The Company’s temporary cash investments policy is to limit the dollar amount of investments with any one financial institution and monitor the credit ratings of those institutions. While the Company may be exposed to credit losses due to the nonperformance of the holders of its deposits, the Company does not expect the settlement of these transactions to have a material effect on its results of operations, cash flows or financial condition. The following table summarizes the percentage of consolidated revenues from customers that equal or exceed 10.0 % of the Company’s consolidated revenues in the period (no other single customer accounted for more than 10.0 % of consolidated revenues in these periods): Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Customer A 11 % 13 % na % na % Customer B na na na 10 na-less than 10.0% of consolidated revenue in the period At June 30, 2021 and December 31, 2020 no single customer accounted for 10.0% or greater of our consolidated trade receivables.

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2021
Derivative Instruments [Abstract]
Derivative Instruments	Note 7 — The primary risk managed by the Company using derivative instruments is commodity price risk, which is accounted for in accordance with Accounting Standards Codification 815 — Derivatives and Hedging. Natural gas and electricity put and call options and swaps are entered into as hedges against unfavorable fluctuations in market prices of natural gas and electricity. The Company does not apply hedge accounting to these options or swaps, therefore the changes in fair value are recorded in earnings. By using derivative instruments to mitigate exposures to changes in commodity prices, the Company exposes itself to credit risk and market risk. Credit risk is the failure of the counterparty to perform under the terms of the derivative contract. When the fair value of a derivative contract is positive, the counterparty owes the Company, which creates credit risk. The Company minimizes the credit or repayment risk in derivative instruments by entering into transactions with high-quality counterparties. At June 30, 2021, GRE’s swaps and options were traded on the Intercontinental Exchange. GRE International's swaps and options were traded through counterparties. The summarized volume of GRE’s outstanding contracts and options at June 30, 2021 was as follows (MWh – Megawatt hour and Dth – Decatherm): Settlement Dates Volume Electricity (in MWH) Gas (in Dth) Third quarter 2021 367,748 89,750 Fourth quarter 2021 374,221 286,750 First quarter 2022 620,484 172,900 Second quarter 2022 78,285 54,950 Third quarter 2022 39,936 43,790 Fourth quarter 2022 74,379 50,600 First quarter 2023 9,216 71,000 Second quarter 2023 9,216 17,900 Third quarter 2023 9,072 17,050 Fourth quarter 2023 9,072 18,600 First quarter 2024 — 20,850 Second quarter 2024 4,700 The fair value of outstanding derivative instruments recorded in the accompanying consolidated balance sheets were as follows: Asset Derivatives Balance Sheet Location June 30, 2021 December 31, 2020 (in thousands) Derivatives not designated or not qualifying as hedging instruments: Energy contracts and options 1 Other current assets $ 3,741 $ 1,338 Energy contracts and options Other assets 254 17 Total derivatives not designated or not qualifying as hedging instruments — $ 3,995 $ 1,355 Liability Derivatives Balance Sheet Location June 30, December 31, Derivatives not designated or not qualifying as hedging instruments: Energy contracts and options 1 Other current liabilities $ 403 245 Energy contracts and options Other liabilities 188 41 Total derivatives not designated or not qualifying as hedging instruments — Liabilities $ 591 $ 286 ( 1 The Company classifies derivative assets and liabilities as current based on the cash flows expected to be incurred within the following 12 . The effects of derivative instruments on the consolidated statements of operations was as follows: Amount of Gain (Loss) Recognized on Derivatives Derivatives not designated or not qualifying as Location of Gain (Loss) Recognized Three Months Ended June 30, Six Months Ended June 30, hedging instruments on Derivatives 2021 2020 2021 2020 (in thousands) (in thousands) Energy contracts and options Cost of revenues $ 1,908 $ (6,200 ) $ 4,795 $ (18,589 )

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2021
Goodwill and Other Intangible Assets [Abstract]
Goodwill and Other Intangible Assets	Note 8—Goodwill and Other Intangible Assets The table below reconciles the change in the carrying amount of goodwill for the period from January 1, 2021 to June 30, 2021: GRE GRE International Genie Renewables Total (in thousands) Balance at January 1, 2021 $ 9,998 $ 15,931 $ — $ 25,929 Cumulative translation adjustment — 112 — 112 Balance at June 30, 2021 $ 9,998 $ 16,043 $ — $ 26,041 In the fourth quarter of 2020, the Company performed quantitative impairment analysis for its Prism reporting unit (part of the Genie Renewables segment) as a result of lower than expected results of operations in 2020. As a result of this test, the Company concluded that the carrying value Prism reporting unit exceeded its fair value of reporting unit including the allocated goodwill. Therefore, the Company recognized a goodwill impairment charge of $0.4 million. The table below presents information on the Company’s other intangible assets: Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Balance (in thousands) June 30, 2021 Patents and trademarks 14.9 years $ 5,526 $ 1,101 $ 4,425 Non-compete agreements 2.0 years 2,120 811 1,309 Customer relationships 3.6 years 4,958 1,915 3,043 Licenses 10.0 years 479 79 400 Total $ 13,083 $ 3,906 $ 9,177 December 31, 2020 Trademark 14.9 years $ 5,534 $ 878 $ 4,656 Non-compete agreement 2.0 years 2,096 75 2,021 Customer relationships 3.1 years 6,907 2,922 3,985 Licenses 10.0 years 1,224 241 983 Total $ 15,761 $ 4,116 $ 11,645 In the second quarter of 2020, Prism renegotiated a contract with its main customer which resulted in impairment of customer relationship of $0.8 million included in the consolidated statements of operations. Amortization expense of intangible assets (including minimal amounts reported in cost of revenues) was $ 1.1 million and $ 2.4 million in the three six months ended June 30, 2021 , respectively. Amortization expense of intangible assets (including minimal amounts reported in cost of revenues) three six months ended June 30, 2020 million, $2.8 million, $0.6 million, $0.6 million, $0.6 million

Accrued Expenses

Accrued Expenses	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Accrued Expenses	Note 9—Accrued Expenses Accrued expenses consisted of the following: June 30, 2021 December 31, 2020 (in thousands) Renewable energy $ 35,794 $ 26,474 Liability to customers related to promotions and retention incentives 9,078 9,558 Payroll and employee benefit 2,156 3,534 Other accrued expenses 2,076 3,196 Total accrued expenses $ 49,104 $ 42,762

Leases

Leases	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Leases	Note 10—Leases The Company entered into operating lease agreements primarily for offices in domestic and foreign locations where it has operations with lease periods expiring between 2021 2030. The Company has no finance leases. The Company determine if a contract is a lease at inception. Right-of-Use ("ROU") assets are included under other assets in the consolidated balance sheet. The current portion of the operating lease liabilities are included in other current liabilities and the noncurrent portion is included in other liabilities in the consolidated balance sheet. ROU assets and operating lease liabilities are recognized at the present value of the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is the incremental borrowing rate, because the interest rate implicit in most of our leases is not readily determinable. The incremental June 30, 2021 December 31, 2020 (in thousands) ROU Assets $ 3,656 $ 4,409 Current portion of operating lease liabilities 1,060 1,327 Noncurrent portion of operating lease liabilities 2,772 3,233 Total $ 3,832 $ 4,560 At June 30, 2021, the weighted average remaining lease term is 4.9 Supplemental cash flow information for ROU assets and operating lease liabilities are as follows: Six Months Ended June 30, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: (in thousands) Operating cash flows from operating activities $ 985 $ 431 ROU assets obtained in the exchange for lease liabilities Operating leases $ — $ — Future lease payments under operating leases as of June 30, 2021 were as follows: (in thousands) Remainder of 2021 $ 616 2022 1,193 2023 1,162 2024 225 2025 233 Thereafter 1,072 Total future lease payments 4,501 Less imputed interest (669 ) Total operating lease liabilities $ 3,832 Rental expenses under operating leases were and $1.0 million in the three and six months ended June 30, 2021. Rental expenses under operating leases were $0.2 million and $0.4 million in the three and six months ended June 30, 2020.

Equity

Equity	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Equity	Note 11—Equity Dividend Payments The following table summarizes the quarterly dividends paid by the Company during the six months ended June 30, 2021 (in thousands, except per share amounts): Declaration Date Dividend Per Share Aggregate Dividend Amount Record Date Payment Date Series 2012-A Preferred Stock (“Preferred Stock”) January 13, 2021 $ 0.1594 $ 370 February 8, 2021 February 16, 2021 April 14, 2021 0.1594 370 April 27, 2021 May 17, 2021 In March 2021, in light of the losses incurred from the effects of events in Texas and Japan discussed above, the Company suspended the payment of quarterly dividends on its common stock. On July 8, 2021, the Company’s Board of Directors declared a quarterly Base Dividend of $ per share on the Preferred Stock for the quarter of . The dividend will be paid on or about to stockholders of record as of the close of business . The Delaware General Corporation Law allows companies to declare dividends out of “Surplus,” which is calculated by deducting the par value of the company’s stock from the difference between total assets and total liabilities. The Company has elected to record dividends declared against accumulated deficit. Stock Repurchase Program On March 11, 2013, the Board of Directors of the Company approved a program for the repurchase of up to an aggregate of 7.0 million shares of the Company’s Class B common stock. In the three and six months ended June 30, 2021, the Company acquired 392,932 Class B common stock under the stock purchase program for an aggregate amount of $2.4 million. In the three months ended June 30, 2020, the Company acquired 200,873 Class B common stock under the stock purchase program for an aggregate amount of $1.5 million. In the six months ended June 30, 2020, the Company acquired 213,206 1.5 At June 30, 2021, 5.5 million shares remained available for repurchase under the stock repurchase program. As of June 30, 2021 and December 31, 2020, there were 1.7 million and 1.3 million outstanding shares of Class B common stock held in the Company's treasury, respectively, with a cost of $12.3 million and $9.8 million, respectively, at a weighted average cost per share of $7.17 In July 7, 2021, the Company acquired 125,000 Class B common stock under the stock repurchase program for an aggregate amount of $0.8 million. Warrants to Purchase Class B Common Stock On June 8, 2018, the Company sold to Howard S. Jonas, the Chairman of the Company’s Board of Directors and then the holder of the controlling portion of the Company's common stock, shares of the Company’s Class B common stock and warrants to purchase an additional 1,048,218 shares of the Company’s Class B common stock at an exercise price of $4.77 per share for an aggregate exercise price of $5.0 million. The warrants will expire in June 2023 , there were outstanding 1,257,862 warrants to purchase the Company’s Class B common stock at $4.77 per share, all of which will expire in June 2023 Stock-Based Compensation The Company’s 2011 Stock Option and Incentive Plan (as amended, the "2011 Plan") is intended to provide incentives to executives, employees, directors and consultants of the Company. Incentives available under the Plan include stock options, stock appreciation rights, limited rights, deferred stock units, and restricted stock. The 2011 Plan, is scheduled to expire on October 24, 2021 . On March 8, 2021, the Board of Directors adopted the Company 2021 Stock Option and Incentive Plan (the "2021 Plan"). The 2021 Plan, was approved by the Company's stockholders in May 2021, became effective and replaced the 2011 Plan on May 12, 2021. Similar to the 2011 Plan, the 2021 Plan will provide incentives to executives, employees, directors and consultants of the Company. Incentives available under the 2021 Plan include stock options, stock appreciation rights, limited stock appreciation rights, deferred stock units, and restricted stock. The Plan is administered by the Compensation Committee of the Company’s Board of Directors. The maximum number of shares reserved for the grant of awards under the 2021 Plan is 1.0 million shares of Class B Common Stock. In February 2020, the Company granted certain employees and members of its Board of Directors an aggregate of 305,000 deferred stock units, which were subject to vesting in two tranches upon the achievement of a specified thirty-day average closing price of the Company's Class B common stock within specified periods of time (the "2020 market conditions") and the satisfaction of service-based vesting conditions. Each deferred stock unit entitled the grantee to receive, upon vesting, up to two shares of Class B common stock of the Company upon achievement of market conditions. The 2020 market conditions were not achieved and the awards expired in February 2021. There was no expense recognized for these awards. In February 2021, the Company granted certain employees and members of its Board of Directors an aggregate of 305,000 deferred stock units which will vest in two tranches contingent upon the achievement of a specified thirty-day average closing price of the Company's Class B common stock within a specified period of time (the "2021 market conditions") and the satisfaction of service-based vesting conditions. Each deferred stock unit entitles the recipient to receive, upon vesting, up to two shares of Class B common stock of the Company depending on market conditions. The Company used a Monte Carlo simulation model to estimate the grant-date fair value of the awards. Assumptions and estimates utilized in the model include the risk-free interest rate, dividend yield, expected stock volatility based on a combination of the Company’s historical stock volatility. The 2021 market conditions for vesting of deferred stock units were not met as of June 30, 2021 . As of , there were approximately $4.8 million of total unrecognized stock-based compensation costs related to outstanding and unvested equity-based grants. These costs are expected to be recognized over a weighted-average period of approximately years.

