Zion Oil & Gas (ZNOG) 10-Q 12 Nov 20 2020 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 10, 2020
Document Information Line Items
Entity Registrant Name	ZION OIL & GAS INC
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		234,621,569
Amendment Flag	false
Entity Central Index Key	0001131312
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 18,621	$ 4,845
Fixed short term bank and escrow deposits - restricted	2,158	1,090
Prepaid expenses and other	617	511
Other deposits	558	197
Governmental receivables	9	34
Other receivables	31	222
Total current assets	21,994	6,899
Unproved oil and gas properties, full cost method (see Note 4)	11,794	10,637
Property and equipment at cost
Net of accumulated depreciation of $541 and $505	88	115
Right of Use Lease Assets (see Note 7)	476	634
Other assets
Drilling rig and related inventory (see note 2J)	4,636
Assets held for severance benefits	403	371
Total other assets	5,039	371
Total assets	39,391	18,656
Current liabilities
Accounts payable	165	108
Obligation under capital lease	20
Lease obligation - current (see Note 7)	207	239
Asset retirement obligation	571	585
Derivative liability (see Note 6)	131	129
10% Senior convertible bonds, net of unamortized deferred financing cost of $16 and $0 and unamortized debt discount of $325 and $0 at September 30, 2020 and December 31, 2019 respectively (see Note 5)	2,906
Accrued liabilities	718	826
Total current liabilities	4,718	1,887
Long-term liabilities
Lease obligation - non-current (see Note 7)	307	450
Obligation under capital lease		19
10% Senior convertible bonds, net of unamortized deferred financing cost of $0 and $36 and unamortized debt discount of $0 and $422 at September 30, 2020 and December 31, 2019 respectively (see Note 5)		2,574
Provision for severance pay	462	402
Total long-term liabilities	769	3,445
Total liabilities	5,487	5,332
Commitments and contingencies (see Note 8)
Stockholders’ equity
Common stock, par value $.01; Authorized: 400,000,000 shares at September 30, 2020: Issued and outstanding: 231,762,828 and 123,973,084 shares at September 30, 2020 and December 31, 2019 respectively	2,318	1,240
Additional paid-in capital	242,722	217,892
Accumulated deficit	(211,136)	(205,808)
Total stockholders’ equity	33,904	13,324
Total liabilities and stockholders’ equity	$ 39,391	$ 18,656

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Accumulated depreciation	$ 541	$ 505
Unamortized deferred financing cost current, net	16	0
Unamortized debt discount current	325	0
Unamortized deferred financing cost	0	36
Unamortized deferred financing cost non-current, net	$ 0	$ 422
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in Shares)	400,000,000	400,000,000
Common stock, issued (in Shares)	231,762,828	123,973,084
Common stock, outstanding (in Shares)	231,762,828	123,973,084

Consolidated Condensed Statemen

Consolidated Condensed Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
General and administrative	$ 1,139	$ 1,098	$ 3,227	$ 3,020
Impairment of unproved oil and gas properties		86		314
Other	563	497	1,608	1,606
Loss from operations	(1,702)	(1,681)	(4,835)	(4,940)
Other income (expense), net
Gain (loss) on derivative liability	49	90	(2)	172
Foreign exchange loss	(4)	(9)	(7)	(9)
Financial expenses, net	(139)	(19)	(484)	(325)
Loss, before income taxes	(1,796)	(1,619)	(5,328)	(5,102)
Income taxes
Net loss	$ (1,796)	$ (1,619)	$ (5,328)	$ (5,102)
Net (loss), gain per share of common stock
Basic and diluted (in US$) (in Dollars per share)	$ (0.01)	$ (0.02)	$ (0.03)	$ (0.07)
Weighted-average shares outstanding
Basic and diluted (in thousands) (in Shares)	202,877	82,001	171,296	75,657

Consolidated Condensed Statem_2

Consolidated Condensed Statement of Changes in Stockholders’ Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock		Additional paid-in Capital		Accumulated deficit	Total
Beginning balances at Dec. 31, 2018	$ 664		$ 203,580		$ (199,115)	$ 5,129
Beginning balances (in Shares) at Dec. 31, 2018	66,405
Funds received from sale of DSPP units and shares	$ 230		8,668			8,898
Funds received from sale of DSPP units and shares (in Shares)	22,956
Value of bonds converted to shares		[1]	2			2
Value of bonds converted to shares (in Shares)	6
Bond interest paid in shares	$ 4		323			327
Bond interest paid in shares (in Shares)	422
Funds received from option exercises	$ 1					1
Funds received from option exercises (in Shares)	68
Value of options granted to employees, directors and others as non-cash compensation			177			177
Net loss					(5,102)	(5,102)
Ending balances at Sep. 30, 2019	$ 899		212,750		(204,217)	9,432
Ending balances (in Shares) at Sep. 30, 2019	89,857
Beginning balances at Jun. 30, 2019	$ 784		209,466		(202,598)	7,652
Beginning balances (in Shares) at Jun. 30, 2019	78,371
Funds received from sale of DSPP units and shares	$ 115		3,147			3,262
Funds received from sale of DSPP units and shares (in Shares)	11,470
Value of bonds converted to shares		[1]
Value of bonds converted to shares (in Shares)	1
Funds received from option exercises		[1]		[1]			[1]
Funds received from option exercises (in Shares)	15
Value of options granted to employees, directors and others as non-cash compensation			137			137
Net loss					(1,619)	(1,619)
Ending balances at Sep. 30, 2019	$ 899		212,750		(204,217)	9,432
Ending balances (in Shares) at Sep. 30, 2019	89,857
Beginning balances at Dec. 31, 2019	$ 1,240		217,892		(205,808)	13,324
Beginning balances (in Shares) at Dec. 31, 2019	123,973
Funds received from sale of DSPP units and shares	$ 1,053		24,464			25,517
Funds received from sale of DSPP units and shares (in Shares)	105,354
Value of bonds converted to shares		[1]
Value of bonds converted to shares (in Shares)	1
Bond interest paid in shares	$ 18		307			325
Bond interest paid in shares (in Shares)	1,782
Funds received from option exercises	$ 7					7
Funds received from option exercises (in Shares)	653
Value of options granted to employees, directors and others as non-cash compensation			59			59
Net loss					(5,328)	(5,328)
Ending balances at Sep. 30, 2020	$ 2,318		242,722		(211,136)	33,904
Ending balances (in Shares) at Sep. 30, 2020	231,763
Beginning balances at Jun. 30, 2020	$ 1,799		230,220		(209,340)	22,679
Beginning balances (in Shares) at Jun. 30, 2020	179,909
Funds received from sale of DSPP units and shares	$ 516		12,499			13,015
Funds received from sale of DSPP units and shares (in Shares)	51,589
Funds received from option exercises	$ 3					3
Funds received from option exercises (in Shares)	265
Value of options granted to employees, directors and others as non-cash compensation			3			3
Net loss					(1,796)	(1,796)
Ending balances at Sep. 30, 2020	$ 2,318		$ 242,722		$ (211,136)	$ 33,904
Ending balances (in Shares) at Sep. 30, 2020	231,763
[1]	Less than one thousand.

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (5,328)		$ (5,102)
Adjustments required to reconcile net loss to net cash used in operating activities:
Depreciation	36		38
Cost of options issued to employees, directors and others as non-cash compensation	59		177
Amortization of debt discount related to convertible bonds	332		268
Non-cash interest expense	101		49
Change in derivative liability	2		(172)
Impairment of unproved oil and gas properties			314
Change in assets and liabilities, net:
Other deposits	(361)		86
Prepaid expenses and other	(106)		218
Governmental receivables	25		7
Lease obligation - current	(32)		224
Lease obligation - non current	(143)		469
Right of use lease assets	158		(639)
Other receivables	191		(203)
Severance pay	28		13
Accounts payable	31		(82)
Asset retirement obligation	(14)		(42)
Accrued liabilities	(125)		(52)
Net cash used in operating activities	(5,146)		(4,429)
Cash flows from investing activities
Acquisition of property and equipment	(9)		(4)
Acquisition of drilling rig and related equipment	(4,636)
Investment in unproved oil and gas properties	(880)		(3,940)
Net cash used in investing activities	(5,525)		(3,944)
Cash flows from financing activities
Payments related to capital lease	(9)		(9)
Proceeds from exercise of stock options	7		1
Proceeds from issuance of stock and exercise of warrants	25,517		8,898
Net cash provided by financing activities	25,515		8,890
Net increase in cash, cash equivalents and restricted cash	14,844		517
Cash, cash equivalents and restricted cash - beginning of period	5,935		4,125
Cash, cash equivalents and restricted cash - end of period	20,779		4,642
Supplemental schedule of cash flow information
Cash paid for interest	2		2
Non-cash investing and financing activities:
Convertible Bond interest paid in shares	325		327
Cost of options capitalized to oil & gas properties
Unpaid investments in oil & gas properties	183		884
10% Senior Convertible Bonds converted to shares		[1]	2
Capitalized convertible bond interest attributed to oil and gas properties	$ 110		$ 181
[1]	Less than one thousand

Consolidated Condensed Statem_4

Consolidated Condensed Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Income Statement [Abstract]
Cash and cash equivalents	$ 18,621	$ 4,845	$ 3,380	$ 2,791
Restricted cash included in fixed short-term bank deposits	2,158	1,090	1,262	1,325
Restricted cash included in fixed long-term bank deposits				9
Total	$ 20,779	$ 5,935	$ 4,642	$ 4,125

Nature of Operations, Basis of

Nature of Operations, Basis of Presentation and Going Concern	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Nature of Operations, Basis of Presentation and Going Concern	Note 1 - Nature of Operations, Basis of Presentation and Going Concern A. Nature of Operations Zion Oil & Gas, Inc., a Delaware corporation (“we,” “our,” “Zion” or the “Company”) is an oil and gas exploration company with a history of 20 years of oil & gas exploration in Israel. As of September 30, 2020, the Company has no revenues from its oil and gas operations. Zion maintains its corporate headquarters in Dallas, Texas. The Company also has branch offices in Caesarea, Israel and Geneva, Switzerland. The purpose of the Israel branch is to support the Company’s operations in Israel, and the purpose of the Switzerland branch is to operate a foreign treasury center for the Company. On January 24, 2020, Zion incorporated a wholly owned subsidiary, Zion Drilling, Inc., a Delaware corporation, for the purpose of owning a drilling rig and related equipment and excess inventory, and on January 31, 2020, Zion incorporated another wholly owned subsidiary, Zion Drilling Services, Inc., a Delaware corporation, to act as the contractor providing such drilling services. When Zion is not using the rig for its own exploration activities, Zion Drilling Services may contract with other operators in Israel to provide drilling services at market rates then in effect. Zion has the trademark “ZION DRILLING” filed with the United States Patent and Trademark Office. Zion has the trademark filed with the World Intellectual Property Organization in Geneva, Switzerland, pursuant to the Madrid Agreement and Protocol. In addition, Zion has the trademark filed with the Israeli Trademark Office in Israel. Exploration Rights/Exploration Activities The Company currently holds one active petroleum exploration license onshore Israel, the Megiddo-Jezreel License, comprising approximately 99,000 acres, which is scheduled to terminate on December 2, 2020, absent an accommodation from the Ministry of Energy. See Item 1A. Risk Factors. The Megiddo Jezreel #1 (“MJ #1”) exploratory well was spud on June 5, 2017 and drilled to a total depth (“TD”) of 5,060 meters (approximately 16,600 feet). Thereafter, the Company successfully cased and cemented the well while awaiting the approval of the testing protocol. The Ministry of Energy approved the well testing protocol on April 29, 2018. During the fourth quarter of 2018, the Company testing protocol was concluded at the MJ#1 well. The test results confirmed that the MJ #1 well did not contain hydrocarbons in commercial quantities in the zones tested. As a result, in the year ended December 31, 2018, the Company recorded a non-cash impairment charge to its unproved oil and gas properties of $30,906,000. During the three and nine months ended September 30, 2020, the Company did not record any post-impairment charges. During the three and nine months ended September 30, 2019, the Company recorded a post-impairment charge of approximately $86,000 and $314,000, respectively. The MJ#1 well provided Zion with information Zion believes is important for potential future exploration efforts within its license area. As with many frontier wildcat wells, the MJ#1 also left several questions unanswered. While not meant to be an exhaustive list, a summary of what Zion believes to be key information learned in the MJ#1 well is as follows: 1. The MJ#1 encountered much higher subsurface temperatures at a depth shallower than expected before drilling the well. In our opinion, this is significant because reaching a minimum temperature threshold is necessary for the generation of hydrocarbons from an organic-rich source rock. 2. The known organic rich (potentially hydrocarbon bearing) Senonian age source rocks that are typically present in this part of Israel were not encountered as expected. Zion expected these source rocks to be encountered at approximately 1,000 meters in the MJ#1 well. 3. MJ#1 had natural fractures, permeability (the ability of fluid to move through the rock) and porosity (pore space in rock) that allowed the sustained flow of formation fluid in the shallower Jurassic and lower Cretaceous age formations between approximately 1,200 and 1,800 meters. While no hydrocarbons were encountered, Zion believes this fact is nonetheless significant because it provides important information about possible reservoir pressures and the ability of fluids to move within the formation and to the surface. 4. MJ#1 encountered oil in the Triassic Mohilla formation which Zion believes suggests an active deep petroleum system is in Zion’s license area. There was no natural permeability or porosity in the Triassic Mohilla formation to allow formation fluid to reach the surface naturally during testing and thus the MJ#1 was not producible or commercial. 5. The depths and thickness of the formations we encountered varied greatly from pre-drill estimates. This required the MJ#1 to be drilled to a much greater depth than previously expected. Zion has tied these revised formation depths to seismic data which will allow for more accurate interpretation and mapping in the future. A summary of what Zion believes to be some key questions left to be answered are: 1. Is the missing shallow Senonian age source rock a result of regional erosion, or is it missing because of a fault that cut the well-bore and could be reasonably expected to be encountered in the vicinity of the MJ#1 drill site? Zion believes this is an important question to answer because if the Senonian source rocks do exist in this area, the high temperatures encountered are sufficient to mature these source rocks and generate oil. 2. Do the unusually high shallow subsurface temperatures extend regionally beyond the MJ#1 well, which could allow for the generation of hydrocarbons in the Senonian age source rock within our license area? 3. As a consequence of seismic remapping, where does the MJ#1 well lie relative to the potential traps at the Jurassic and Triassic levels and was the well location too low on the structures and deeper than the potential hydrocarbons within those traps? Agile Seismic Processing Services (“ASPS”) has completed processing the final data set for interpretation. Agile is now available for after service support if any questions arise. The final processing QC report was provided to Zion by Agile in late Q2 2020. Zion has provided the Ministry of Energy with the processing reports with the steps completed to date. Zion is on target to provide the required final interpretation report for the November 2020 timeline. The Geology and Geophysics team generated the final interpretation report during Q3 2020. Zion’s in-house Geology and Geophysics team are continuing on a larger interpretation of 3D areas, along with potential exploration locations located in the western portion of the Megiddo-Jezreel license area. The MJ02 drilling plan, which anticipates approximately five (5) months to drill and test the well, was approved by the Ministry of Energy on July 29, 2020. The Ministry of Energy also requested the approvals of the Building Planning Commission which Zion obtained in late Q2 2020. See Item 1A. Risk Factors. Megiddo-Jezreel Petroleum License, No. 401 (“MJL”) The Megiddo-Jezreel License (No. 401) was awarded on December 3, 2013 for a three-year primary term through December 2, 2016 with the possibility of additional one-year extensions up to a maximum of seven years. The current scheduled date of termination is December 2, 2020, absent an accommodation from the Ministry of Energy. The Megiddo-Jezreel License lies onshore, south and west of the Sea of Galilee, and we continue our exploration focus here as it appears to possess the key geologic ingredients of an active petroleum system with significant exploration potential. On January 31, 2019, Zion submitted its Application for Extension of Continued Work Program Due Date on the Megiddo-Jezreel License No. 401. The additional time was necessary to finalize the work program. On February 3, 2019 Israel’s Petroleum Commissioner granted Zion’s work program report extension to February 28, 2019, as shown below: Number Activity Description Execution by: 1 Submit program for continuation of work under license 28 February 2019 On February 24, 2019 and thereafter on February 26, 2019 Zion submitted its proposed 2019 Work Program on the Megiddo-Jezreel License No. 401. On February 28, 2019 Israel’s Petroleum Commissioner officially approved the revised and updated Work Program on the Megiddo-Jezreel License No. 401 as shown below: Number Activity description Execution by: 1 Submission of seismic survey plan to the Commissioner and execution of an agreement with a contractor to perform 30 April 2019 2 Commence 3D seismic survey in an area of approximately 50 square kilometers 1 August 2019 3 Transfer of field material configuration and processed material to the Ministry pursuant to Ministry guidelines 15 December 2019 4 Submit interpretation report 20 February 2020 On April 30, 2019 Zion submitted its Application for Extension of Continued Work Program Due Date on the Megiddo-Jezreel License No. 401. The additional time was necessary for Zion to conduct a 3D survey in an area of approximately 72 square kilometers. This required, among others, extensive permitting activities with relevant local landowners, the Israel Land Authority (“ILA”), certain authorities and others, and the seismic survey might not conclude prior to the beginning of the rainy season in Israel. This in turn would result in additional delay, as rain and mud are not conducive to the performance of a seismic survey which includes extensive use of vibrators. Zion’s proposed new timelines and activity descriptions are shown below: Number Activity description Execution by: 1 Submission of seismic survey plan to the Commissioner and execution of an agreement with a contractor to perform 30 November 2019 2 Commence 3D seismic survey in an area of approximately 72 square kilometers 1 April 2020 3 Transfer of field material configuration and processed material to the Ministry pursuant to Ministry guidelines 15 August 2020 4 Submit interpretation report 15 November, 2020 On May 1, 2019, Israel’s Petroleum Commissioner granted Zion’s work program report extension. As previously disclosed, the Company required authorization from the ILA, the formal lessor of the land to Kibbutz Sde Eliyahu, on whose property the drilling pad is currently situated, to access and utilize the drill site (“surface use agreement”). The Company received this authorization on July 4, 2016. This was preceded by the Company’s May 15, 2016 signed agreement with the kibbutz. On January 11, 2017, an agreement was signed by the Company and the ILA by which the surface usage agreement was extended through December 3, 2017. On December 31, 2017, an agreement was signed by the Company and the ILA by which the surface usage agreement was extended through December 3, 2019. On July 1, 2019, an agreement was signed by the Company and the ILA by which the surface usage agreement was extended through December 3, 2020. B. Basis of Presentation The accompanying unaudited interim consolidated condensed financial statements of Zion Oil & Gas, Inc. have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with Article 8-03 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting only of normal recurring accruals necessary for a fair statement of financial position, results of operations and cash flows, have been included. The information included in this Quarterly Report on Form 10-Q should be read in conjunction with the financial statements and the accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. The year-end balance sheet data presented for comparative purposes was derived from audited financial statements, but does not include all disclosures required by GAAP. The results of operations for the three and nine months ended September 30, 2020 are not necessarily indicative of the operating results for the year ending December 31, 2020 or for any other subsequent interim period. C. Going Concern The Company incurs cash outflows from operations, and all exploration activities and overhead expenses to date have been financed by way of equity or debt financing. The recoverability of the costs incurred to date is uncertain and dependent upon achieving significant commercial production. The Company’s ability to continue as a going concern is dependent upon obtaining the necessary financing to undertake further exploration and development activities and ultimately generating profitable operations from its oil and natural gas interests in the future. The Company’s current operations are dependent upon the adequacy of its current assets to meet its current expenditure requirements and the accuracy of management’s estimates of those requirements. Should those estimates be materially incorrect, the Company’s ability to continue as a going concern may be impaired. The financial statements have been prepared on a going concern basis, which contemplates realization of assets and liquidation of liabilities in the ordinary course of business. During the nine months ended September 30, 2020, the Company incurred a net loss of approximately $5.33 million and had an accumulated deficit of approximately $211.1 million. These factors raise substantial doubt about the Company’s ability to continue as a going concern. To carry out planned operations, the Company must raise additional funds through additional equity and/or debt issuances or through profitable operations. There can be no assurance that this capital or positive operational income will be available to the Company, and if it is not, the Company may be forced to curtail or cease exploration and development activities. The financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 2 - Summary of Significant Accounting Policies A. Net Gain (Loss) per Share Data Basic and diluted net (loss) gain per share of common stock, par value $0.01 per share (“Common Stock”), is presented in conformity with ASC 260-10 “Earnings Per Share.” Diluted net loss per share is the same as basic net loss per share, as the inclusion of 10,219,066 and 10,404,146 and 9,836,644 and 10,123,095 Common Stock equivalents in the three and nine month period ended September 30, 2020 and 2019 respectively, would be anti-dilutive. B. Use of Estimates The preparation of the accompanying financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of unproved oil and gas properties, deferred tax assets, asset retirement obligations and legal contingencies. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. The Company adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity, foreign currency, and energy markets have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. The full extent to which the COVID-19 pandemic may directly or indirectly impact our business, results of operations and financial condition, will depend on future developments that are uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain it or treat COVID-19, as well as the economic impact on local, regional, national and international markets. We have made estimates of the impact of COVID-19 within our financial statements, and although there is currently no major impact, there may be changes to those estimates in future periods. Actual results may differ from these estimates. C. Oil and Gas Properties and Impairment The Company follows the full-cost method of accounting for oil and gas properties. Accordingly, all costs associated with acquisition, exploration and development of oil and gas reserves, including directly related overhead costs, are capitalized. All capitalized costs of oil and gas properties, including the estimated future costs to develop proved reserves, are amortized on the unit-of-production method using estimates of proved reserves. Investments in unproved properties and major development projects are not amortized until proved reserves associated with the projects can be determined or until impairment occurs. If the results of an assessment indicate that the properties are impaired, the amount of the impairment is included in loss from continuing operations before income taxes, and the adjusted carrying amount of the proved properties is amortized on the unit-of-production method. The Company’s oil and gas property represents an investment in unproved properties. These costs are excluded from the amortized cost pool until proved reserves are found or until it is determined that the costs are impaired. All costs excluded are reviewed at least quarterly to determine if impairment has occurred. The amount of any impairment is charged to expense since a reserve base has not yet been established. Impairment requiring a charge to expense may be indicated through evaluation of drilling results, relinquishing drilling rights or other information. During the fourth quarter of 2018, the Company testing protocol was concluded at the Megiddo Jezreel #1 (“MJ #1”) well. The test results confirmed that the MJ #1 well did not contain hydrocarbons in commercial quantities in the zones tested. As a result of the above determination, in the year ended December 31, 2018, the Company recorded a non-cash impairment charge to its unproved oil and gas properties of $30,906,000. During the three and nine months ended September 30, 2020, the Company did not record any post-impairment charges. During the three and nine months ended September 30, 2019, the Company recorded a post-impairment charge of approximately $86,000 and $314,000, respectively (see Note 4). Currently, the Company has no economically recoverable reserves and no amortization base. The Company’s unproved oil and gas properties consist of capitalized exploration costs of $11,794,000 and $10,637,000 as of September 30, 2020, and December 31, 2019, respectively. D. Fair Value Measurements The Company follows Accounting Standards Codification (ASC) 820, “Fair Value Measurements and Disclosures,” as amended by Financial Accounting Standards Board (FASB) Financial Staff Position (FSP) No. 157 and related guidance. Those provisions relate to the Company’s financial assets and liabilities carried at fair value and the fair value disclosures related to financial assets and liabilities. ASC 820 defines fair value, expands related disclosure requirements, and specifies a hierarchy of valuation techniques based on the nature of the inputs used to develop the fair value measures. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, assuming the transaction occurs in the principal or most advantageous market for that asset or liability. The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs, when determining fair value. The three tiers are defined as follows: ● Level 1—Observable inputs that reflect quoted market prices (unadjusted) for identical assets or liabilities in active markets; ● Level 2—Observable inputs other than quoted prices in active markets that are observable either directly or indirectly in the marketplace for identical or similar assets and liabilities; and ● Level 3—Unobservable inputs that are supported by little or no market data, which require the Company to develop its own assumptions. The Company’s financial instruments, including cash and cash equivalents, accounts payable and accrued liabilities, are carried at historical cost. At September 30, 2020, and December 31, 2019, the carrying amounts of these instruments approximated their fair values because of the short-term nature of these instruments. Derivative instruments are carried at fair value, generally estimated using the Binomial Model. E. Derivative Liabilities In accordance with ASC 815-40-25 and ASC 815-10-15 Derivatives and Hedging and ASC 480-10-25 Liabilities-Distinguishing Liabilities from Equity, the embedded derivatives associated with the Convertible Bonds are accounted for as a liability during the term of the related Convertible Bonds (see Note 6). F. Stock-Based Compensation ASC 718, “Compensation – Stock Compensation,” prescribes accounting and reporting standards for all share-based payment transactions in which employee services are acquired. Transactions include incurring liabilities, or issuing or offering to issue shares, options, and other equity instruments such as employee stock ownership plans and stock appreciation rights. Share-based payments to employees, including grants of employee stock options, are recognized as compensation expense in the financial statements based on their fair values. That expense is recognized over the period during which an employee is required to provide services in exchange for the award, known as the requisite service period (usually the vesting period). The Company accounts for stock-based compensation issued to non-employees and consultants in accordance with the provisions of ASC 505-50, “Equity – Based Payments to Non-Employees.” Measurement of share-based payment transactions with non-employees is based on the fair value of whichever is more reliably measurable: (a) the goods or services received; or (b) the equity instruments issued. The fair value of the share-based payment transaction is determined at the earlier of performance commitment date or performance completion date. G. Warrants In connection with the Dividend Reinvestment and Stock Purchase Plan (“DSPP”) financing arrangements, the Company has issued warrants to purchase shares of its common stock. The outstanding warrants are stand-alone instruments that are not puttable or mandatorily redeemable by the holder and are classified as equity awards. The Company measures the fair value of the awards using the Black-Scholes option pricing model as of the measurement date. Warrants issued in conjunction with the issuance of common stock are initially recorded and accounted as a part of the DSPP investment as additional paid-in capital of the common stock issued. All other warrants are recorded at fair value and expensed over the requisite service period or at the date of issuance, if there is not a service period. Warrants granted in connection with ongoing arrangements are more fully described in Note 3, Stockholders’ Equity H. Related parties Parties are considered to be related to the Company if the parties, directly or indirectly, through one or more intermediaries, control, are controlled by, or are under common control with the Company. Related parties also include principal owners of the Company, its management, members of the immediate families of principal owners of the Company and its management and other parties with which the Company may deal if one party controls or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests. All transactions with related parties are recorded at fair value of the goods or services exchanged. Zion did not have any related party transactions for the periods covered in this report, with the exception of recurring monthly consulting fees paid to certain management personnel. I. Recently Adopted Accounting Pronouncements ASU 2016-02 and ASU 2018-01 – Leases (Topic 842) In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”) in order to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet for those leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term on the balance sheet. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 (including interim periods within those periods) using a modified retrospective approach and early adoption is permitted. Zion adopted ASU 2016-02 in the first quarter of 2019. Presently, Zion has operating leases for office space in Dallas, Texas and in Caesarea, Israel plus various leases for motor vehicles. These leases have been accounted for under ASU 2016-02 in 2019 and 2020 by establishing a right-of-use asset and a corresponding current lease liability and non-current lease liability. Zion is not subject to any loan covenants and therefore, the increase in assets and liabilities does not have a material impact on its business. In January 2018, the FASB issued ASU 2018-01, “Land Easement Practical Expedient for Transition to Topic 842.” The amendments in this Update provide an optional transition practical expedient to not evaluate under Topic 842 existing or expired land easements that were not previously accounted for as leases under Topic 840, Leases. An entity that elects this practical expedient should evaluate new or modified land easements under Topic 842 beginning at the date that the entity adopts Topic 842. An entity that does not elect this practical expedient should evaluate all existing or expired land easements in connection with the adoption of the new lease requirements in Topic 842 to assess whether they meet the definition of a lease. The Company does not have any land easements and believes that this ASU 2018-01 has no effect on the Company. ASU 2016-15 – “Classification of Certain Cash Receipts and Cash Payments” In August 2016, the FASB issued AS 2016-15, “Classification of Certain Cash Receipts and Cash Payments”, which clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The effective date for ASU 2016-15 is for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. Early adoption is permitted. The Company does not believe that this ASU has any impact on our financial statements. ASU 2018-05 – Income Taxes (Topic 740) In March 2018, the FASB issued ASU 2018-05, “Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118”. This ASU expresses the view of the staff regarding application of Topic 740, Income Taxes, in the reporting period that includes December 22, 2017, the date on which the Tax Cuts and Jobs Act (H.R.1, An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018) was signed into law. The Company is currently evaluating the impact of adopting ASU 2018-05 on our financial statements. The Company does not believe that the adoption of any recently issued accounting pronouncements in 2020 had a significant impact on our financial position, results of operations, or cash flow, except for ASC Update No. 2016-02—Leases, which requires organizations to recognize lease assets and lease liabilities on the balance sheet for leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term on the balance sheet. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 (including interim periods within those periods) using a modified retrospective approach and early adoption is permitted. The Company adopted ASU 2016-02 in the first quarter of 2019. See Note 7 for more complete details on balances at September 30, 2020, and December 31, 2019. J. Depreciation and Accounting for Drilling Rig and Inventory On March 12, 2020, Zion entered into a Purchase and Sale Agreement with Central European Drilling kft, a Hungarian corporation, to purchase an onshore oil and gas drilling rig, drilling pipe, related equipment and excess inventory for a purchase price of $5.6 million in cash, subject to acceptance testing and potential downward adjustment. We remitted to the Seller $250,000 on February 6, 2020 as earnest money towards the purchase price. The Closing anticipated by the Agreement also took place on March 12, 2020 by the Seller’s execution and delivery of a Bill of Sale to us. On March 13, 2020, the Seller retained the earnest money deposit, and the Company remitted $4,350,000 to the seller towards the purchase price and $1,000,000 (the “Holdback Amount”) was deposited in escrow with American Stock Transfer and Trust Company LLC, as escrow agent, through November 30, 2020, or as extended by mutual agreement of the parties, pending a determination, if any, by us of any operating deficiency in the drilling rig. Should we determine in our sole opinion that the drilling rig is not in satisfactory operating condition, then upon notice to the Seller, we and the Seller shall jointly determine if the operating deficiencies identified by us existed prior to the closing of the transaction. If it is determined that these deficiencies existed prior to the closing, then the Seller will undertake to cure the deficiencies within a reasonable time period. If the Seller is unable or unwilling to cure the deficiencies within the time period agrees to between the parties, we may solicit third party bids to repair the deficiencies and the cost thereof shall be paid out of the Holdback Amount. The drilling rig was shipped from the Port of Constanta, Romania on November 6, 2020 and arrived at the Port of Haifa, Israel on November 11, 2020. Customs documentation and pre- clearance procedures continue with a local broker and agent in Israel. The rig-up drilling crew traveled to Tel Aviv, Israel on October 21, 2020 allowing for the government mandated 14-day quarantine. The crew logistics and quarantine quarters were prepared and later approved by the Ministry of Interior and Health. Covid-19 restrictions are forcing fluid planning and orders from the Health Ministry. All ancillary rig items have been purchased or rented for the drilling process. Drill bits, casing, logging services, mud-logging and directional drilling have all been secured and master service agreements in place. Well site cellar and conductor pipe/civil works were completed for the MJ02 well and approved by the Ministry of Energy staff after visiting the pad site. Since the rig was purchased and closed during March 2020, it is sound accounting practice for this purchase to be recorded on Zion’s books as a long term fixed asset. The full purchase price of the drilling rig was $5.6 million, inclusive of approximately $900,000 in spare parts inventory (“spare parts” or “inventory”). The value of the inventory is contained inside the drilling rig and inventory account on the balance sheet and not broken out separately. However, only $4,600,000 of the purchase price is charged to the drilling rig and inventory account. The remaining $1,000,000 represents funds held in escrow until the rig undergoes acceptance testing in Israel. This $1,000,000 is presently on our books as a fixed short term escrow deposit as of September 30, 2020 and we’ve confirmed this balance with the escrow agent. The Seller further agreed to allow the Buyer to store the drilling rig on its premises, at Buyer’s risk of loss. The Seller has agreed to not charge the Buyer any rental fees ($1,500/month) as of September 30, 2020. In accordance with GAAP accounting rules, per the matching principle, monthly depreciation will be recorded beginning in the month that the asset is “placed in service.” The expectation at this point in time is that this date would be sometime in Q4 2020 (however, this is subject to change given the coronavirus pandemic and other logistical factors). Due to the high quality of the I-35 drilling rig (the rig Zion purchased), we believe that the useful life is 10 years. Furthermore, we believe that straight-line depreciation is the best GAAP accounting method that most appropriately reflects the matching principle. As mentioned previously, there is approximately $900,000 worth of consumable inventory included in the rig purchase. When the drilling rig and inventory items arrive at the Israeli port or perhaps later at the well site, it is expected that there will be a verification/count of the inventory. Any such physical documentation of such count(s) will be obtained and saved in our files. Zion will also plan to obtain a physical count of the inventory at the end of each quarter, or as close to such date as practical, in accordance with our normal inventory procedures. Zion will use the First In First Out (“FIFO”) method of accounting for the inventory, meaning that the earliest items purchased will be the first item charged to the well in which the inventory gets consumed. Zion expects the useful life of the rig to be 10 years. The depreciation method used will be straight line. It is also noteworthy that various components and systems on the rig will be subject to certifications by the manufacturer to ensure that the rig is maintained at optimal levels. Per standard practice in upstream oil and gas, each certification performed on our drilling rig increases the useful life of the rig by five years. The costs of each certification will be added to the drilling rig account and our straight-line amortization will be adjusted accordingly.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2020
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Note 3 - Stockholders’ Equity The Company’s shareholders approved to amend the Company’s Amended and Restated Certificate of Incorporation to increase the number of shares of common stock, par value $0.01, that the Company is authorized to issue from 200,000,000 shares to 400,000,000 shares, effective June 11, 2020. A. 2011 Equity Incentive Stock Option Plan During the nine months ended September 30, 2020, the Company granted the following options from the 2011 Equity Incentive Plan for employees, directors and consultants, to purchase as non-cash compensation: i. Options to purchase 110,000 shares of Common Stock to five senior officers at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through January 6, 2030. The fair value of the options at the date of grant amounted to approximately $57,000. ii. Options to purchase 10,000 shares of Common Stock were granted to one staff member at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through September 1, 2030. The fair value of the options at the date of grant amounted to approximately $2,000. During the nine months ended September 30, 2019, the Company granted the following options from the 2011 Equity Incentive Plan for employees, directors and consultants, to purchase as non-cash compensation: i. Options to purchase 25,000 shares of Common Stock to one senior officer at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through January 6, 2029. The fair value of the options at the date of grant amounted to approximately $10,000. ii. Options to purchase 100,000 shares of Common Stock to one senior officer at an exercise price of $0.01 per share. The options are exercisable through May 1, 2029. However, the vesting and exercisability of these options is subject to the following schedule: (a) 50,000 options vest on September 1, 2019 and (b) the remaining 50,000 options vest on January 1, 2020. The fair value of the options at the date of grant amounted to $55,000. iii Options to purchase 100,000 shares of Common Stock were granted to one senior officer at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through July 1, 2029. The fair value of the options at the date of grant amounted to approximately $35,000. iv. Options to purchase 10,000 shares of Common Stock were granted to one staff member at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through September 1, 2029. The fair value of the options at the date of grant amounted to approximately $3,000. v. Options to purchase 25,000 shares of Common Stock were granted to one senior officer at an exercise price of $0.28 per share. The options vested upon grant and are exercisable through September 3, 2029. The fair value of the options at the date of grant amounted to approximately $7,000. vi. Options to purchase 215,000 shares of Common Stock were granted to 10 staff members and consultants at an exercise price of $0.01 per share. The options vested upon grant and are exercisable through September 18, 2029. The fair value of the options at the date of grant amounted to approximately $65,000. B. 2011 Non-Employee Directors Stock Option Plan During the nine months ended September 30, 2020, the Company did not grant any qualified (market value) options from the 2011 Non-Employee Directors Stock Option Plan to its directors. During the nine months ended September 30, 2019, the Company grant the following qualified (market value) options from the 2011 Non-Employee Directors Stock Option Plan for directors to purchase as non-cash compensation: i. Options to purchase 25,000 shares of Common Stock to one board member at an exercise price of $0.28 per share. The options vested upon grant and are exercisable through September 3, 2025. The fair value of the options at the date of grant amounted to approximately $7,000. C. Stock Options The stock option transactions since January 1, 2020 are shown in the table below: Number of Weighted Average US$ Outstanding, December 31, 2019 5,195,250 1.12 Changes during 2020 to: Granted to employees, officers, directors and others 120,000 0.01 Expired/Cancelled/Forfeited (605,000 ) 1.77 Exercised (652,500 ) 0.01 Outstanding, September 30, 2020 4,057,750 1.17 Exercisable, September 30, 2020 4,057,750 1.17 The following table summarizes information about stock options outstanding as of September 30, 2020: Shares underlying outstanding options (non-vested) Shares underlying outstanding options (fully vested) Range of Number outstanding Weighted average remaining contractual life (years) Weighted Range of exercise Number Weighted average remaining contractual life (years) Weighted US$ US$ US$ US$ — — — — 0.01 10,000 3.12 0.01 — — — — 0.01 5,000 3.70 0.01 — — — — 0.01 20,000 5.67 0.01 — — — — 0.01 130,000 6.25 0.01 — — — — 0.01 60,000 6.54 0.01 — — — — 0.01 40,000 7.00 0.01 — — — — 0.01 97,500 7.25 0.01 — — — — 0.01 25,000 7.26 0.01 — — — — 0.01 30,000 7.41 0.01 — — — — 0.01 6,000 7.51 0.01 — — — — 0.01 25,000 8.26 0.01 — — — — 0.01 50,000 8.58 0.01 — — — — 0.01 10.000 8.92 0.01 — — — — 0.01 125,000 8.96 0.01 — — — — 0.01 370,000 9.13 0.01 — — — — 0.01 60,000 9.26 0.01 — — — — 0.01 10,000 9.92 0.01 — — — — 0.16 340,000 5.19 0.16 — — — — 0.16 150,000 9.19 0.16 — — — — 0.18 25,000 5.17 0.18 — — — — 0.28 25,000 4.92 0.28 — — — — 0.28 25,000 8.92 0.28 — — — — 1.33 25,000 2.57 1.33 — — — — 1.38 108,000 0.26 1.38 — — — — 1.38 105,307 4.26 1.38 — — — — 1.55 250,000 1.68 1.55 — — — — 1.67 260,000 0.01 1.67 — — — — 1.67 405,943 4.01 1.67 — — — — 1.70 218,500 2.22 1.70 — — — — 1.75 250,000 2.76 1.75 — — — — 1.78 25,000 3.93 1.78 — — — — 2.03 25,000 0.58 2.03 — — — — 2.31 250,000 3.25 2.31 2.61 471,500 1.18 2.61 — — — — 4.15 25,000 3.76 4.15 0.01-4.15 4,057,750 1.17 Granted to employees The following table sets forth information about the weighted-average fair value of options granted to employees and directors during the year, using the Black Scholes option-pricing model and the weighted-average assumptions used for such grants: For the nine months ended 2020 2019 Weighted-average fair value of underlying stock at grant date $ 0.50 $ 0.37 Dividend yields — — Expected volatility 90%-103% 87%-110 Risk-free interest rates 0.26%-1.61% 1.35%-2.53 Expected lives (in years) 5.00 3.00-5.34 Weighted-average grant date fair value $ 0.49 $ 0.36 Granted to non-employees The following table sets forth information about the weighted-average fair value of options granted to non-employees during the year, using the Black Scholes option-pricing model and the weighted-average assumptions used for such grants: For the nine months ended 2020 2019 Weighted-average fair value of underlying stock at grant date $ — $ 0.31 Dividend yields — — Expected volatility — 81 % Risk-free interest rates — 1.80 % Expected lives (in years) — 10 Weighted-average grant date fair value $ — $ 0.30 The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant for periods corresponding with the expected life of the options. The expected life represents the weighted average period of time that options granted are expected to be outstanding. The expected life of the options granted to employees and directors is calculated based on the Simplified Method as allowed under Staff Accounting Bulletin No. 110 (“SAB 110”), giving consideration to the contractual term of the options and their vesting schedules, as the Company does not have sufficient historical exercise data at this time. The expected life of the option granted to non-employees equals their contractual term. In the case of an extension of the option life, the calculation was made on the basis of the extended life. D. Compensation Cost for Warrant and Option Issuances The following table sets forth information about the compensation cost of warrant and option issuances recognized for employees and directors: For the three months ended September 30, 2020 2019 US$ thousands US$ thousands 3 134 For the nine months ended September 30, 2020 2019 US$ thousands US$ thousands 59 174 The following table sets forth information about the compensation cost of warrant and option issuances recognized for non-employees: For the three months ended September 30, 2020 2019 US$ thousands US$ thousands — 3 For the nine months ended September 30, 2020 2019 US$ thousands US$ thousands — 3 The following table sets forth information about the compensation cost of option issuances recognized for employees and non-employees and capitalized to Unproved Oil & Gas properties: For the three months ended September 30, 2020 2019 US$ thousands US$ thousands — — For the nine months ended September 30, 2020 2019 US$ thousands US$ thousands — — E. Dividend Reinvestment and Stock Purchase Plan (“DSPP”) On March 27, 2014, we launched our Dividend Reinvestment and Stock Purchase Plan (the “DSPP”) pursuant to which stockholders and interested investors can purchase shares of the Company’s Common Stock as well as units of the Company’s securities directly from the Company. The terms of the DSPP are described in the Prospectus Supplement originally filed on March 31, 2014 (the “Original Prospectus Supplement”) with the Securities and Exchange Commission (“SEC”) under the Company’s effective registration Statement on Form S-3, as thereafter amended. On January 13, 2015, the Company amended the Original Prospectus Supplement (“Amendment No. 3”) to provide for a unit option (the “Unit Option”) under the DSPP comprised of one share of Common Stock and three Common Stock purchase warrants with each unit priced at $4.00. Each warrant afforded the participant the opportunity to purchase the Company’s Common Stock at a warrant exercise price of $1.00. Each of the three warrants series has different expiration dates that have been extended. The ZNWAB warrants first became exercisable on May 2, 2016 and, in the case of ZNWAC on May 2, 2017 and in the case of ZNWAD on May 2, 2018, at a per share exercise price of $1.00. As of May 2, 2017, any outstanding ZNWAB warrants expired. As of May 2, 2018, any outstanding ZNWAC warrants expired. On May 29, 2019, the Company extended the termination date of the ZNWAD Warrant by one (1) year from the expiration date of May 2, 2020 to May 2, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAD Warrant by two (2) years from the expiration date of May 2, 2021 to May 2, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On November 1, 2016, the Company launched a unit offering (the “Unit Program”) under the Company’s DSPP pursuant to which participants could purchase units comprised of seven shares of Common Stock and seven Common Stock purchase warrants, at a per unit purchase price of $10. The warrant is referred to as “ZNWAE.” The ZNWAE warrants became exercisable on May 1, 2017 and continued to be exercisable through May 1, 2020 at a per share exercise price of $1.00. On May 29, 2019, the Company extended the termination date of the ZNWAE Warrant by one (1) year from the expiration date of May 1, 2020 to May 1, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAE Warrant by two (2) years from the expiration date of May 1, 2021 to May 1, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share at the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company may, in its sole discretion, accelerate the termination of the warrant upon providing 60 days advanced notice to the warrant holders. On February 23, 2017, the Company filed a Form S-3 with the SEC (Registration No. 333-216191) as a replacement for the Form S-3 (Registration No. 333-193336), for which the three year period ended March 31, 2017, along with the base Prospectus and Supplemental Prospectus. The Form S-3, as amended, and the new base Prospectus became effective on March 10, 2017, along with the Prospectus Supplement that was filed and became effective on March 10, 2017. The Prospectus Supplement under Registration No. 333-216191 describes the terms of the DSPP and replaces the prior Prospectus Supplement, as amended, under the prior Registration No. 333-193336. On May 22, 2017, the Company launched a new unit offering (the “New Unit Program”). The New Unit Program consisted of a new combination of common stock and warrants, a new time period in which to purchase under the program, and a new unit price, but otherwise the same unit program features, conditions and terms in the Prospectus Supplement applied. The New Unit Program terminated on July 12, 2017. This New Unit Program enabled participants to purchase Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) the number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s Common Stock as reported on the NASDAQ on the unit purchase date and (ii) Common Stock purchase warrants to purchase an additional 25 shares of Common Stock at a warrant exercise price of $1.00 per share. The warrant is referred to as “ZNWAF.” All ZNWAF warrants became exercisable on August 14, 2017 and continued to be exercisable through August 14, 2020 at a per share exercise price of $1.00. On May 29, 2019, the Company extended the termination date of the ZNWAF Warrant by one (1) year from the expiration date of August 14, 2020 to August 14, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAF Warrant by two (2) years from the expiration date of August 14, 2021 to August 14, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share as the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company has the sole discretion to accelerate the termination date of the warrant upon providing 60 days advanced notice to the warrant holders. An Amendment No. 2 to the Prospectus Supplement (as described below) was filed on October 12, 2017. Under Amendment No. 2, the Company initiated another Unit Option Program which terminated on December 6, 2017. This Unit Option Program enabled participants to purchase Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) a certain number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s Common Stock as reported on the NASDAQ on the unit purchase date and (ii) Common Stock purchase warrants to purchase an additional 15 shares of Common Stock at a warrant exercise price of $1.00 per share. The warrant is referred to as “ZNWAG.” The warrants became exercisable on January 8, 2018 and continue to be exercisable through January 8, 2021 at a per share exercise price of $1.00. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share as the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company has the sole discretion to accelerate the termination date of the warrant upon providing 60 days advanced notice to the warrant holders. On February 1, 2018, the Company launched another Unit Option Program which terminated on February 28, 2018. The Unit Option consisted of Units of our securities where each Unit (priced at $250.00 each) was comprised of (i) 50 shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional 50 shares of Common Stock. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock acquired under the Units purchased. Each warrant affords the investor the opportunity to purchase one share of Company Common Stock at a warrant exercise price of $5.00. The warrant is referred to as “ZNWAH.” The warrants became exercisable on April 2, 2018 and continue to be exercisable through April 2, 2020 at a per share exercise price of $5.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of April 2, 2019 to April 2, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAH Warrant by one (1) year from the expiration date of April 2, 2020 to April 2, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAH Warrant by two (2) years from the expiration date of April 2, 2021 to April 2, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On August 21, 2018, the Company initiated another Unit Option Program, and it terminated on September 26, 2018. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) a certain number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s publicly traded common stock as reported on the NASDAQ on the Unit Purchase Date and (ii) Common Stock purchase warrants to purchase an additional twenty-five (25) shares of Common Stock. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock acquired under the Units purchased. Each warrant affords the investor the opportunity to purchase one share of Company Common Stock at a warrant exercise price of $1.00. The warrant is referred to as “ZNWAJ.” The warrants became exercisable on October 29, 2018 and continued to be exercisable through October 29, 2020 at a per share exercise price of $1.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of October 29, 2019 to October 29, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAJ Warrant by one (1) year from the expiration date of October 29, 2020 to October 29, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAJ Warrant by two (2) years from the expiration date of October 29, 2021 to October 29, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On December 10, 2018, the Company initiated another Unit Option Program, and it terminated on January 23, 2019. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) is comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional two hundred and fifty (250) shares of Common Stock at a per share exercise price of $0.01. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants that are acquired under the Units purchased. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $0.01. The warrant is referred to as “ZNWAK.” The warrants became exercisable on February 25, 2019 and continued to be exercisable through February 25, 2020 at a per share exercise price of $0.01. On May 29, 2019, the Company extended the termination date of the ZNWAK Warrant by one (1) year from the expiration date of February 25, 2020 to February 25, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAK Warrant by two (2) years from the expiration date of February 25, 2021 to February 25, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On April 24, 2019, the Company’s most recent Unit Option Program began and it terminated on June 26, 2019, after the Company, on June 5, 2019, extended the termination date of the Unit Option Program. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional fifty (50) shares of Common Stock at a per share exercise price of $2.00. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants acquired under the Units purchased. For Plan participants who enrolled into the Unit Program with the purchase of at least one Unit and also enrolled in the separate Automatic Monthly Investments (“AMI”) program at a minimum of $50.00 per month or more, received an additional twenty-five (25) warrants at an exercise price of $2.00 during this Unit Option Program. The twenty-five (25) additional warrants were for enrolling into the AMI program. Existing subscribers to the AMI were entitled to the additional twenty-five (25) warrants once, if they purchased at least one (1) unit during the Unit program. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $2.00. The warrant is referred to as “ZNWAL.” The warrants became exercisable on August 26, 2019 and continue to be exercisable through August 26, 2021 at a per share exercise price of $2.00. On September 15, 2020, the Company extended the termination date of the ZNWAL Warrant by two (2) years from the expiration date of August 26, 2021 to August 26, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On December 9, 2019 Zion filed an Amendment No. 1 to the Registration Statement on Form S-1 (File No. 333-235299) solely for the purpose of re-filing a revised Exhibit 5.1 to the Registration Statement. This Amendment No. 1 does not modify any provision of the prospectus that forms a part of the Registration Statement and accordingly, such prospectus has not been included herein. For the three and nine months ended September 30, 2020, approximately $13,015,000, and $25,517,000 were raised under the DSPP program, respectively. For the three and nine months ended September 30, 2019, approximately $3,262,000, and $8,898,000 were raised under the DSPP program, respectively. The company raised approximately $1,753,000 from the period October 1, 2020 through November 11, 2020, under the DSPP program. The warrants represented by the company notation ZNWAA are tradeable on the OTCQX market under the symbol ZNOGW. However, all of the other warrants characterized above, in the table below, and throughout this Form 10-Q, are not tradeable and are used internally for classification and accounting purposes only. F. Subscription Rights Offering On April 2, 2018 the Company announced an offering (“2018 Subscription Rights Offering”) through American Stock Transfer & Trust Company, LLC (the “Subscription Agent”), at no cost to the shareholders, of non-transferable Subscription Rights (each “Right” and collectively, the “Rights”) to purchase its securities to persons who owned shares of our Common Stock on April 13, 2018 (“the Record Date”). Pursuant to the 2018 Subscription Rights Offering, each holder of shares of common stock on the Record Date received non-transferable Subscription Rights, with each Right comprised of one share of the Company Common Stock, par value $0.01 per share (the “Common Stock”) and one Common Stock Purchase Warrant to purchase an additional one share of Common Stock. Each Right could be exercised or subscribed at a per Right subscription price of $5.00. Each Warrant affords the investor the opportunity to purchase one share of the Company Common Stock at a warrant exercise price of $3.00. The warrant is referred to as “ZNWAI.” The warrants became exercisable on June 29, 2018 and continue to be exercisable through June 29, 2020 at a per share exercise price of $3.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of June 29, 2019 to June 29, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAI Warrant by one (1) year from the expiration date of June 29, 2020 to June 29, 2021. On September 15, 2020, the Company extended the termination date of the ZNWAI Warrant by two (2) years from the expiration date of June 29, 2021 to June 29, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. Each shareholder received .10 (one tenth) of a Subscription Right (i.e. one Subscription Right for each 10 shares owned) for each share of the Company’s Common Stock owned on the Record Date. The 2018 Subscription Rights Offering terminated on May 31, 2018. The Company raised net proceeds of approximately $3,038,000, from the subscription of Rights, after deducting fees and expenses of $243,000 incurred in connection with the rights offering. G. Warrant Table The warrants balances at December 31, 2019 and transactions since January 1, 2020 are shown in the table below: Warrants Exercise Warrant Termination Date Outstanding Balance, 12/31/2019 Warrants Warrants Exercised Warrants Expired Outstanding Balance, 09/30/2020 ZNWAA $ 2.00 01/31/2023 1,498,804 - - - 1,498,804 ZNWAD $ 1.00 05/02/2023 243,853 - - - 243,853 ZNWAE $ 1.00 05/02/2023 2,144,470 - (371 ) - 2,144,099 ZNWAF $ 1.00 08/14/2023 359,585 - - - 359,585 ZNWAG $ 1.00 01/08/2023 240,578 - - - 240,578 ZNWAH $ 5.00 04/19/2023 372,400 - - - 372,400 ZNWAI $ 3.00 06/29/2023 640,730 - - - 640,730 ZNWAJ $ 1.00 10/29/2023 546,000 - - - 546,000 ZNWAK $ 0.01 02/25/2023 457,725 - (17,700 ) - 440,025 ZNWAL $ 2.00 08/26/2023 517,925 - (50 ) - 517,875 Outstanding warrants 7,022,070 - (18,121 ) - 7,003,949 H. Warrant Descriptions The price and the expiration dates for the series of warrants to investors are as follows * : Period of Grant US$ Expiration Date ZNWAA Warrants B ,C March 2013 – December 2014 2.00 January 31, 2023 ZNWAD Warrants A,B,C January 2015 – March 2016 1.00 May 02, 2023 ZNWAE Warrants B,C November 2016 – March 2017 1.00 May 01, 2023 ZNWAF Warrants A,B,C May 2017 – July 2017 1.00 August 14, 2023 ZNWAG Warrants C October 2017 – December 2017 1.00 January 08, 2023 ZNWAH Warrants A,B,C February 2018 5.00 April 2, 2023 ZNWAI Warrants A,B,C April 2018 – May 2018 3.00 June 29, 2023 ZNWAJ Warrants B,C August 2018 – September 2018 1.00 October 29, 2023 ZNWAK Warrants B,C December 2018 – January 2019 0.01 February 25, 2023 ZNWAL Warrants C July 2019 – August 2019 2.00 August 26, 2023 * Zion’s ZNWAB Warrants expired on May 2, 2017, and the ZNWAC Warrants expired on May 2, 2018 A On December 4, 2018, the Company extended the termination date of the Warrants by one (1) year. B On May 29, 2019, the Company extended the termination date of the Warrants by one (1) year. C On September 15, 2020, the Company extended the termination date of the Warrants by two (2) years.