Variable Interest Entity

Variable Interest Entity	6 Months Ended
	Jun. 30, 2021
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liability, Net [Abstract]
Variable Interest Entity	Note 12—Variable Interest Entity Citizens Choice Energy, LLC (“CCE”), is a REP that resells electricity and natural gas to residential and small business customers in the State of New York. The Company does not own any interest in CCE. Since 2011, the Company has provided CCE with substantially all of the cash required to fund its operations. The Company determined that it has the power to direct the activities of CCE that most significantly impact its economic performance and it has the obligation to absorb losses of CCE that could potentially be significant to CCE on a stand-alone basis. The Company therefore determined that it is the primary beneficiary of CCE, and as a result, the Company consolidates CCE within its GRE segment. The net income or loss incurred by CCE was attributed to noncontrolling interests in the accompanying consolidated statements of operations. The Company has an option to purchase 100% of the issued and outstanding limited liability company interests of CCE for one dollar plus the forgiveness of $0.5 million that the Company loaned to CCE in October 2015. The option expires on October 22, 2023. Net loss related to CCE and aggregate net funding provided by the Company were as follows: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in thousands) (in thousands) Net loss $ 52 $ 411 $ 373 $ 748 Aggregate funding provided by the Company, net $ 125 $ 282 $ 528 $ 522 Summarized combined balance sheet amounts related to CCE was as follows: June 30, 2021 December 31, 2020 (in thousands) Assets Cash, cash equivalents and restricted cash $ 687 $ 491 Trade accounts receivable 380 433 Prepaid expenses and other current assets 381 416 Other assets 359 359 Total assets $ 1,807 $ 1,699 Liabilities and noncontrolling interests Current liabilities $ 471 $ 518 Due to IDT Energy 4,650 4,122 Noncontrolling interests (3,314) (2,941 ) Total liabilities and noncontrolling interests $ 1,807 $ 1,699 The assets of CCE may only be used to settle obligations of CCE, and may not be used for other consolidated entities. The liabilities of CCE are non-recourse to the general credit of the Company’s other consolidated entities.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Taxes [Abstract]
Income Taxes	Note 13—Income Taxes The following table provides a summary of Company's effective tax rate: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Reported tax rate 37.4 % 40.0 % 58.8 % 30.2 % Reported tax rate for the three months ended June 30, 2021 was 37.4%, a slight decrease as compared to the same period in 2020 .

Earnings (Loss) Per Share

Earnings (Loss) Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Earnings Per Share	Note 14— Earnings Per Share Basic earnings per share is computed by dividing net income or loss attributable to all classes of common stockholders of the Company by the weighted average number of shares of all classes of common stock outstanding during the applicable period. Diluted earnings per share is computed in the same manner as basic earnings per share, except that the number of shares is increased to include restricted stock still subject to risk of forfeiture and to assume exercise of potentially dilutive stock options using the treasury stock method, unless the effect of such increase is anti-dilutive. The weighted-average number of shares used in the calculation of basic and diluted earnings per share attributable to the Company’s common stockholders consists of the following: Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in (in Basic weighted-average number of shares 25,804 26,087 25,903 26,098 Effect of dilutive securities: Stock options and warrants 353 629 468 583 Non-vested restricted Class B common stock 70 137 75 123 Diluted weighted-average number of shares 26,227 26,853 26,446 26,804 The following shares were excluded from the diluted earnings per share computations: Three Months Ended June 30, 2021 2020 2021 2020 (in (in Shares underlying options and warrants 295 126 295 126 Non-vested deferred stock units 610 610 610 610 Stock options were ex Non-vested deferred stock units were excluded from the basic and diluted weighted average shares outstanding calculation because the market condition for vesting of those deferred stock units were not met as of June 30, 2021 and 2020.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 15—Related Party Transactions In December 2020, the Company invested $5.0 million to purchase 218,245 shares of Class B common stock of Rafael Holdings, Inc. ("Rafael"). Rafael, a publicly-traded company, is also a related party. In connection with the purchase, Rafael issued to the Company warrants to purchase an additional 43,649 shares of Rafael's Class B common stock with an exercise price of $22.91 per share. The warrants had a term expiring on June 6, 2022. The Company exercised the warrants in full on March 31, 2021 for a total exercise price of $1.0 million. The Company does not exercise significant influence over the operating or financial policies of Rafael. For the three and six months ended June 30, 2021, the Company recognized unrealized gain on investment of $2.9 million and $6.5 million, respectively, in connection with the investment. At June 30, 2021, the carrying values of investments in the common stock was $13.4 million. The Company was formerly a subsidiary of IDT Corporation (“IDT”). On October 28, 2011, the Company was spun-off by IDT. The Company entered into various agreements with IDT prior to the spin-off including an agreement for certain services to be performed by the Company and IDT. The Company also provides specified administrative services to certain of IDT’s foreign subsidiaries. Howard S. Jonas is the Chairman of the Board of IDT. The Company leases office space and parking in New Jersey from Rafael a former subsidiary of IDT that was spun off from IDT in March 2018. Howard S. Jonas is the Chairman of the Board of Directors of Rafael. The leases expire in April 2025. The charges for services provided by IDT to the Company, and rent charged by Rafael, net of the charges for the services provided by the Company to IDT, are included in “Selling, general and administrative” expense in the consolidated statements of operations. Three Months Ended Six Months Ended June 30, 2021 2020 2021 2020 (in thousands) (in thousands) Amount IDT charged the Company $ 268 $ 249 $ 518 $ 520 Amount the Company charged IDT $ 33 $ 41 $ 72 $ 79 Amount Rafael charged the Company $ 57 $ 56 $ 113 $ 111 The following table presents the balance of receivables and payables to IDT and Rafael: June 30, 2021 December 31, 2020 (in thousands) Due to IDT $ 338 $ 299 Due from IDT $ 34 $ 40 Due to Rafael $ — $ — On August 31, 2018, the Company extended a loan to a former employee for $0.1 million. The loan agreement required scheduled payments starting on December 31, 2020 and December 2052. The loan bears the same interest equivalent to a minimum rate, in effect from time to time required by local regulations and is compounded annually. The Company recorded minimal amounts of interest income for the three and six months ended June 30, 2021 and 2020 related to this debt. The outstanding balance, including accrued interest was $0.1 million as of June 30, 2021. The Company obtains insurance policies through several insurance brokers, one Investments in Atid 613 In September 2018, the Company divested a majority interest in Atid Drilling Ltd. in exchange for a 37.5% interest in a contracting drilling company in Israel ("Atid 613") which the Company accounts for using equity method of accounting. The Company also entered into a Shareholder Agreement with Atid 613's other shareholders to govern certain issues regarding management of the new company. Under the Shareholder Agreement, among other things, Genie Israel has agreed to make available to Atid 613 working capital financing up to $0.4 million ("Credit Facility"). The credit Facility bears a variable interest rate as defined in the Shareholder Agreement. As of June 30, 2021, the outstanding balance of Credit Facility was nil. On August 12, 2019, the Company, together with the other shareholders of Atid 613 signed a Funding Agreement to provide aggregate loans to Atid 613 in an amount of up to New Israeli Shekel or NIS 5.1 million (equivalent to $1.5 million at June 30, 2021), including the Company's commitment to extend up to NIS1.9 million (equivalent to $0.5 million at June 30, 2021) of such amount. In August 2019, the Company extended NIS0.8 million (equivalent to $0.2 million) in loans. The loans which are secured by Atid 613’s assets bore no interest until March 1, 2020 and bore interest at 5.5% for all subsequent periods. In May 2021 Atid 613 paid the outstanding balance of the loan of $ 0.2 million. At June 30, 2021, the balance of loan receivables from Atid 613 was nil

Business Segment Information

Business Segment Information	6 Months Ended
	Jun. 30, 2021
Business Segment Information [Abstract]
Business Segment Information	Note 16—Business Segment Information The Company h as r In June 30, 2021, the Company modified its management reporting to rename its GES Renewables." Its REP businesses resell electricity and natural gas to residential and small business customers in the Eastern and Midwestern United States and Texas. GRE International, operates REPs in the United Kingdom, Finland and Sweden. orporate costs include unallocated compensation, consulting fees, legal fees, business development expenses and other corporate-related general and administrative expenses. Corporate does not generate any revenues, nor does it incur any cost of revenues. The Company’s reportable segments are distinguished by types of service, customers and methods used to provide their services. The operating results of these business segments are regularly reviewed by the Company’s chief operating decision-maker. The accounting policies of the segments are the same as the accounting policies of the Company as a whole. The Company evaluates the performance of its business segments based primarily on income (loss) from operations. There are no significant asymmetrical allocations to segments. Opera ting r (in thousands) GRE GRE International Genie Renewables Corporate Total Three Months Ended June 30, 2021 Revenues $ 66,977 $ 28,385 $ 2,344 $ — $ 97,706 Income (loss) from operations 5,509 (3,035) 334 (1,452) 1,356 Depreciation and amortization 88 1,016 11 — 1,115 Equity in the net income of equity method — — — 53 53 Three Months Ended June 30, 2020 Revenues $ 66,472 $ 5,037 $ 4,566 $ — $ 76,075 Income (loss) from operations 5,957 (607 ) (1,113 ) (1,507 ) 2,730 Impairment of assets — — 801 — 801 Depreciation and amortization 117 495 95 15 722 Equity in net loss of equity method — (1,502 ) — 329 (1,173 ) Six Months Ended June 30, 2021 Revenues $ 157,644 $ 70,571 $ 4,832 $ — $ 233,047 Income (loss) from operations 6,712 (9,695) 894 (3,130) (5,219) Depreciation and amortization 205 2,217 23 1 2,446 Equity in the net income of equity method investees — — — 164 164 Six Months Ended June 30, 2020 Revenues $ 145,617 $ 11,990 $ 22,519 $ — $ 180,126 Income (loss) from operations 18,974 (3,127 ) (771) (3,133 ) 11,943 Depreciation and amortization 230 986 303 29 1,548 Equity in net loss of equity method investees — (1,502 ) — (50) (1,552 ) Total assets for the business segments of the Company wer e as (in thousands) GRE GRE International Genie Renewables Corporate Total Total assets: June 30, 2021 $ 101,026 $ 48,558 $ 2,699 $ 32,843 $ 185,126 December 31, 2020 101,904 55,273 3,171 26,991 187,339

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 17 Legal Proceedings On February 18, 2020, named Plaintiff Danelle Davis filed a putative class action complaint against Residents Energy and GRE in United States District of New Jersey alleging violations of the Telephone Consumer Protection Act, 47 § 227 Although Residents Energy and GRE deny any wrongdoing in connection with the complaints, the parties settled the matter for a minimal amount In addition to the matters disclosed above, the Company may from time to time be subject to legal proceedings that arise in the ordinary course of business. Although there can be no assurance in this regard, the Company does not expect any of those legal proceedings to have a material adverse effect on the Company’s results of operations, cash flows or financial condition. Agency and Regulatory Proceedings From time to time, the Company receives inquiries or requests for information or materials from public utility commissions or other governmental regulatory or law enforcement agencies related to investigations under statutory or regulatory schemes, and the Company responds those inquiries or requests. The Company cannot predict whether any of those matters will lead to claims or enforcement actions or whether the Company and the regulatory parties will enter into settlements before a formal claim is made. New York Public Service Commission Orders In December 2017, the New York Public Service Commission (“PSC”) held an evidentiary hearing to assess the retail energy market in New York. On December 12, 2019, following the completion of post-hearing briefings in the proceedings, the PSC issued orders adopting the changes to the New York retail energy market, effective April 16, 2021 (" 2021 2021 Although the Company is working to ensure that its products and services are fully compatible with the 2021 The Company is evaluating its options, both by itself and in tandem with other industry participants, to challenge or petition for additional clarity and changes to the 2021 There is insufficient basis to deem any loss probable or to assess the amount of any possible loss based on the changes instituted by the 2021 For the three and six months ended June 30, 2021 gross revenue from New York was $10.3 million and $ 27.4 State of Connecticut Public Utilities Regulatory Authority Town Square On September 19, 2018, the State of Connecticut Public Utilities Regulatory Authority (“PURA”) commenced an investigation into Town Square following customer complaints of allegedly misleading and deceptive sales practices on the part of Town Square. The Connecticut Office of Consumer Counsel subsequently joined in the investigation. PURA notified Town Square that it was advancing its investigation by assigning Prosecutorial ("PRO") staff for the purpose of investigating Town Square’s compliance with licensed electric supplier billing, marketing, and licensing requirements, and, if appropriate, facilitating settlement discussions among the parties that contains, but is not limited to, an appropriate civil penalty, extensive retraining of the supplier’s third-party agents, and retention of all sales calls with continued auditing. In the first quarter of 2021, Town Square engaged in settlement discussions with PURA and accrued $0.4 million in the first quarter of 2021. In July, the parties settled the dispute. Pursuant to the terms of the settlement agreement, Town Square will pay $ 0.4 million. 15 months For the three and six months ended June 30, 2021 6.5 million and $15.9 Residents Energy In August 2020, Residents Energy began marketing retail energy services to Connecticut. For the three and six months ended June 30, 2021, Residents Energy's gross revenues from sales in Connecticut were $ 0.1 19 2021 accrued $ 0.3 In June 2021, the parties settled the dispute. Pursuant to the terms of the settlement agreement, Residents Energy paid $0.3 million and volunteered to withdraw from the market in Connecticut for a period of 36 months. Other Reviews or Investigations From time to time regulators may initiate reviews, compliance checks or issue subpoenas for information as means to evaluate the Company and its subsidiaries’ compliance with applicable laws, rules, regulations and practices. On October 25, 2019, the Office of the Attorney General of the State of Illinois ("IL AG") notified Residents Energy (by way of subpoena) that it is conducting an investigation to assess compliance with the Illinois Consumer Fraud and Deceptive Business Practices Act. The notice was issued in the form of a subpoena in the course of the foregoing. The Company, which has responded in part, has challenged the merits of the subpoena and investigation which it believes is precluded by the broader settlement with IDT Energy. The IL AG is seeking to compel Residents Energy's response to its subpoena. Residents Energy denies any wrongdoing on its part. As of June 30, 2021, no claims or demands have been made against Residents Energy by the IL AG, and there is insufficient basis to deem any loss probable or to assess the amount of any possible loss. For the three and six months ended June 30, 2021 4.9 million and $ In response to certain customers complaints, the State of Maine Public Utility Commission ("MPUC") has opened a review of the door to door marketing practices of Town Square. In connection with the review, the MPUC has requested information from Town Square demonstrating compliance in the form of an order to show cause as to why its marketing practices are in compliance and it should be permitted to continue licensed operations in Maine. Town Square has responded to the request and is cooperating with MUPC's review. As of June 30, 2021, no claims or demands have been made against Town Square by MPUC, and there is insufficient basis to deem any loss probable or to assess the amount of any possible loss. Nevertheless, the parties are engaging in settlement discussions. For the three and six months ended June 30, 2021 0.3 Other Commitments Purchase Commitments The Company had future purchase commitments of $145.0 million at June 30, 2021, of which $90.1 million was for future purchase of electricity. The purchase commitments outstanding as of June 30, 2021 are expected to be paid as follows: (in thousands) Remainder of 2021 $ 72,759 2022 45,246 2023 22,690 2024 3,890 2025 418 Thereafter — Total payments $ 145,003 In three months ended June 30, 2021, the Company purchased $6.6 million and $5.8 million of electricity and renewable energy credits, respectively, under these purchase commitments. In the six months ended June 30, 2021 6.5 8.4 In three months ended June 30, 2020, the Company purchased $9.9 million and $2.9 million of electricity and renewable energy credits, respectively, under these purchase commitments. six months ended June 30, 2020 Renewable Energy Credits GRE must obtain a certain percentage or amount of its power supply from renewable energy sources in order to meet the requirements of renewable portfolio standards in the states in which it operates. This requirement may be met by obtaining renewable energy credits that provide evidence that electricity has been generated by a qualifying renewable facility or resource. At June 30, 2021, GRE had commitments to purchase renewable energy credits of $54.9 million. Performance Bonds GRE has performance bonds issued through a third party for certain utility companies and for the benefit of various states in order to comply with the states’ financial requirements for REPs. At June 30, 2021, GRE had aggregate performance bonds of $13.8 million outstanding. BP Energy Company Preferred Supplier Agreement Certain of GRE’s REPs are party to an Amended and Restated Preferred Supplier Agreement with BP, which is to be in effect through November 30, 2023. Un der the agreement, the REPs purchase electricity and natural gas at market rate plus a fee. The obligations to BP are secured by a first security interest in deposits or receivables from utilities in connection with their purchase of the REPs’ customer’s receivables, and in any cash deposits or letters of credit posted in connection with any collateral accounts with BP. The ability to purchase electricity and natural gas under this agreement is subject to satisfaction of certain conditions including the maintenance of certain covenants. At June 30, 2021, the Company was in compliance with such covenants. At June 30, 2021, restricted cash—short-term of $ $ $ Shell Exclusive Supply Contract with Orbit Energy Orbit Energy has an exclusive contract with Shell U.K. Limited ("Shell") to provide electricity and natural gas to Orbit Energy until June 2024, with an option (not an obligation) to extend through June 2027. Shell provides access to the forward market such that Orbit Energy can enter into forward hedge position for its customers which protects the Company from mark-to-market fluctuations. Shell also provides extended payment facilities of an additional 30 days compared to the United Kingdom payment terms up to a limit of £5.0 %. £ 0.9

Debt

Debt	6 Months Ended
	Jun. 30, 2021
Debt [Abstract]
Debt	Note 18—Debt Loan with Tokyo Star Bank On November 28, 2019, 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. On May 13, 2020, 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") with maturity date of November 13, 2020. On November 13, 2020, Genie Japan and Tokyo Star Bank amended the May 2020 Loan to extend the maturity date to May 13, 2021. 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 incurred interest at 3.0% per annum and was payable monthly. In May 2021, the Company completed the divestiture of Genie Japan including balance of the May 2020 Loan ( see Revolving Line of Credit with Vantage Commodities On April 4, 2017, GRE, IDT Energy, and other GRE subsidiaries entered into a Credit Agreement with Vantage Commodities Financial Services II, LLC ("Vantage") for a $20.0 million revolving loan facility. The borrowers consist of the Company’s subsidiaries that operate REP businesses, and those subsidiaries’ obligations are guaranteed by GRE. The borrowers have provided as collateral a security interest in their receivables, bank accounts, customer agreements, certain other material agreements and related commercial and intangible rights. The outstanding principal amount incurred interest at LIBOR plus 4.5% per annum. In April 2020, the revolving line of credit expired and the Company paid the outstanding balance of $ million in exchange for the release and termination of any further obligations and security interest. Credit Agreement with JP Morgan Chase Bank On December 5, 2019, the Company entered into the first amendment of Credit Agreement with JPMorgan Chase Bank (“Credit Agreement”) to extend the maturity date of December 31, 2020. On December 8, 2020, the Company entered into the second amendment of its existing Credit Agreement to extend the maturity date to December 31, 2021. 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, 2021 June 30, 2021 Prism Notes Payable On December 11, 2019, the Company refinanced Prism's outstanding 5.95% notes payable to Catskill Hudson Bank that were due in November 2019. The outstanding balance of notes payable of $0.9 million at December 11, 2019 was payable in monthly equal annual installments for period of ten years. The outstanding principal amount incurred fixed interest at 4.75% per annum. On October 16, 2020, Prism settled the notes payable to Catskill Bank with full payment of the remaining principal amount of $0.9 million.