Unproved Oil and Gas Properties

Unproved Oil and Gas Properties, Full Cost Method	9 Months Ended
	Sep. 30, 2020
Oil and Gas Property [Abstract]
Unproved Oil and Gas Properties, Full Cost Method	Note 4 - Unproved Oil and Gas Properties, Full Cost Method Unproved oil and gas properties, under the full cost method, are comprised as follows: September 30, December 31, US$ thousands US$ thousands Excluded from amortization base: Drilling costs, and other operational related costs 1,390 1,227 Capitalized salary costs 1,912 1,759 Capitalized interest costs 1,100 990 Legal and seismic costs, license fees and other preparation costs 7,352 6,636 Other costs 40 25 11,794 10,637 During the three and nine months ended September 30, 2020 and 2019, Impairment of unproved oil and gas properties comprised as follows: For the three months ended For the nine months ended 2020 2019 2020 2019 US$ US$ US$ US$ Excluded from amortization base: Drilling costs, and other operational related costs - 85 - 244 Other costs - 1 - 70 - 86 - 314 Changes in Unproved oil and gas properties during the three and nine months ended September 30, 2020 and 2019 are as follows: For the three months ended For the nine months ended 2020 2019 2020 2019 US$ US$ US$ US$ Excluded from amortization base: Drilling costs, and other operational related costs 79 4 163 5 Capitalized salary costs 56 47 153 136 Capitalized interest costs 51 143 110 181 Legal costs, license fees and other preparation costs 318 1,387 716 1,655 Other costs 4 7 15 18 508 *1,588 *1,157 *1,995 * Inclusive of non-cash amounts of approximately $154,000, and $891,000 during the three months ended September 30, 2020, and 2019, respectively * Inclusive of non-cash amounts of approximately $293,000, and $1,065,000 during the nine months ended September 30, 2020, and 2019, respectively