Recently Issued Accounting Stan

Recently Issued Accounting Standards	6 Months Ended
	Jun. 30, 2021
Recently Issued Accounting Standards [Abstract]
Recently Issued Accounting Standards	Note 19—Recently Issued Accounting Standards In June 2016, the FASB issued ASU No. 2016-13, Measurement of Credit Losses on Financial Instruments , that changes the impairment model for most financial assets and certain other instruments. For receivables, loans and other instruments, entities will be required to use a new forward-looking “expected loss” model that generally will result in the earlier recognition of allowance for losses. For available-for-sale debt securities with unrealized losses, entities will measure credit losses in a manner similar to current practice, except the losses will be recognized as allowances instead of reductions in the amortized cost of the securities. In addition, an entity will have to disclose significantly more information about allowances, credit quality indicators and past due securities. The new provisions will be applied as a cumulative-effect adjustment to retained earnings. The Company will adopt the new standard on January 1, 2023. The Company is currently evaluating the requirements of this guidance and has not yet determined the impact of its adoption on the Company's consolidated financial statements.

Cash, Cash Equivalents, and R_2

Cash, Cash Equivalents, and Restricted Cash (Tables)	6 Months Ended
	Jun. 30, 2021
Cash, Cash Equivalents, and Restricted Cash [Abstract]
Schedule of reconciliation of cash, cash equivalents, and restricted cash	June 30, 2021 December 31, 2020 (in thousands) Cash and cash equivalents $ 31,446 $ 36,913 Restricted cash—short-term 6,121 6,271 Total cash, cash equivalents, and restricted cash $ 37,567 $ 43,184

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventories [Abstract]
Schedule of Inventories	June 30, 2021 December 31, 2020 (in thousands) Natural gas $ 813 $ 1,021 Renewable credits 14,642 15,574 Solar Panels: Finished goods 198 335 Totals $ 15,653 $ 16,930

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2021
Revenue Recognition [Abstract]
Schedule of revenues disaggregated	Electricity Natural Gas Other Total (in thousands) Three Months Ended June 30, 2021 Fixed rate $ 48,600 $ 7,538 $ — $ 56,138 Variable rate 34,714 4,238 — 38,952 Other — — 2,616 2,616 Total $ 83,314 $ 11,776 $ 2,616 $ 97,706 Three Months Ended June 30, 2020 Fixed rate $ 30,031 $ 738 $ — $ 30,769 Variable rate 35,875 4,658 — 40,533 Other — — 4,773 4,773 Total $ 65,906 $ 5,396 $ 4,773 $ 76,075 Six Months Ended June 30, 2021 Fixed rate $ 103,557 $ 21,072 $ — $ 124,629 Variable rate 83,428 19,776 — 103,204 Other — — 5,214 5,214 Total $ 186,985 $ 40,848 $ 5,214 $ 233,047 Six Months Ended June 30, 2020 Fixed rate $ 57,550 $ 2,568 $ — $ 60,118 Variable rate 78,327 18,899 — 97,226 Other — — 22,782 22,782 Total $ 135,877 $ 21,467 $ 22,782 $ 180,126 Electricity Natural Gas Other Total (in thousands) Three Months Ended June 30, 2021 Non-Commercial Channel $ 65,855 $ 10,499 $ — $ 76,354 Commercial Channel 17,459 1,277 — 18,736 Other — — 2,616 2,616 Total $ 83,314 $ 11,776 $ 2,616 $ 97,706 Three Months Ended June 30, 2020 Non-Commercial Channel $ 54,783 $ 4,631 $ — $ 59,414 Commercial Channel 11,123 765 — 11,888 Other — — 4,773 4,773 Total $ 65,906 $ 5,396 $ 4,773 $ 76,075 Six Months Ended June 30, 2021 Non-Commercial Channel $ 155,059 $ 37,462 $ — $ 192,521 Commercial Channel 31,926 3,386 — 35,312 Other — — 5,214 5,214 Total $ 186,985 $ 40,848 $ 5,214 $ 233,047 Six Months Ended June 30, 2020 Non-Commercial Channel $ 115,754 $ 19,004 $ — $ 134,758 Commercial Channel 20,123 2,463 — 22,586 Other — — 22,782 22,782 Total $ 135,877 $ 21,467 $ 22,782 $ 180,126
Schedule of contract liability	Six Months Ended June 30, 2021 2020 (in thousands) Contract liability, beginning $ 5,609 $ 13,426 Recognition of revenue included in the beginning of year contract liability (3,262 ) (12,971 ) Additions during the period, net of revenue recognized during the period 2,701 379 Cumulative translation adjustments 169 — Contract liability, end $ 5,217 $ 834

Acquisition (Tables)

Acquisition (Tables)	6 Months Ended
	Jun. 30, 2021
Business Acquisition [Line Items]
Schedule of acquisition's purchase price allocations	(in thousands) Cash $ 2,681 Trade accounts receivable 8,008 Other current assets 843 Intangible assets: Trademark (10-year useful life) 1,594 Non-compete agreements (2-year useful life) 1,956 Customer relationships (2-year useful life) 3,620 Goodwill 13,426 Other assets 657 Accounts and other current liabilities (20,490 ) Noncontrolling interest (5,152 ) Net assets $ 7,143
Schedule of pro forma information	Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Total revenues $ 96,946 $ 89,180 $ 229,117 $ 210,836 Net income 1,304 5,098 1,753 14,487 Net income attributable to Genie Energy Ltd. common stockholders 1,016 6,158 1,769 14,543 Earnings per share attributable to Genie energy Ltd. common stockholders Basic 0.04 0.24 0.07 0.56 Diluted 0.04 0.23 0.07 0.54
Genie Japan [Member]
Business Acquisition [Line Items]
Schedule of acquisition's purchase price allocations	(in t hou Cash $ 83 Trade accounts receivable `1,737 Prepaid and other current assets 391 Intangible (license) 540 Other noncurrent assets 296 Accounts payable (611 ) Accrued expenses and other current liabilities (588 ) Loans payable (1,372 ) Cumulative translation adjustment (181 ) Noncontrolling interest 114 Liabilities held for sale included in other current liabilities $ 409

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2021
Concentration Risk [Line Items]
Schedule of balance of assets and liabilities measured at fair value on a recurring basis	Level 1 (1) Level 2 (2) Level 3 (3) Total (in thousands) June 30, 2021 Assets: Marketable equity securities $ 13,370 $ — $ — $ 13,370 Derivative contracts $ 3,292 $ 703 $ — $ 3,995 Liabilities: Derivative contracts $ 591 $ — $ — $ 591 December 31, 2020 Assets: Marketable equity securities $ 5,089 $ — $ — $ 5,089 Other current assets (Investments in warrants) $ — $ — $ 259 $ 259 Derivative contracts $ 1,237 $ 118 $ — $ 1,355 Liabilities: Derivative contracts $ 286 $ — $ — $ 286 (1) – quoted prices in active markets for identical assets or liabilities (2) – observable inputs other than quoted prices in active markets for identical assets and liabilities (3) – no observable pricing inputs in the market
Consolidated revenues [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Schedule of concentration risk	na-less than 10.0% of consolidated revenue in the period

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments [Abstract]
Schedule of volume of GRE's outstanding contracts and options	Settlement Dates Volume Electricity (in MWH) Gas (in Dth) Third quarter 2021 367,748 89,750 Fourth quarter 2021 374,221 286,750 First quarter 2022 620,484 172,900 Second quarter 2022 78,285 54,950 Third quarter 2022 39,936 43,790 Fourth quarter 2022 74,379 50,600 First quarter 2023 9,216 71,000 Second quarter 2023 9,216 17,900 Third quarter 2023 9,072 17,050 Fourth quarter 2023 9,072 18,600 First quarter 2024 — 20,850 Second quarter 2024 4,700
Schedule of fair value of outstanding derivative instruments recorded as assets and liability	Asset Derivatives Balance Sheet Location June 30, 2021 December 31, 2020 (in thousands) Derivatives not designated or not qualifying as hedging instruments: Energy contracts and options 1 Other current assets $ 3,741 $ 1,338 Energy contracts and options Other assets 254 17 Total derivatives not designated or not qualifying as hedging instruments — $ 3,995 $ 1,355 Liability Derivatives Balance Sheet Location June 30, December 31, Derivatives not designated or not qualifying as hedging instruments: Energy contracts and options 1 Other current liabilities $ 403 245 Energy contracts and options Other liabilities 188 41 Total derivatives not designated or not qualifying as hedging instruments — Liabilities $ 591 $ 286 ( 1 The Company classifies derivative assets and liabilities as current based on the cash flows expected to be incurred within the following 12 .
Schedule of derivative instruments on the consolidated statements of operations	Amount of Gain (Loss) Recognized on Derivatives Derivatives not designated or not qualifying as Location of Gain (Loss) Recognized Three Months Ended June 30, Six Months Ended June 30, hedging instruments on Derivatives 2021 2020 2021 2020 (in thousands) (in thousands) Energy contracts and options Cost of revenues $ 1,908 $ (6,200 ) $ 4,795 $ (18,589 )

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill and Other Intangible Assets [Abstract]
Schedule of goodwill	GRE GRE International Genie Renewables Total (in thousands) Balance at January 1, 2021 $ 9,998 $ 15,931 $ — $ 25,929 Cumulative translation adjustment — 112 — 112 Balance at June 30, 2021 $ 9,998 $ 16,043 $ — $ 26,041
Schedule of other intangible assets	Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Balance (in thousands) June 30, 2021 Patents and trademarks 14.9 years $ 5,526 $ 1,101 $ 4,425 Non-compete agreements 2.0 years 2,120 811 1,309 Customer relationships 3.6 years 4,958 1,915 3,043 Licenses 10.0 years 479 79 400 Total $ 13,083 $ 3,906 $ 9,177 December 31, 2020 Trademark 14.9 years $ 5,534 $ 878 $ 4,656 Non-compete agreement 2.0 years 2,096 75 2,021 Customer relationships 3.1 years 6,907 2,922 3,985 Licenses 10.0 years 1,224 241 983 Total $ 15,761 $ 4,116 $ 11,645

Accrued Expenses (Tables)

Accrued Expenses (Tables)	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Schedule of accrued expenses	June 30, 2021 December 31, 2020 (in thousands) Renewable energy $ 35,794 $ 26,474 Liability to customers related to promotions and retention incentives 9,078 9,558 Payroll and employee benefit 2,156 3,534 Other accrued expenses 2,076 3,196 Total accrued expenses $ 49,104 $ 42,762

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2021
Leases [Abstract]
Schedule of operating lease expense	June 30, 2021 December 31, 2020 (in thousands) ROU Assets $ 3,656 $ 4,409 Current portion of operating lease liabilities 1,060 1,327 Noncurrent portion of operating lease liabilities 2,772 3,233 Total $ 3,832 $ 4,560
Schedule of supplemental cash flow information	Six Months Ended June 30, 2021 2020 Cash paid for amounts included in the measurement of lease liabilities: (in thousands) Operating cash flows from operating activities $ 985 $ 431 ROU assets obtained in the exchange for lease liabilities Operating leases $ — $ —
Schedule of future operating lease	(in thousands) Remainder of 2021 $ 616 2022 1,193 2023 1,162 2024 225 2025 233 Thereafter 1,072 Total future lease payments 4,501 Less imputed interest (669 ) Total operating lease liabilities $ 3,832

Equity (Tables)

Equity (Tables)	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Schedule of dividend paid	Declaration Date Dividend Per Share Aggregate Dividend Amount Record Date Payment Date Series 2012-A Preferred Stock (“Preferred Stock”) January 13, 2021 $ 0.1594 $ 370 February 8, 2021 February 16, 2021 April 14, 2021 0.1594 370 April 27, 2021 May 17, 2021

Variable Interest Entity (Table

Variable Interest Entity (Tables)	6 Months Ended
	Jun. 30, 2021
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liability, Net [Abstract]
Schedule of net loss related to CCE and aggregate net funding	Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in thousands) (in thousands) Net loss $ 52 $ 411 $ 373 $ 748 Aggregate funding provided by the Company, net $ 125 $ 282 $ 528 $ 522
Schedule of combined balance sheet amounts related to CCE	June 30, 2021 December 31, 2020 (in thousands) Assets Cash, cash equivalents and restricted cash $ 687 $ 491 Trade accounts receivable 380 433 Prepaid expenses and other current assets 381 416 Other assets 359 359 Total assets $ 1,807 $ 1,699 Liabilities and noncontrolling interests Current liabilities $ 471 $ 518 Due to IDT Energy 4,650 4,122 Noncontrolling interests (3,314) (2,941 ) Total liabilities and noncontrolling interests $ 1,807 $ 1,699

Income Taxes (Tables)

Income Taxes (Tables)	6 Months Ended
	Jun. 30, 2021
Income Taxes [Abstract]
Schedule of company's effective tax rate	Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 Reported tax rate 37.4 % 40.0 % 58.8 % 30.2 %

Earnings (Loss) Per Share (Tabl

Earnings (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share	Three Months Ended June 30, Six Months Ended June 30, 2021 2020 2021 2020 (in (in Basic weighted-average number of shares 25,804 26,087 25,903 26,098 Effect of dilutive securities: Stock options and warrants 353 629 468 583 Non-vested restricted Class B common stock 70 137 75 123 Diluted weighted-average number of shares 26,227 26,853 26,446 26,804
Schedule of shares were excluded from the diluted earnings per share	Three Months Ended June 30, 2021 2020 2021 2020 (in (in Shares underlying options and warrants 295 126 295 126 Non-vested deferred stock units 610 610 610 610

Related Party Transactions (Tab

Related Party Transactions (Tables)	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Schedule of related party transactions	Three Months Ended Six Months Ended June 30, 2021 2020 2021 2020 (in thousands) (in thousands) Amount IDT charged the Company $ 268 $ 249 $ 518 $ 520 Amount the Company charged IDT $ 33 $ 41 $ 72 $ 79 Amount Rafael charged the Company $ 57 $ 56 $ 113 $ 111
Schedule of receivables and payables	June 30, 2021 December 31, 2020 (in thousands) Due to IDT $ 338 $ 299 Due from IDT $ 34 $ 40 Due to Rafael $ — $ —

Business Segment Information (T

Business Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Business Segment Information [Abstract]
Schedule of operating results for the business segments	(in thousands) GRE GRE International Genie Renewables Corporate Total Three Months Ended June 30, 2021 Revenues $ 66,977 $ 28,385 $ 2,344 $ — $ 97,706 Income (loss) from operations 5,509 (3,035) 334 (1,452) 1,356 Depreciation and amortization 88 1,016 11 — 1,115 Equity in the net income of equity method — — — 53 53 Three Months Ended June 30, 2020 Revenues $ 66,472 $ 5,037 $ 4,566 $ — $ 76,075 Income (loss) from operations 5,957 (607 ) (1,113 ) (1,507 ) 2,730 Impairment of assets — — 801 — 801 Depreciation and amortization 117 495 95 15 722 Equity in net loss of equity method — (1,502 ) — 329 (1,173 ) Six Months Ended June 30, 2021 Revenues $ 157,644 $ 70,571 $ 4,832 $ — $ 233,047 Income (loss) from operations 6,712 (9,695) 894 (3,130) (5,219) Depreciation and amortization 205 2,217 23 1 2,446 Equity in the net income of equity method investees — — — 164 164 Six Months Ended June 30, 2020 Revenues $ 145,617 $ 11,990 $ 22,519 $ — $ 180,126 Income (loss) from operations 18,974 (3,127 ) (771) (3,133 ) 11,943 Depreciation and amortization 230 986 303 29 1,548 Equity in net loss of equity method investees — (1,502 ) — (50) (1,552 )
Schedule of total assets for the business segments	(in thousands) GRE GRE International Genie Renewables Corporate Total Total assets: June 30, 2021 $ 101,026 $ 48,558 $ 2,699 $ 32,843 $ 185,126 December 31, 2020 101,904 55,273 3,171 26,991 187,339

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies [Abstract]
Schedule of purchase commitments outstanding	(in thousands) Remainder of 2021 $ 72,759 2022 45,246 2023 22,690 2024 3,890 2025 418 Thereafter — Total payments $ 145,003

Basis of Presentation (Details)

Basis of Presentation (Details) - USD ($)	1 Months Ended		3 Months Ended				6 Months Ended
	Feb. 28, 2021	Jan. 31, 2021	Jun. 30, 2021	Sep. 30, 2020	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2021	Jun. 30, 2019
Basis of Presentation (Textual)
Reduction cost of revenues			$ 1,500,000				$ 1,500,000
Maximum [Member]
Basis of Presentation (Textual)
Recovery cost							2,600,000
Minimum [Member]
Basis of Presentation (Textual)
Recovery cost							$ 1,500,000
Genie Japan [Member]
Basis of Presentation (Textual)
Additional Costs Included in Cost of Revenue		$ 2,500
Genie Retail Energy [Member]
Basis of Presentation (Textual)
Company's investment, ownership percentage in subsidiary							100.00%
Percentage of gas revenue generated in given period					47.70%	46.90%
Percentage of electricity revenue generated in given period				31.80%
Additional Costs Included in Cost of Revenue	$ 13,000
Genie Energy Services [Member]
Basis of Presentation (Textual)
Company's investment, ownership percentage in subsidiary							95.50%
Prism Solar Technology [Member]
Basis of Presentation (Textual)
Business acquired interest			60.00%				60.00%
Lumo Energia Oyj [Member]
Basis of Presentation (Textual)
Company's investment, ownership percentage in subsidiary							98.80%
Business acquired interest								91.70%
GRE International Corporation [Member]
Basis of Presentation (Textual)
Company's investment, ownership percentage in subsidiary							99.30%
Genie Retail Energy International [Member]
Basis of Presentation (Textual)
Company's investment, ownership percentage in subsidiary							95.50%
Shoreditch Energy Limited [Member]
Basis of Presentation (Textual)
Business acquired interest			100.00%				100.00%

Cash, Cash Equivalents, and R_3

Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Cash, Cash Equivalents, and Restricted Cash [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 31,446	$ 36,913
Restricted cash—short-term	6,121	6,271
Total cash, cash equivalents, and restricted cash	$ 37,567	$ 43,184	$ 41,759	$ 38,554

Inventories (Details)

Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Inventories [Abstract]
Natural gas	$ 813	$ 1,021
Renewable credits	14,642	15,574
Solar Panels:
Finished goods	198	335
Totals	$ 15,653	$ 16,930

Revenue Recognition (Details)

Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 97,706	$ 76,075	$ 233,047	$ 180,126
Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	83,314	65,906	186,985	135,877
Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	11,776	5,396	40,848	21,467
Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,616	4,773	5,214	22,782
Fixed rate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	56,138	30,769	124,629	60,118
Fixed rate [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	48,600	30,031	103,557	57,550
Fixed rate [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	7,538	738	21,072	2,568
Fixed rate [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Variable rate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	38,952	40,533	103,204	97,226
Variable rate [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	34,714	35,875	83,428	78,327
Variable rate [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	4,238	4,658	19,776	18,899
Variable rate [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,616	4,773	5,214	22,782
Other [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,616	$ 4,773	$ 5,214	$ 22,782

Revenue Recognition (Details 1)

Revenue Recognition (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 97,706	$ 76,075	$ 233,047	$ 180,126
Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	83,314	65,906	186,985	135,877
Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	11,776	5,396	40,848	21,467
Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,616	4,773	5,214	22,782
Non Commercial and commercial [Member]
Disaggregation of Revenue [Line Items]
Total revenues				22,782
Non-Commercial Channel [Member]
Disaggregation of Revenue [Line Items]
Total revenues	76,354	59,414	192,521	134,758
Non-Commercial Channel [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	65,855	54,783	155,059	115,754
Non-Commercial Channel [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	10,499	4,631	37,462	19,004
Non-Commercial Channel [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Commercial Channel [Member]
Disaggregation of Revenue [Line Items]
Total revenues	18,736	11,888	35,312	22,586
Commercial Channel [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues	17,459	11,123	31,926	20,123
Commercial Channel [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues	1,277	765	3,386	2,463
Commercial Channel [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,616	4,773	5,214	22,782
Other [Member] | Electricity [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member] | Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Total revenues
Other [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,616	$ 4,773	$ 5,214	$ 22,782

Revenue Recognition (Details 2)

Revenue Recognition (Details 2) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2020	Jun. 30, 2021
Revenue Recognition [Abstract]
Contract liability, beginning	$ 13,426	$ 5,609
Recognition of revenue included in the beginning of year contract liability	(12,971)	(3,262)
Additions during the period, net of revenue recognized during the period	379	2,701
Cumulative translation adjustments		169
Contract liability, end	$ 834	$ 5,217