Senior Convertible Bonds

Senior Convertible Bonds	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Senior Convertible Bonds	Note 5 - Senior Convertible Bonds Rights Offering -10% Senior Convertible Notes due May 2, 2021 On October 21, 2015, the Company filed with the SEC a prospectus supplement for a rights offering. Under the rights offering, the Company distributed at no cost, 360,000 non-transferable subscription rights to subscribe for, on a per right basis, two 10% Convertible Senior Bonds par $100 due May 2, 2021 (the “Notes”), to shareholders of the Company’s Common Stock on October 15, 2015, the record date for the offering. Each whole subscription right entitled the participant to purchase two convertible bonds at a purchase price of $100 per bond. Effective October 21, 2015, the Company executed a Supplemental Indenture, as issuer, with the American Stock Transfer & Trust Company, LLC, a New York limited liability trust company (“AST”), as trustee for the Notes (the “Indenture”). On March 31, 2016, the rights offering terminated. On May 2, 2016, the Company issued approximately $3,470,000 aggregate principal amount of convertible bonds or “Notes” in connection with the rights offering. The Company received net proceeds of approximately $3,334,000, from the issuance of the Notes, after deducting fees and expenses of $136,000 incurred in connection with the offering. These costs have been discounted as deferred offering costs. The Notes contain a convertible option that gives rise to a derivative liability, which is accounted for separately from the Notes (see below and Note 6). Accordingly, the Notes were initially recognized at fair value of approximately $1,844,000, which represents the principal amount of $3,470,000 from which a debt discount of approximately $1,626,000 (which is equal to the fair value of the convertible option) was deducted. During the three and nine months ended September 30, 2020, the Company recorded approximately $7,000 and $20,000, respectively, in amortization expense related to the deferred financing costs, approximately $97,000 and $314,000, respectively, in debt discount amortization net, and approximately $0 and $3,000, respectively, related to financing gains associated with Notes converted to shares. During the three and nine months ended September 30, 2019, the Company recorded approximately $7,000 and $20,000, respectively, in amortization expense related to the deferred financing costs, approximately $72,000 and $259,000, respectively, in debt discount amortization net, and approximately $1,000 and $11,000, respectively, related to financing gains associated with Notes converted to shares. The Notes are governed by the terms of the Indenture. The Notes are senior unsecured obligations of the Company and bear interest at a rate of 10% per year, payable annually in arrears on May 2 of each year, commencing May 2, 2017. The Notes will mature on May 2, 2021, unless earlier redeemed by the Company or converted by the holder. Interest and principal may be paid, at the Company’s option, in cash or in shares of the Company’s Common Stock. The number of shares for the payment of interest in shares of Common Stock, in lieu of the cash amount, will be based on the average of the closing prices of the Company’s Common Stock as reported by Bloomberg L.P. for the 30 trading days preceding the record date for the payment of interest; such record date has been designated and will always be the 10 th On May 4, 2020, the Company paid its annual 10% interest to its bondholders of record on April 20, 2020. The interest was paid-in-kind (“PIK”) in the form of Common Stock. An average of the Company stock price of $0.182 was determined based on the 30 trading days prior to the record date of April 20, 2020. This figure was used to divide into 10% of the par value of the bonds held by the holders. The Company issued 1,781,504 shares to the accounts of its bondholders. At any time prior to the close of business on the business day immediately preceding April 2, 2021, holders may convert their notes into Common Stock at the conversion rate of 44 shares per $100 bond (which is equivalent to a conversion rate of approximately $2.27 per share). The conversion rate is subject to adjustment from time to time upon the occurrence of certain events, including, but not limited to, the issuance of stock dividends and payment of cash dividends. Beginning May 3, 2018, the Company was entitled to redeem for cash the outstanding Notes at an amount equal to the principal and accrued and unpaid interest, plus a 10% premium. No “sinking fund” is provided for the Notes due May 2, 2021, which means that the Company is not required to periodically redeem or retire the Notes due May 2, 2021. Through the three and nine months ended September 30, 2020, 0 and 28 convertible bonds of $100 each, respectively, have been converted at a conversion rate of approximately $2.27 per share. As a result, the Company issued approximately 0 and 1,232 shares of its Common Stock during the same period, respectively, and recorded approximately $0 and $3,000 in financial income during the same period. Through the three and nine months ended September 30, 2019, 16 and 138 convertible bonds of $100 each, respectively, have been converted at a conversion rate of approximately $2.27 per share. As a result, the Company issued approximately 704 and 6,072 shares of its Common Stock during the same period, respectively, and recorded approximately $1,000 and $11,000 in financial income during the same period. September 30, December 31, US$ US$ 10% Senior Convertible Bonds, on the day of issuance $ 3,470 $ 3,470 Unamortized Debt discount, net $ (325 ) $ (639 ) Bonds converted to shares $ (223 ) $ (221 ) Offering cost, net $ (16 ) $ (36 ) 10% senior Convertible bonds – Long Term Liability $ 2,906 $ 2,574 Capitalized interest for the three and nine months ended September 30, 2020 were $51,000 and $110,000 compared to $143,000 and $181,000 for the three and nine months ended September 30, 2019. Interest expenses for the three and nine months ended September 30, 2020 were $31,000 and $132,000 compared to $0 and $49,000 for the three and nine months ended September 30, 2019.

Derivative Liability

Derivative Liability	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Liability	Note 6 - Derivative Liability The Notes issued by the Company and discussed in Note 5 contain a convertible option that gives rise to a derivative liability. The debt instrument the Company issued includes a make-whole provision, which provides that in the event of conversion by the investor under certain circumstances, the issuer is required to deliver to the holder additional consideration beyond the settlement of the conversion obligation. Because time value make-whole provisions are not clearly and closely related to the debt host and would meet the definition of a derivative if considered freestanding, they are evaluated under the indexation guidance to determine whether they would be afforded the scope exception pursuant to ASC 815-10-15-74(a). This evaluation is generally performed in conjunction with the analysis of the embedded conversion feature. The Company has measured its derivative liability at fair value and recognized the derivative value as a current liability and recorded the derivative value on its balance sheet. Changes in the fair value recorded are recorded as a gain or loss in the accompanying statement of operations. The valuation of the Notes was done by using the Binomial Model, a well-accepted option-pricing model, and based on the Notes’ terms and other parameters the Company identified as relevant for the valuation of the Notes’ Fair Value. The Binomial Model used the forecast of the Company share price during the Note’s contractual term. As of September 30, 2020, the Company’s liabilities that are measured at fair value are as follows: September 30, December 31, Level 3 Total Level 3 Total US$ US$ US$ US$ Fair value of derivative liability 131 131 129 129 Change in value of the derivative liability during 2020 is as follows: US$ Derivative liability fair value at December 31, 2019 129 Loss on derivative liability 2 Derivative liability fair value at September 30, 2020 131 The following table presents the assumptions that were used for the model as of September 30, 2020: September 30, December 31, Convertible Option Fair Value of approximately $ 131,000 $ 129,000 Annual Risk-free Rate 0.11 % 1.59 % Volatility 145.85 % 121.68 % Expected Term (years) 0.59 1.34 Convertible Notes Face Value $ 3,246,700 $ 3,249,500 Expected annual yield on Regular Notes 28.77 % 28.77 % Price of the Underlying Stock $ 0.23 $ 0.17 During the three and nine months ended September 30, 2020, the Company recorded unrealized gains (losses) of approximately $49,000, net, and ($2,000), net, respectively, within the Statements of Operations on derivative liability. During the three and nine months ended September 30, 2019, the Company recorded unrealized gains of approximately $90,000, net, and $172,000, net, respectively, within the Statements of Operations on derivative liability. A slight change in an unobservable input like volatility could have a significant impact on the fair value measurement of the derivative liability.