Revenue Recognition (Details Te

Revenue Recognition (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue Recognition
Total capitalized customer acquisition costs	$ 0.3	$ 0.2	$ 0.6	$ 0.4
Amortization of capitalized customer acquisition cost	$ 0.2	$ 0.2	$ 0.4
Minimum [Member]
Revenue Recognition
Capitalized customer acquisition costs, amortization period	18 months		18 months
Maximum [Member]
Revenue Recognition
Capitalized customer acquisition costs, amortization period	24 months		24 months
Other Current Assets [Member]
Revenue Recognition
Other asset current	$ 0.4		$ 0.4
Other Assets [Member]
Revenue Recognition
Other assets	$ 0.2		$ 0.2

Acquisition (Details)

Acquisition (Details) $ in Thousands	Jun. 30, 2021USD ($)
Lumo Energia Oyj [Member]
Business Acquisition [Line Items]
Cash	$ 2,681
Trade accounts receivable	8,008
Other current assets	843
Intangible assets:
Trademark (5-year useful life)	1,594
Non-compete agreements (3-year useful life)	1,956
Customer relationship (2-year useful life)	3,620
Goodwill	13,426
Other assets	657
Accounts and other current liabilities	(20,490)
Noncontrolling interest	5,152
Net assets	7,143
Genie Japan [Member]
Business Acquisition [Line Items]
Cash	83
Trade accounts receivable	1,737
Prepaid and other current assets	391
Intangible assets:
Intangible (license)	540
Other assets	296
Accounts and other current liabilities	(611)
Accrued expenses and other current liabilities	588
Loans payable	1,372
Cumulative translation adjustment	181
Noncontrolling interest	(114)
Net assets	$ 409

Acquisition (Details Textual)

Acquisition (Details Textual) $ in Thousands, € in Millions, ¥ in Millions

May 11, 2021CNY (¥)

May 11, 2021USD ($)

Oct. 08, 2020EUR (€)

Oct. 08, 2020USD ($)

Jan. 02, 2019

Apr. 26, 2021CNY (¥)

Apr. 26, 2021USD ($)

Jun. 30, 2021USD ($)

Jun. 30, 2020USD ($)

Jun. 30, 2021USD ($)

Jun. 30, 2020USD ($)

Dec. 31, 2020USD ($)

Oct. 08, 2020USD ($)

Business Acquisition [Line Items]

Loss before taxes

$ 8,443

$ 1,467

$ 6,284

$ 10,457

Gain (Loss) on Disposition of Stock in Subsidiary

4,226

4,226

Genie Japan [Member]

Business Acquisition [Line Items]

Gain (Loss) on Sale of Interest in Projects

¥ 570

$ 5,300

Aggregate consideration

¥ 570

$ 5,200

Brokerage Commissions Revenue

600

Accrued Income Taxes

$ 4,200

4,200

Shoreditch Energy Limited [Member]

Business Acquisition [Line Items]

Contribution for previous acquisition of business

$ 1,500

Shoreditch Energy Limited [Member] | Genie Energy UK Limited

Business Acquisition [Line Items]

Total consideration, net of cash acquired

$ 9,500

Acquired equity interest

77.00%

77.00%

Percentage of remaining equity interest acquired

23.00%

23.00%

23.00%

Business acquisition, purchase price

€ 1.3

1,700

Business acquisition, loans receivable acquired

€ 0.2

$ 200

Estimated fair value of the investment

5,500

Net book value of the investment

Gain recognized upon consolidation

$ 5,500

Shoreditch Energy Limited [Member] | Genie Japan [Member]

Business Acquisition [Line Items]

Gain (Loss) on Disposition of Stock in Subsidiary

$ 5,500

$ 4,200

Lumo Energia Oyj [Member] | Trademark [Member]

Business Acquisition [Line Items]

Finite-lived intangible asset, useful life

10 years

Lumo Energia Oyj [Member] | Non-compete agreements

Business Acquisition [Line Items]

Finite-lived intangible asset, useful life

2 years

Lumo Energia Oyj [Member] | Customer relationships [Member]

Business Acquisition [Line Items]

Finite-lived intangible asset, useful life

2 years

Acquisitions (Details 2)

Acquisitions (Details 2) - Shoreditch Energy Limited [Member] - Genie Energy UK Limited - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Acquisition [Line Items]
Total revenues	$ 96,946	$ 89,180	$ 229,117	$ 210,836
Net income	1,304	5,098	1,753	14,487
Net income attributable to Genie Energy Ltd. common stockholders	$ 1,016	$ 6,158	$ 1,769	$ 14,543
Earnings per share attributable to Genie energy Ltd. common stockholders
Basic	$ 0.04	$ 0.24	$ 0.07	$ 0.56
Diluted	$ 0.04	$ 0.23	$ 0.07	$ 0.54

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Assets:
Marketable equity securities		$ 13,370	$ 5,089
Recurring [Member]
Assets:
Marketable equity securities		13,370	5,089
Other current assets (Investments in warrants)			259
Derivative contracts		3,995	1,355
Liabilities:
Derivative contracts		591	286
Level 1 [Member] | Recurring [Member]
Assets:
Marketable equity securities	[1]	13,370	5,089
Other current assets (Investments in warrants)	[1]
Derivative contracts	[1]	3,292	1,237
Liabilities:
Derivative contracts	[1]	591	286
Level 2 [Member] | Recurring [Member]
Assets:
Marketable equity securities	[2]
Other current assets (Investments in warrants)	[2]
Derivative contracts	[2]	703	118
Liabilities:
Derivative contracts	[2]
Level 3 [Member] | Recurring [Member]
Assets:
Marketable equity securities	[3]
Other current assets (Investments in warrants)	[3]		259
Derivative contracts	[3]
Liabilities:
Derivative contracts	[3]
[1]	quoted prices in active markets for identical assets or liabilities
[2]	observable inputs other than quoted prices in active markets for identical assets and liabilities
[3]	no observable pricing inputs in the market

Fair Value Measurements (Deta_2

Fair Value Measurements (Details 1) $ in Millions	3 Months Ended
	Dec. 31, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of goodwill	$ 0.4

Fair Value Measurements (Deta_3

Fair Value Measurements (Details 2) - Sales Revenue, Net [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Customer A [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	11.00%	13.00%
Customer B [Member]
Concentration Risk [Line Items]
Concentration risk, percentage				10.00%

Fair Value Measurements (Deta_4

Fair Value Measurements (Details Textual) - Revenue from Rights Concentration Risk [Member]	Jun. 30, 2021	Dec. 30, 2020
Accounts Receivable [Member]
Fair Value Measurements (Textual)
Concentration risk percentage	10.00%	10.00%
Revenues [Member]
Fair Value Measurements (Textual)
Concentration risk percentage	10.00%
Customer A [Member] | Revenues [Member]
Fair Value Measurements (Textual)
Concentration risk percentage	10.00%

Derivative Instruments (Details

Derivative Instruments (Details)	6 Months Ended
	Jun. 30, 2021
Electricity (in MWH) [Member] | Third quarter 2021
Derivative [Line Items]
Volume	367,748
Electricity (in MWH) [Member] | Fourth quarter 2021
Derivative [Line Items]
Volume	374,221
Electricity (in MWH) [Member] | First quarter 2022
Derivative [Line Items]
Volume	620,484
Electricity (in MWH) [Member] | Second quarter 2022
Derivative [Line Items]
Volume	78,285
Electricity (in MWH) [Member] | Third quarter 2022
Derivative [Line Items]
Volume	39,936
Electricity (in MWH) [Member] | Fourth quarter 2022
Derivative [Line Items]
Volume	74,379
Electricity (in MWH) [Member] | First quarter 2023
Derivative [Line Items]
Volume	9,216
Electricity (in MWH) [Member] | Second quarter 2023
Derivative [Line Items]
Volume	9,216
Electricity (in MWH) [Member] | Third quarter 2023
Derivative [Line Items]
Volume	9,072
Electricity (in MWH) [Member] | Fourth quarter 2023
Derivative [Line Items]
Volume	9,072
Electricity (in MWH) [Member] | First quarter 2024
Derivative [Line Items]
Volume
Natural gas (in Dth) [Member] | Third quarter 2021
Derivative [Line Items]
Volume	89,750
Natural gas (in Dth) [Member] | Fourth quarter 2021
Derivative [Line Items]
Volume	286,750
Natural gas (in Dth) [Member] | First quarter 2022
Derivative [Line Items]
Volume	172,900
Natural gas (in Dth) [Member] | Second quarter 2022
Derivative [Line Items]
Volume	54,950
Natural gas (in Dth) [Member] | Third quarter 2022
Derivative [Line Items]
Volume	43,790
Natural gas (in Dth) [Member] | Fourth quarter 2022
Derivative [Line Items]
Volume	50,600
Natural gas (in Dth) [Member] | First quarter 2023
Derivative [Line Items]
Volume	71,000
Natural gas (in Dth) [Member] | Second quarter 2023
Derivative [Line Items]
Volume	17,900
Natural gas (in Dth) [Member] | Third quarter 2023
Derivative [Line Items]
Volume	17,050
Natural gas (in Dth) [Member] | Fourth quarter 2023
Derivative [Line Items]
Volume	18,600
Natural gas (in Dth) [Member] | First quarter 2024
Derivative [Line Items]
Volume	20,850
Natural gas (in Dth) [Member] | Second quarter 2024
Derivative [Line Items]
Volume	4,700

Derivative Instruments (Detai_2

Derivative Instruments (Details 1) - Energy contracts and options [Member] - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020
Schedule of fair value of outstanding derivative instruments recorded as assets and liability
Asset Derivatives not designated or not qualifying as hedging instruments		$ 3,995	$ 1,355
Liability Derivatives not designated or not qualifying as hedging instruments		591	286
Other current assets [Member]
Schedule of fair value of outstanding derivative instruments recorded as assets and liability
Asset Derivatives not designated or not qualifying as hedging instruments	[1]	3,741	1,338
Other assets [Member]
Schedule of fair value of outstanding derivative instruments recorded as assets and liability
Asset Derivatives not designated or not qualifying as hedging instruments		254	17
Other current liabilities [Member]
Schedule of fair value of outstanding derivative instruments recorded as assets and liability
Liability Derivatives not designated or not qualifying as hedging instruments	[1]	403	245
Other liabilities [Member]
Schedule of fair value of outstanding derivative instruments recorded as assets and liability
Liability Derivatives not designated or not qualifying as hedging instruments		$ 188	$ 41
[1]	The Company classifies derivative assets and liabilities as current based on the cash flows expected to be incurred within the following 12 .

Derivative Instruments (Detai_3

Derivative Instruments (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	18 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2021
Energy contracts and options [Member] | Cost of revenues [Member]
Effects of derivative instruments on the consolidated statements of operations
Amount of Gain (Loss) Recognized on Derivatives	$ 1,908	$ 6,200	$ 4,795	$ (18,589)

Assets and Liabilities Held for

Assets and Liabilities Held for Sale (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Assets and Liabilities Held for Sale (Textual)
Loss before taxes	$ 8,443	$ 1,467	$ 6,284	$ 10,457

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)
Beginning balance	$ 25,929
Cumulative translation adjustment	112
Ending balance	26,041
GRE [Member]
Beginning balance	9,998
Cumulative translation adjustment
Ending balance	9,998
GRE International Corporation [Member]
Beginning balance	15,931
Cumulative translation adjustment	112
Ending balance	16,043
Genie Renewables [Member]
Beginning balance
Cumulative translation adjustment
Ending balance

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Details 1) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 13,083	$ 15,761
Accumulated Amortization	3,906	4,116
Net Balance	$ 9,177	$ 11,645
Patents and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	14 years 10 months 24 days	14 years 10 months 24 days
Gross Carrying Amount	$ 5,526	$ 5,534
Accumulated Amortization	1,101	878
Net Balance	$ 4,425	$ 4,656
Non-compete agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	2 years	2 years
Gross Carrying Amount	$ 2,120	$ 2,096
Accumulated Amortization	811	75
Net Balance	$ 1,309	$ 2,021
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	3 years 7 months 6 days	3 years 1 month 6 days
Gross Carrying Amount	$ 4,958	$ 6,907
Accumulated Amortization	1,915	2,922
Net Balance	$ 3,043	$ 3,985
Licenses [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Amortization Period	10 years	10 years
Gross Carrying Amount	$ 479	$ 1,224
Accumulated Amortization	79	241
Net Balance	$ 400	$ 983

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill And Other Intangible Assets (Textual)
Goodwill, Impairment Loss		$ 0.4
Impairment of customer relationship					$ 0.8
Amortization expense of intangible assets	$ 1.1		$ 0.4	$ 2.4	$ 0.9
Amortization expense of finite lives intangible assets, 2022	2.8			2.8
Amortization expense of finite lives intangible assets, 2023	0.6			0.6
Amortization expense of finite lives intangible assets, 2024	0.6			0.6
Amortization expense of finite lives intangible assets, 2025	0.6			0.6
Amortization expense of finite lives intangible assets, 2026 and thereafter	2.8			2.8
Amortization expense of finite lives intangible assets, remainder of 2021	$ 1.8			$ 1.8

Accrued Expenses (Details)

Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Renewable energy	$ 35,794	$ 26,474
Liability to customers related to promotions and retention incentives	9,078	9,558
Payroll and employee benefit	2,156	3,534
Other accrued expenses	2,076	3,196
Total accrued expenses	$ 49,104	$ 42,762

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
ROU Assets	$ 3,656	$ 4,409
Current portion of operating lease liabilities	1,060	1,327
Noncurrent portion of operating lease liabilities	2,772	3,233
Total	$ 3,832	$ 4,560

Leases (Details 1)

Leases (Details 1) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating activities	$ 985	$ 431
ROU assets obtained in the exchange for lease liabilities
Operating leases

Leases (Details 2)

Leases (Details 2) $ in Thousands	Jun. 30, 2021USD ($)
Leases [Abstract]
Remainder of 2021	$ 616
2022	1,193
2023	1,162
2024	225
2025	233
Thereafter	1,072
Total future lease payments	4,501
Less imputed interest	669
Total operating lease liabilities	$ 3,832

Leases (Details Textual)

Leases (Details Textual) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Weighted average remaining lease term	4 years 10 months 24 days		4 years 10 months 24 days
Weighted average discount rate	6.00%		6.00%
Operating lease rent	$ 0.6	$ 0.2	$ 1	$ 0.4

Equity (Details)

Equity (Details) - Series 2012-A Preferred Stock (Preferred Stock) [Member] $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2021USD ($)$ / shares
January 13, 2021 [Member]
Class of Stock [Line Items]
Declaration Date	Jan. 13, 2021
Dividend Per Share | $ / shares	$ 0.1594
Aggregate Dividend Amount | $	$ 370
Record Date	Feb. 8, 2021
Payment Date	Feb. 16, 2021
April 14, 2021 [Member]
Class of Stock [Line Items]
Declaration Date	Apr. 14, 2021
Dividend Per Share | $ / shares	$ 0.1594
Aggregate Dividend Amount | $	$ 370
Record Date	Apr. 27, 2021
Payment Date	May 17, 2021

Equity (Details Textual)

Equity (Details Textual) - USD ($)

Jul. 07, 2021

Mar. 14, 2021

Jun. 12, 2018

Jun. 08, 2018

Feb. 29, 2020

Jun. 08, 2018

Jun. 30, 2021

Mar. 31, 2021

Jun. 30, 2020

Mar. 31, 2020

Mar. 31, 2019

Mar. 31, 2019

Jun. 30, 2021

Dec. 31, 2020

Mar. 08, 2021

Feb. 28, 2021

Mar. 11, 2013

Equity (Textual)

Dividends on preferred stock

$ 370,000

$ 370,000

$ 370,000

$ 370,000

Dividends declared per common share

$ 0.075

Unrecognized compensation cost

4,800

$ 4,800

Weighted-average period

2 years 4 months 24 days

Treasury stock outstanding

1,700,000

1,300,000

Treasury stock cost

$ 12,300,000

$ 9,800,000

Weighted average cost per share

$ 7.17

$ 7.46

Stock Repurchase Program [Member]

Equity (Textual)

Common stock issued for stock repurchase program

200,873,000

$ 213,206,000

Aggregate amount of shares under stock purchase program

$ 1,500

$ 1,500

Remaining number of shares available for repurchase

5.5

5.5

2011 Plan [Member]

Equity (Textual)

Expiration date of the option

Oct. 24, 2021

Stock-Based Compensation [Member] | Board of Directors [Member]

Equity (Textual)

Deferred stock units granted

305,000

305,000

Recognized compensation cost

$ 0

Subsequent Event [Member]

Equity (Textual)

Common stock issued for stock repurchase program

$ 125,000,000

Aggregate amount of shares under stock purchase program

$ 800

Preferred Stock [Member]

Equity (Textual)

Preferred stock, dividends per share

$ 0.1594

Dividends on preferred stock

Paid date of declared dividend

Aug. 16, 2021

Record date of declared dividend

Aug. 9, 2021

Stock option and incentive plan to reserve

Stockholders grant of options purchase

Class A common stock [Member]

Equity (Textual)

Dividends on preferred stock

Stock option and incentive plan to reserve

Stockholders grant of options purchase

Class B common stock [Member]

Equity (Textual)

Number of stock authorized to be repurchased

7,000,000

Dividends on preferred stock

Expiration date of the option

Jun. 30, 2023

Warrants to purchase shares

1,257,862

1,257,862

Warrants exercise price per share

$ 4.77

$ 4.77

Stock option and incentive plan to reserve

20

Stockholders grant of options purchase

121

20

Class B common stock [Member] | Stock Repurchase Program [Member]

Equity (Textual)

Common stock issued for stock repurchase program

$ 392,932,000

$ 392,932,000

Aggregate amount of shares under stock purchase program

$ 2,400

$ 2,400

Class B common stock [Member] | Stock-Based Compensation [Member] | 2021 Plan | Share-based Payment Arrangement, Employee

Equity (Textual)

Maximum number of shares reserved for the grant of awards

1

Class B common stock [Member] | Howard S. Jonas [Member]

Equity (Textual)

Expiration date of the option

Jun. 30, 2023

Warrants to purchase shares

1,048,218

1,048,218

Warrants exercise price per share

$ 4.77

$ 4.77

Amount of warrants aggregate exercise price

$ 5,000,000

Class B common stock [Member] | Investor [Member]

Equity (Textual)

Amount of aggregate sales price

$ 1,000,000

Warrants to purchase shares

209,644

Warrants exercise price per share

$ 4.77

Amount of warrants aggregate exercise price

$ 1,000,000

Variable Interest Entity (Detai

Variable Interest Entity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Variable Interest Entity, Consolidated, Carrying Amount, Assets and Liability, Net [Abstract]
Net loss	$ 52	$ 411	$ 373	$ 748
Aggregate funding provided by the Company, net	$ 125	$ 282	$ 528	$ 522

Variable Interest Entity (Det_2

Variable Interest Entity (Details 1) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	$ 185,126	$ 187,339
CCE [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	1,807	1,699
Total liabilities and noncontrolling interests	1,807	1,699
CCE [Member] | Cash, cash equivalents and restricted cash [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	687	491
CCE [Member] | Trade accounts receivable [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	380	433
CCE [Member] | Prepaid expenses and other current assets [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	381	416
CCE [Member] | Other assets [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total assets	359	359
CCE [Member] | Current liabilities [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total liabilities and noncontrolling interests	471	518
CCE [Member] | Due to IDT Energy [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total liabilities and noncontrolling interests	4,650	4,122
CCE [Member] | Noncontrolling interests [Member]
Variable Interest Entity Classifications Of Carrying Amount Assets And Liabilities Net [Abstract]
Total liabilities and noncontrolling interests	$ (3,314)	$ (2,941)

Variable Interest Entity (Det_3

Variable Interest Entity (Details Textual) - CCE [Member] $ in Millions	1 Months Ended
	Oct. 31, 2015USD ($)
Variable Interest Entity (Textual)
Percentage of option to purchase	100.00%
Forgiveness of loan	$ 0.5
Expiration date of the option	Oct. 22, 2023

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Taxes [Abstract]
Reported tax rate	37.40%	40.00%	(58.80%)	30.20%

Income Taxes (Details Textual)

Income Taxes (Details Textual)	6 Months Ended
	Jun. 30, 2021
Income Taxes (Textual)
Income tax , description	Reported tax rate for the three months ended June 30, 2021 was 37.4%, a slight decrease as compared to the same period in 2020

Earnings (Loss) Per Share (Deta

Earnings (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Basic weighted-average number of shares	25,804	26,087	25,903	26,098
Effect of dilutive securities:
Stock options and warrants	353	629	468	583
Non-vested restricted Class B common stock	70	137	75	123
Diluted weighted-average number of shares	26,227	26,853	26,446	26,804

Earnings (Loss) Per Share (De_2

Earnings (Loss) Per Share (Details 1) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options	295,000	126,000	295	126
Non-vested Deferred Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options	610,000	610,000	610	610

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021
IDT [Member]
Summary of related party transactions
Amount charged the Company	$ 268	$ 249	$ 520	$ 518
Amount the Company charged IDT	33	41	79	72
Rafael [Member]
Summary of related party transactions
Amount charged the Company	$ 57	$ 56	$ 111	$ 113

Related Party Transactions (D_2

Related Party Transactions (Details 1) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
IDT [Member]
Related Party Transaction [Line Items]
Due to related parties	$ 338	$ 299
Due from related parties	34	40
Rafael [Member]
Related Party Transaction [Line Items]
Due to related parties