Right of Use Leases Assets and

Right of Use Leases Assets and Leases Obligations	9 Months Ended
	Sep. 30, 2020
Disclosure Text Block [Abstract]
Right of use leases assets and leases obligations	Note 7 - Right of use leases assets and leases obligations The Company is a lessee in several non-cancellable operating leases, primarily for transportation and office space. The table below presents the operating lease assets and liabilities recognized on the balance sheets as of September 30, 2020: September 30, December 31, US$ US$ Operating lease assets $ 476 $ 634 Operating lease liabilities: Current operating lease liabilities $ 207 $ 239 Non-current operating lease liabilities $ 307 $ 450 Total operating lease liabilities $ 514 $ 689 The depreciable lives of operating lease assets and leasehold improvements are limited by the expected lease term. The Company’s leases generally do not provide an implicit rate, and therefore the Company uses its incremental borrowing rate as the discount rate when measuring operating lease liabilities. The incremental borrowing rate represents an estimate of the interest rate the Company would incur at lease commencement to borrow an amount equal to the lease payments on a collateralized basis over the term of a lease within a particular currency environment. The Company used incremental borrowing rates as of January 1, 2019 for operating leases that commenced prior to that date. The Company’s weighted average remaining lease term and weighted average discount rate for operating leases as of September 30, 2020 are: September 30, Weighted average remaining lease term (years) 2.9 Weighted average discount rate 6.0 % The table below reconciles the undiscounted future minimum lease payments (displayed by year and in the aggregate) under non-cancellable operating leases with terms of more than one year to the total operating lease liabilities recognized on the consolidated condensed balance sheets as of September 30, 2020: US$ October 1, 2020 through December 31, 2020 229 2021 141 2022 141 2023 47 2024 - Thereafter - Total undiscounted future minimum lease payments 558 Less: portion representing imputed interest (44 ) Total undiscounted future minimum lease payments 514 Operating lease costs were $61,000 and $183,000 for the three and nine months ended September 30, 2020, respectively. Operating lease costs were $64,000 and $196,000 for the three and nine months ended September 30, 2019, respectively. Operating lease costs are included within general and administrative expenses on the statements of income. Cash paid for amounts included in the measurement of operating lease liabilities was $69,000 and $203,000 for the three and nine months ended September 30, 2020, respectively. Cash paid for amounts included in the measurement of operating lease liabilities were $69,000 and $208,000 for the three and nine months ended September 30, 2019. These amounts are included in operating activities in the statements of cash flows. Right-of-use assets obtained in exchange for new operating lease liabilities were $0 and $0 for the three and nine months ended September 30, 2020, respectively. Right-of-use assets obtained in exchange for new operating lease liabilities were $0 and $819,000 for the three and nine months ended September 30, 2019, respectively.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 8 - Commitments and Contingencies A. Securities and Exchange Commission (“SEC”) Investigation As previously disclosed by the Company, on June 21, 2018, Zion received a subpoena to produce documents from the Fort Worth office of the SEC informing the Company of the existence of a non-public, fact-finding inquiry into the Company. Prior to its receipt of the subpoena, there had been no previous communication between Zion and the SEC on this issue and was unaware of this investigation. The SEC stated at that time “the investigation and the subpoena do not mean that we have concluded that Zion or anyone else has violated the law.” To date, Zion has fully cooperated with the SEC and will continue to do so in the future. Zion cannot predict when this matter will be resolved or what, if any, action the SEC may take following the conclusion of the investigation. B. Litigation Following the commencement of the SEC investigation, on August 9, 2018, a putative class action (the “class action”) Complaint was filed against Zion, Victor G. Carrillo, the Company’s Chief Executive Officer at such time, and Michael B. Croswell Jr., the Company’s Chief Financial Officer (collectively, the “Defendants”) in the U.S. District Court for the Northern District of Texas. On November 16, 2018, the Court entered an Order in the class action appointing lead plaintiffs and approving lead counsel and on January 22, 2019, an Amended Complaint was filed. On February 1, 2019, a Corrected Amended Class Action Complaint was filed. The suit alleges violations of Section 10(b) of the Securities Exchange Act of 1934 (the “Exchange Act”) and Rule 10b-5 promulgated thereunder by the SEC and Section 11 of the Securities Act of 1933 (the “Securities Act”) against all defendants and alleges violations of Section 20(a) of the Exchange Act and Section 15 of the Securities Act against the individual defendants. The alleged class period is from February 13, 2018 through November 20, 2018. On March 13, 2019, a Motion to Dismiss Plaintiffs’ Corrected Amended Complaint was filed on behalf of Zion, Victor Carrillo and Michael B. Croswell, Jr., pleading numerous grounds in support of their Motion to Dismiss. On April 29, 2019 Plaintiffs filed a Response to Defendants’ Motion to Dismiss, and on May 29, 2019 Defendants filed a Reply to Plaintiffs’ Response. On March 4, 2020, the Court granted Defendants’ Motion and dismissed all claims granting Plaintiffs leave to amend. On March 30, 2020, the Lead Plaintiffs voluntarily dismissed the Class Action with prejudice as to the Company and all other defendants. The Company disputed the above claims and made an advance deposit of $500,000 in 2018 to defense counsel for the cost of defending the litigation. The Company carries insurance that is applicable to these claims. During May 2020, the Company received a refund of approximately $142,000 from its defense counsel pertaining to the above legal claims. On October 29, 2018, Zion received a shareholder request to inspect books and records pursuant to Section 220 of the Delaware General Corporation Law for the purpose of investigating potential corporate mismanagement and alleged breaches of fiduciary duty in connection with public statements made by the Company from March 12, 2018 to May 30, 2018. The Company responded to this request. On August 9, 2019, Zion received two (2) additional shareholder requests from the same law firm to inspect books and records pursuant to section 220 of the Delaware General Corporation Law for the purpose of investigating potential corporate mismanagement and alleged breaches of fiduciary duty in connection with public statements made by the Company from February 1, 2018 to present. Following discussion with counsel to the shareholder, the Company’s counsel produced materials responsive to the shareholders’ request in January 2020. On February 12, 2020, by letter to Zion’s Board of Directors, one of the shareholders making the August 10, 2019 request demanded that the Board investigate, address, remedy, and commence proceedings against certain of the Company’s current and former officers and directors for alleged breaches of fiduciary duties, violations of section 10(b) and 20(a) of the Exchange Act, waste of corporate assets, unjust enrichment, and violations of all other applicable laws. The shareholder alleges wrongdoing in connection with public statements made by the Company from February 1, 2018 regarding the Company’s oil and gas exploration activities, the Company’s accounting and disclosure of expenses, and the Board’s oversight of operations. The Board hired independent counsel to investigate the claims made against certain of the Company’s current and former officers and directors. That investigation has concluded and, based on the findings and recommendations of independent counsel, the Board has decided not to pursue claims against any current or former officer or director. On July 14, 2020, Zion received a request from the same shareholder making the February 12, 2020 demand to inspect books and records pursuant to Section 220 of the Delaware General Corporation Law for the purpose of evaluating the Board’s decision to reject the litigation demand. The Company responded to this request in August 2020. From time to time, the Company may also be subject to routine litigation, claims or disputes in the ordinary course of business. The Company defends itself vigorously in all such matters. However, we cannot predict the outcome or effect of any of the litigation or any other pending litigation or claims. C. Recent Market Conditions – Coronavirus Pandemic During March 2020, a global pandemic was declared by the World Health Organization related to the rapidly growing outbreak of a novel strain of coronavirus (“COVID-19”). The pandemic has significantly impacted the economic conditions in the United States and Israel, as federal, state and local governments react to the public health crisis, creating significant uncertainties in the United States, Israel and world economies. In the interest of public health and safety, jurisdictions (international, national, state and local) where we have operations, restricted travel and required workforces to work from home. As of the date of this report, many of our employees are working from home. However, while there are various uncertainties to navigate, the Company’s business activities are continuing. The situation is rapidly changing and additional impacts to the business may arise that we are not aware of currently. We cannot predict whether, when or the manner in which the conditions surrounding COVID-19 will change including the timing of lifting any restrictions or work from home arrangements. The full extent of COVID-19’s impact on our operations and financial performance depends on future developments that are uncertain and unpredictable, including the duration and spread of the pandemic, its impact on capital and financial markets and any new information that may emerge concerning the severity of the virus, its spread to other regions as well as the actions taken to contain it, among others. D. Environmental and Onshore Licensing Regulatory Matters The Company is engaged in oil and gas exploration and production and may become subject to certain liabilities as they relate to environmental clean-up of well sites or other environmental restoration procedures and other obligations as they relate to the drilling of oil and gas wells or the operation thereof. Various guidelines have been published in Israel by the State of Israel’s Petroleum Commissioner and Energy and Environmental Ministries as it pertains to oil and gas activities. Mention of these older guidelines was included in previous Zion filings. On April 8, 2019 the Energy Ministry issued new procedural guidelines regarding a uniform reporting manner by which the rights holder in a license must submit a quarterly report regarding a summary of license history, the nature, scope, location and results of the exploration work, specification of the amounts expended for the exploration work, and the results and interpretation of the exploration work and basic data on which these results and interpretation are based. On July 18, 2019, the Energy Ministry issued a guidance document entitled “Instructions for Submitting Guarantees with respect to Oil Rights granted pursuant to the Petroleum Law” which states that onshore license applicants are required to deposit a base bank guarantee of $500,000. Furthermore, prior to drilling, an onshore license holder is required to deposit an additional bank guarantee in the amount as determined by the Petroleum Commissioner in accordance with the characteristics of the drilling and the drilling plan but no less than $250,000. The guarantee, as determined by the Commissioner, shall be deposited with the Commissioner Office for each well separately drilled. The Petroleum Commissioner has discretion to raise or lower those amounts or may also forfeit a Company’s existing guarantee and/or cancel a petroleum right under certain circumstances. In addition, new and extended insurance policy guidelines were added. The Petroleum Commissioner may also view non-compliance with the new insurance provisions as breaching the work plan and the rights granted and act accordingly. The Company believes that these new regulations will result in an increase in the expenditures associated with obtaining new exploration rights and drilling new wells. The Company expects that an additional financial burden could occur as a result of requiring cash reserves that could otherwise be used for operational purposes. In addition, these new regulations are likely to continue to increase the time needed to obtain all of the necessary authorizations and approvals to drill and production test exploration wells. E. Bank Guarantees As of September 30, 2020, the Company provided Israeli-required bank guarantees to various governmental bodies (approximately $1,058,000) and others (approximately $83,000) with respect to its drilling operation in an aggregate amount of approximately $1,141,000. The Company also deposited $1,000,000 with its escrow agent with respect to the purchase of a drilling rig in March 2020 and subsequent acceptance testing. The (cash) funds backing these guarantees are held in restricted interest-bearing accounts and are reported on the Company’s balance sheets as fixed short-term bank deposits – restricted. F. Risks Market risk is a broad term for the risk of economic loss due to adverse changes in the fair value of a financial instrument. These changes may be the result of various factors, including interest rates, foreign exchange rates, commodity prices and/or equity prices. In the normal course of doing business, we are exposed to the risks associated with foreign currency exchange rates and changes in interest rates. Foreign Currency Exchange Rate Risks. Interest Rate Risk. The primary objective of our investment activities is to preserve principal while at the same time maximizing yields without significantly increasing risk. To achieve this objective, we invest our excess cash in short-term bank deposits and money market funds that may invest in high quality debt instruments.

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2020
Subsequent Events [Abstract]
Subsequent Events	Note 9 - Subsequent Events (i) On September 2, 2020, Zion began trading its common stock on the OTCQX market under the symbol ZNOG and its warrants under the symbol ZNOGW. On October 27, 2020, the Nasdaq Stock Market, LLC (the Exchange) filed a Form 25-NSE whereby Nasdaq made a determination to delist the common stock and warrants of Zion Oil & Gas, effective October 16, 2020. (ii) Approximately $1,753,000 was collected through the Company’s DSPP program during the period October 1 through November 11, 2020.