Related Party Transactions (D_3

Related Party Transactions (Details Textual) $ / shares in Units, ₪ in Millions	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2020USD ($)$ / sharesshares	Aug. 31, 2018USD ($)	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)$ / sharesshares	May 31, 2021USD ($)	Mar. 01, 2020	Aug. 31, 2019ILS (₪)	Aug. 31, 2019USD ($)	Aug. 12, 2019ILS (₪)	Sep. 30, 2018
Related Party Transactions (Textual)
Unrealized gain on investment			$ 2,915,000		$ 7,022,000
Outstanding balance		$ 100,000
New note payment terms, description		December 31, 2020 and December 2052.
Accrued interest					100,000
Equity in the net loss			$ 53,000	(1,173,000)	$ 164,000	(1,552,000)
Class B common stock [Member]
Related Party Transactions (Textual)
Warrants to purchase shares | shares			1,257,862		1,257,862
Warrants exercise price per share | $ / shares			$ 4.77		$ 4.77
Rafael [Member]
Related Party Transactions (Textual)
Unrealized gain on investment			$ 2,900		$ 6,500
Outstanding payable
Rafael [Member] | Class B common stock [Member]
Related Party Transactions (Textual)
Fair value of common stock	$ 5,000,000
Number of common stock shares issued | shares	218,245
Warrants to purchase shares | shares	43,649						43,649
Warrants exercise price per share | $ / shares	$ 22.91						$ 22.91
Warrants expiry date	Jun. 6, 2022
Amount of warrants aggregate exercise price					1,000,000
Carrying value of investments in the common stock			13,400,000		13,400,000
IGM Brokerage Corp. [Member]
Related Party Transactions (Textual)
Payment of insurance premium							$ 300,000
Outstanding payable			0		0
Atid 613 [Member]
Related Party Transactions (Textual)
Outstanding balance								$ 200,000
Percentage of ownership													37.50%
Equity in the net loss						0
Carrying value of investment in equity method investees			100,000	$ 100,000	100,000	$ 100,000
Maximum principal amount on working capital financing			400,000		400,000
Outstanding balance of Credit Facility
Agreed to loan amount			1,500,000		1,500,000							₪ 5.1
Commitment to loan amount			$ 500,000		$ 500,000							₪ 1.9
Additional loan amount										₪ 0.8	$ 200,000
Annual interest rate			5.50%		5.50%				0.00%
Recognized equity net loss			$ 200,000

Business Segment Information (D

Business Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Operating results for the business segments
Revenues	$ 97,706	$ 76,075	$ 233,047	$ 180,126
Income (loss) from operations	1,356	2,730	(5,219)	11,943
Depreciation and amortization	1,115	722	2,446	1,548
Impairment of assets		801
Equity in the net income (loss) in equity method investees, net	53	(1,173)	164	(1,552)
GRE [Member]
Operating results for the business segments
Revenues	66,977	66,472	157,644	145,617
Income (loss) from operations	5,509	5,957	6,712	18,974
Depreciation and amortization	88	117	205	230
Impairment of assets
Equity in the net income (loss) in equity method investees, net
GRE International [Member]
Operating results for the business segments
Revenues	28,385	5,037	70,571	11,990
Income (loss) from operations	(3,035)	(607)	(9,695)	(3,127)
Depreciation and amortization	1,016	495	2,217	986
Impairment of assets
Equity in the net income (loss) in equity method investees, net		(1,502)		(1,502)
Genie Renewables [Member]
Operating results for the business segments
Revenues	2,344	4,566	4,832	22,519
Income (loss) from operations	334	(1,113)	894	(771)
Depreciation and amortization	11	95	23	303
Impairment of assets		801
Equity in the net income (loss) in equity method investees, net
Corporate [Member]
Operating results for the business segments
Revenues
Income (loss) from operations	1,452	(1,507)	(3,130)	(3,133)
Depreciation and amortization		15	1	29
Impairment of assets
Equity in the net income (loss) in equity method investees, net	$ 53	$ 329	$ 164	$ (50)

Business Segment Information _2

Business Segment Information (Details 1) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 185,126	$ 187,339
GRE [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	101,026	101,904
GRE International [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	48,558	55,273
Genie Renewables [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets		3,171
Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 32,843	$ 26,991

Business Segment Information _3

Business Segment Information (Details Textual)	6 Months Ended
	Jun. 30, 2021Segment
Business Segment Information (Textual)
Number of reportable segments	3

Commitments and Contingencies_2

Commitments and Contingencies (Details) $ in Thousands	Jun. 30, 2021USD ($)
Commitments and Contingencies [Abstract]
Remainder of 2021	$ 72,759
2022	45,246
2023	22,690
2024	3,890
2025	418
Thereafter
Total payments	$ 145,003

Commitments and Contingencies_3

Commitments and Contingencies (Details Textual)	Mar. 12, 2021USD ($)	Jul. 31, 2021USD ($)	May 31, 2021USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Jun. 30, 2021GBP (£)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)
Commitments and Contingencies (Textual)
Future purchase commitments				$ 145,003,000				$ 145,003,000
Aggregate performance bond outstanding				13,800,000				13,800,000
Trade accounts payable				18,000,000				18,000,000
New York PSC [Member]
Commitments and Contingencies (Textual)
Gross revenue				10,300	$ 27,400
Electricity [Member]
Commitments and Contingencies (Textual)
Future purchase commitments				90,100,000				90,100,000
Purchase of Electricity expenses				6,600,000	9,900,000			6,500,000	$ 19,900,000
Renewable energy credits [Member]
Commitments and Contingencies (Textual)
Future purchase commitments				54,900,000				54,900,000
Purchase of renewable energy credit				$ 5,800,000	2,900,000			$ 8,400,000	$ 6,500,000
Shell Exclusive Supply Contract with Shoreditch [Member]
Commitments and Contingencies (Textual)
Additional period of extended payment facilities							30 days	30 days
Long-term purchase commitment, Maximum amount | £							£ 5,000,000
Basis spread on variable rate for extended payment facilities				5.00%				5.00%
Additional charges per therm | £							0.9
Agreed to make payments totaling				$ 4,100,000				$ 4,100,000
Trade Accounts Receivable [Member]
Commitments and Contingencies (Textual)
Assets pledged as collateral to BP Energy				46,600,000				46,600,000
Restricted Cash [Member]
Commitments and Contingencies (Textual)
Assets pledged as collateral to BP Energy				400,000				400,000
State of Connecticut Public Utilities Regulatory Authority [Member] | Town Square [Member] | Settlement Agreement [Member]
Commitments and Contingencies (Textual)
Gross revenue					$ 15,900,000			6,500
Accrued payables for customer complaints				400,000				400,000
State of Connecticut Public Utilities Regulatory Authority [Member] | Residents Energy [Member] | Settlement Agreement [Member]
Commitments and Contingencies (Textual)
Gross revenue				100,000				200,000
Accrued payables for customer complaints			$ 300,000	300,000				300,000
Loss Contingency, Penalty period for marketing activities			36 months
Settlement payment amount	$ 1,500,000
Loss Contingency, Penalty period for suspension of license	18 months
State of Connecticut Public Utilities Regulatory Authority [Member] | Residents Energy [Member] | Settlement Agreement [Member] | Subsequent Event [Member]
Commitments and Contingencies (Textual)
Accrued payables for customer complaints		$ 400
Loss Contingency, Penalty period for marketing activities		15 months
Office of the Attorney General of the State of Illinois [Member] | Residents Energy [Member] | Settlement Agreement [Member]
Commitments and Contingencies (Textual)
Gross revenue				4,900,000		$ 13,000,000
Settlement payment amount				0				0
State of Maine Public Utility Commission [Member] | Town Square [Member]
Commitments and Contingencies (Textual)
Gross revenue								300,000
State of Maine Public Utility Commission [Member] | Town Square [Member] | Settlement Agreement [Member]
Commitments and Contingencies (Textual)
Gross revenue						$ 800,000
Settlement payment amount				$ 0				$ 0

Debt (Details)

Debt (Details) - USD ($) $ in Millions	May 13, 2020	Dec. 11, 2019	Dec. 05, 2019	Apr. 04, 2017	Nov. 28, 2019	Dec. 31, 2020	Oct. 16, 2020	Apr. 30, 2020
Line of Credit Facility [Line Items]
Revolving loan facility								$ 3.5
JPMorgan Chase Bank [Member]
Line of Credit Facility [Line Items]
Credit facility, description			June 30, 2021</span>, there are no letters of credit issued by JP Morgan Chase Bank. At <span style="color: #000000; font-family: 'Times New Roman'; font-size: 13.3333px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 31.6667px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">June 30, 2021</span>, the cash collateral of $5.7 million was included in restricted cash—short-term in the consolidated balance sheet." id="sjs-D6">the Company entered into the first amendment of Credit Agreement with JPMorgan Chase Bank (“Credit Agreement”) to extend the maturity date of December 31, 2020. On December 8, 2020, the Company entered into the second amendment of its existing Credit Agreement to extend the maturity date to December 31, 2021. 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, &lt;span style="color: #000000; font-family: 'Times New Roman'; font-size: 13.3333px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 31.6667px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">June 30, 2021&lt;/span>, there are no letters of credit issued by JP Morgan Chase Bank. At &lt;span style="color: #000000; font-family: 'Times New Roman'; font-size: 13.3333px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: justify; text-indent: 31.6667px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">June 30, 2021&lt;/span>, the cash collateral of $5.7 million was included in restricted cash—short-term in the consolidated balance sheet.
Loan with Tokyo Star Bank [Member]
Line of Credit Facility [Line Items]
Credit facility, description	see</span> Note 5). At December 31, 2020, the effective interest rate was 3.0%." id="sjs-B9">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") with maturity date of November 13, 2020. On November 13, 2020, Genie Japan and Tokyo Star Bank amended the May 2020 Loan to extend the maturity date to May 13, 2021. 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 incurred interest at 3.0% per annum and was payable monthly. In May 2021, the Company completed the divestiture of Genie Japan including balance of the May 2020 Loan (&lt;span style="font-style: italic;">see&lt;/span> Note 5). At December 31, 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]
Line of Credit Facility [Line Items]
Maximum principal amount on revolving line of credit				$ 20
Interest rate on principal outstanding, description				outstanding principal amount incurred interest at LIBOR plus 4.5% per annum.
Maturity date				Apr. 3, 2020
Revolving loan facility						$ 2.5
Effective interest rate						6.41%
Notes Payable to Banks
Line of Credit Facility [Line Items]
Annual interest rate		5.95%
Outstanding balance of notes payable		$ 0.9
Notes payable, frequency of periodic payment		monthly
Period of notes payable		10 years
Fixed interest of outstanding principal amount of notes payable		4.75%
Payment of the remaining principal amount of notes payable							$ 0.9

Recently Issued Accounting St_2

Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Recently Issued Accounting Standards (Textual)
Accumulated deficit	$ (54,017)	$ (56,658)