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	9 Months Ended
	Sep. 30, 2020
Accounting Policies [Abstract]
Net Gain (Loss) per Share Data	A. Net Gain (Loss) per Share Data Basic and diluted net (loss) gain per share of common stock, par value $0.01 per share (“Common Stock”), is presented in conformity with ASC 260-10 “Earnings Per Share.” Diluted net loss per share is the same as basic net loss per share, as the inclusion of 10,219,066 and 10,404,146 and 9,836,644 and 10,123,095 Common Stock equivalents in the three and nine month period ended September 30, 2020 and 2019 respectively, would be anti-dilutive
Use of Estimates	B. Use of Estimates The preparation of the accompanying financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions about future events. These estimates and the underlying assumptions affect the amounts of assets and liabilities reported, disclosures about contingent assets and liabilities, and reported amounts of revenues and expenses. Such estimates include the valuation of unproved oil and gas properties, deferred tax assets, asset retirement obligations and legal contingencies. These estimates and assumptions are based on management’s best estimates and judgment. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment, which management believes to be reasonable under the circumstances. The Company adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity, foreign currency, and energy markets have combined to increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in those estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. The full extent to which the COVID-19 pandemic may directly or indirectly impact our business, results of operations and financial condition, will depend on future developments that are uncertain, including as a result of new information that may emerge concerning COVID-19 and the actions taken to contain it or treat COVID-19, as well as the economic impact on local, regional, national and international markets. We have made estimates of the impact of COVID-19 within our financial statements, and although there is currently no major impact, there may be changes to those estimates in future periods. Actual results may differ from these estimates.
Oil and Gas Properties and Impairment	C. Oil and Gas Properties and Impairment The Company follows the full-cost method of accounting for oil and gas properties. Accordingly, all costs associated with acquisition, exploration and development of oil and gas reserves, including directly related overhead costs, are capitalized. All capitalized costs of oil and gas properties, including the estimated future costs to develop proved reserves, are amortized on the unit-of-production method using estimates of proved reserves. Investments in unproved properties and major development projects are not amortized until proved reserves associated with the projects can be determined or until impairment occurs. If the results of an assessment indicate that the properties are impaired, the amount of the impairment is included in loss from continuing operations before income taxes, and the adjusted carrying amount of the proved properties is amortized on the unit-of-production method. The Company’s oil and gas property represents an investment in unproved properties. These costs are excluded from the amortized cost pool until proved reserves are found or until it is determined that the costs are impaired. All costs excluded are reviewed at least quarterly to determine if impairment has occurred. The amount of any impairment is charged to expense since a reserve base has not yet been established. Impairment requiring a charge to expense may be indicated through evaluation of drilling results, relinquishing drilling rights or other information. During the fourth quarter of 2018, the Company testing protocol was concluded at the Megiddo Jezreel #1 (“MJ #1”) well. The test results confirmed that the MJ #1 well did not contain hydrocarbons in commercial quantities in the zones tested. As a result of the above determination, in the year ended December 31, 2018, the Company recorded a non-cash impairment charge to its unproved oil and gas properties of $30,906,000. During the three and nine months ended September 30, 2020, the Company did not record any post-impairment charges. During the three and nine months ended September 30, 2019, the Company recorded a post-impairment charge of approximately $86,000 and $314,000, respectively (see Note 4). Currently, the Company has no economically recoverable reserves and no amortization base. The Company’s unproved oil and gas properties consist of capitalized exploration costs of $11,794,000 and $10,637,000 as of September 30, 2020, and December 31, 2019, respectively.
Fair Value Measurements	D. Fair Value Measurements The Company follows Accounting Standards Codification (ASC) 820, “Fair Value Measurements and Disclosures,” as amended by Financial Accounting Standards Board (FASB) Financial Staff Position (FSP) No. 157 and related guidance. Those provisions relate to the Company’s financial assets and liabilities carried at fair value and the fair value disclosures related to financial assets and liabilities. ASC 820 defines fair value, expands related disclosure requirements, and specifies a hierarchy of valuation techniques based on the nature of the inputs used to develop the fair value measures. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, assuming the transaction occurs in the principal or most advantageous market for that asset or liability. The Company uses a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. The hierarchy requires the Company to use observable inputs when available, and to minimize the use of unobservable inputs, when determining fair value. The three tiers are defined as follows: ● Level 1—Observable inputs that reflect quoted market prices (unadjusted) for identical assets or liabilities in active markets; ● Level 2—Observable inputs other than quoted prices in active markets that are observable either directly or indirectly in the marketplace for identical or similar assets and liabilities; and ● Level 3—Unobservable inputs that are supported by little or no market data, which require the Company to develop its own assumptions. The Company’s financial instruments, including cash and cash equivalents, accounts payable and accrued liabilities, are carried at historical cost. At September 30, 2020, and December 31, 2019, the carrying amounts of these instruments approximated their fair values because of the short-term nature of these instruments. Derivative instruments are carried at fair value, generally estimated using the Binomial Model.
Derivative Liabilities	E. Derivative Liabilities In accordance with ASC 815-40-25 and ASC 815-10-15 Derivatives and Hedging and ASC 480-10-25 Liabilities-Distinguishing Liabilities from Equity, the embedded derivatives associated with the Convertible Bonds are accounted for as a liability during the term of the related Convertible Bonds (see Note 6).
Stock-Based Compensation	F. Stock-Based Compensation ASC 718, “Compensation – Stock Compensation,” prescribes accounting and reporting standards for all share-based payment transactions in which employee services are acquired. Transactions include incurring liabilities, or issuing or offering to issue shares, options, and other equity instruments such as employee stock ownership plans and stock appreciation rights. Share-based payments to employees, including grants of employee stock options, are recognized as compensation expense in the financial statements based on their fair values. That expense is recognized over the period during which an employee is required to provide services in exchange for the award, known as the requisite service period (usually the vesting period). The Company accounts for stock-based compensation issued to non-employees and consultants in accordance with the provisions of ASC 505-50, “Equity – Based Payments to Non-Employees.” Measurement of share-based payment transactions with non-employees is based on the fair value of whichever is more reliably measurable: (a) the goods or services received; or (b) the equity instruments issued. The fair value of the share-based payment transaction is determined at the earlier of performance commitment date or performance completion date.
Warrants	G. Warrants In connection with the Dividend Reinvestment and Stock Purchase Plan (“DSPP”) financing arrangements, the Company has issued warrants to purchase shares of its common stock. The outstanding warrants are stand-alone instruments that are not puttable or mandatorily redeemable by the holder and are classified as equity awards. The Company measures the fair value of the awards using the Black-Scholes option pricing model as of the measurement date. Warrants issued in conjunction with the issuance of common stock are initially recorded and accounted as a part of the DSPP investment as additional paid-in capital of the common stock issued. All other warrants are recorded at fair value and expensed over the requisite service period or at the date of issuance, if there is not a service period. Warrants granted in connection with ongoing arrangements are more fully described in Note 3, Stockholders’ Equity
Related parties	H. Related parties Parties are considered to be related to the Company if the parties, directly or indirectly, through one or more intermediaries, control, are controlled by, or are under common control with the Company. Related parties also include principal owners of the Company, its management, members of the immediate families of principal owners of the Company and its management and other parties with which the Company may deal if one party controls or can significantly influence the management or operating policies of the other to an extent that one of the transacting parties might be prevented from fully pursuing its own separate interests. All transactions with related parties are recorded at fair value of the goods or services exchanged. Zion did not have any related party transactions for the periods covered in this report, with the exception of recurring monthly consulting fees paid to certain management personnel.
Recently Adopted Accounting Pronouncements	I. Recently Adopted Accounting Pronouncements ASU 2016-02 and ASU 2018-01 – Leases (Topic 842) In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU 2016-02, Leases (Topic 842) (“ASU 2016-02”) in order to increase transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet for those leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term on the balance sheet. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 (including interim periods within those periods) using a modified retrospective approach and early adoption is permitted. Zion adopted ASU 2016-02 in the first quarter of 2019. Presently, Zion has operating leases for office space in Dallas, Texas and in Caesarea, Israel plus various leases for motor vehicles. These leases have been accounted for under ASU 2016-02 in 2019 and 2020 by establishing a right-of-use asset and a corresponding current lease liability and non-current lease liability. Zion is not subject to any loan covenants and therefore, the increase in assets and liabilities does not have a material impact on its business. In January 2018, the FASB issued ASU 2018-01, “Land Easement Practical Expedient for Transition to Topic 842.” The amendments in this Update provide an optional transition practical expedient to not evaluate under Topic 842 existing or expired land easements that were not previously accounted for as leases under Topic 840, Leases. An entity that elects this practical expedient should evaluate new or modified land easements under Topic 842 beginning at the date that the entity adopts Topic 842. An entity that does not elect this practical expedient should evaluate all existing or expired land easements in connection with the adoption of the new lease requirements in Topic 842 to assess whether they meet the definition of a lease. The Company does not have any land easements and believes that this ASU 2018-01 has no effect on the Company. ASU 2016-15 – “Classification of Certain Cash Receipts and Cash Payments” In August 2016, the FASB issued AS 2016-15, “Classification of Certain Cash Receipts and Cash Payments”, which clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The effective date for ASU 2016-15 is for fiscal years beginning after December 15, 2018, and interim periods within fiscal years beginning after December 15, 2019. Early adoption is permitted. The Company does not believe that this ASU has any impact on our financial statements. ASU 2018-05 – Income Taxes (Topic 740) In March 2018, the FASB issued ASU 2018-05, “Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118”. This ASU expresses the view of the staff regarding application of Topic 740, Income Taxes, in the reporting period that includes December 22, 2017, the date on which the Tax Cuts and Jobs Act (H.R.1, An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018) was signed into law. The Company is currently evaluating the impact of adopting ASU 2018-05 on our financial statements. The Company does not believe that the adoption of any recently issued accounting pronouncements in 2020 had a significant impact on our financial position, results of operations, or cash flow, except for ASC Update No. 2016-02—Leases, which requires organizations to recognize lease assets and lease liabilities on the balance sheet for leases classified as operating leases under previous GAAP. ASU 2016-02 requires that a lessee should recognize a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term on the balance sheet. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 (including interim periods within those periods) using a modified retrospective approach and early adoption is permitted. The Company adopted ASU 2016-02 in the first quarter of 2019. See Note 7 for more complete details on balances at September 30, 2020, and December 31, 2019.
Depreciation and Accounting for Drilling Rig and Inventory	J. Depreciation and Accounting for Drilling Rig and Inventory On March 12, 2020, Zion entered into a Purchase and Sale Agreement with Central European Drilling kft, a Hungarian corporation, to purchase an onshore oil and gas drilling rig, drilling pipe, related equipment and excess inventory for a purchase price of $5.6 million in cash, subject to acceptance testing and potential downward adjustment. We remitted to the Seller $250,000 on February 6, 2020 as earnest money towards the purchase price. The Closing anticipated by the Agreement also took place on March 12, 2020 by the Seller’s execution and delivery of a Bill of Sale to us. On March 13, 2020, the Seller retained the earnest money deposit, and the Company remitted $4,350,000 to the seller towards the purchase price and $1,000,000 (the “Holdback Amount”) was deposited in escrow with American Stock Transfer and Trust Company LLC, as escrow agent, through November 30, 2020, or as extended by mutual agreement of the parties, pending a determination, if any, by us of any operating deficiency in the drilling rig. Should we determine in our sole opinion that the drilling rig is not in satisfactory operating condition, then upon notice to the Seller, we and the Seller shall jointly determine if the operating deficiencies identified by us existed prior to the closing of the transaction. If it is determined that these deficiencies existed prior to the closing, then the Seller will undertake to cure the deficiencies within a reasonable time period. If the Seller is unable or unwilling to cure the deficiencies within the time period agrees to between the parties, we may solicit third party bids to repair the deficiencies and the cost thereof shall be paid out of the Holdback Amount. The drilling rig was shipped from the Port of Constanta, Romania on November 6, 2020 and arrived at the Port of Haifa, Israel on November 11, 2020. Customs documentation and pre- clearance procedures continue with a local broker and agent in Israel. The rig-up drilling crew traveled to Tel Aviv, Israel on October 21, 2020 allowing for the government mandated 14-day quarantine. The crew logistics and quarantine quarters were prepared and later approved by the Ministry of Interior and Health. Covid-19 restrictions are forcing fluid planning and orders from the Health Ministry. All ancillary rig items have been purchased or rented for the drilling process. Drill bits, casing, logging services, mud-logging and directional drilling have all been secured and master service agreements in place. Well site cellar and conductor pipe/civil works were completed for the MJ02 well and approved by the Ministry of Energy staff after visiting the pad site. Since the rig was purchased and closed during March 2020, it is sound accounting practice for this purchase to be recorded on Zion’s books as a long term fixed asset. The full purchase price of the drilling rig was $5.6 million, inclusive of approximately $900,000 in spare parts inventory (“spare parts” or “inventory”). The value of the inventory is contained inside the drilling rig and inventory account on the balance sheet and not broken out separately. However, only $4,600,000 of the purchase price is charged to the drilling rig and inventory account. The remaining $1,000,000 represents funds held in escrow until the rig undergoes acceptance testing in Israel. This $1,000,000 is presently on our books as a fixed short term escrow deposit as of September 30, 2020 and we’ve confirmed this balance with the escrow agent. The Seller further agreed to allow the Buyer to store the drilling rig on its premises, at Buyer’s risk of loss. The Seller has agreed to not charge the Buyer any rental fees ($1,500/month) as of September 30, 2020. In accordance with GAAP accounting rules, per the matching principle, monthly depreciation will be recorded beginning in the month that the asset is “placed in service.” The expectation at this point in time is that this date would be sometime in Q4 2020 (however, this is subject to change given the coronavirus pandemic and other logistical factors). Due to the high quality of the I-35 drilling rig (the rig Zion purchased), we believe that the useful life is 10 years. Furthermore, we believe that straight-line depreciation is the best GAAP accounting method that most appropriately reflects the matching principle. As mentioned previously, there is approximately $900,000 worth of consumable inventory included in the rig purchase. When the drilling rig and inventory items arrive at the Israeli port or perhaps later at the well site, it is expected that there will be a verification/count of the inventory. Any such physical documentation of such count(s) will be obtained and saved in our files. Zion will also plan to obtain a physical count of the inventory at the end of each quarter, or as close to such date as practical, in accordance with our normal inventory procedures. Zion will use the First In First Out (“FIFO”) method of accounting for the inventory, meaning that the earliest items purchased will be the first item charged to the well in which the inventory gets consumed. Zion expects the useful life of the rig to be 10 years. The depreciation method used will be straight line. It is also noteworthy that various components and systems on the rig will be subject to certifications by the manufacturer to ensure that the rig is maintained at optimal levels. Per standard practice in upstream oil and gas, each certification performed on our drilling rig increases the useful life of the rig by five years. The costs of each certification will be added to the drilling rig account and our straight-line amortization will be adjusted accordingly.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2020
Stockholders' Equity (Tables) [Line Items]
Schedule of stock option transactions	Number of Weighted Average US$ Outstanding, December 31, 2019 5,195,250 1.12 Changes during 2020 to: Granted to employees, officers, directors and others 120,000 0.01 Expired/Cancelled/Forfeited (605,000 ) 1.77 Exercised (652,500 ) 0.01 Outstanding, September 30, 2020 4,057,750 1.17 Exercisable, September 30, 2020 4,057,750 1.17
Schedule of stock options outstanding	Shares underlying outstanding options (non-vested) Shares underlying outstanding options (fully vested) Range of Number outstanding Weighted average remaining contractual life (years) Weighted Range of exercise Number Weighted average remaining contractual life (years) Weighted US$ US$ US$ US$ — — — — 0.01 10,000 3.12 0.01 — — — — 0.01 5,000 3.70 0.01 — — — — 0.01 20,000 5.67 0.01 — — — — 0.01 130,000 6.25 0.01 — — — — 0.01 60,000 6.54 0.01 — — — — 0.01 40,000 7.00 0.01 — — — — 0.01 97,500 7.25 0.01 — — — — 0.01 25,000 7.26 0.01 — — — — 0.01 30,000 7.41 0.01 — — — — 0.01 6,000 7.51 0.01 — — — — 0.01 25,000 8.26 0.01 — — — — 0.01 50,000 8.58 0.01 — — — — 0.01 10.000 8.92 0.01 — — — — 0.01 125,000 8.96 0.01 — — — — 0.01 370,000 9.13 0.01 — — — — 0.01 60,000 9.26 0.01 — — — — 0.01 10,000 9.92 0.01 — — — — 0.16 340,000 5.19 0.16 — — — — 0.16 150,000 9.19 0.16 — — — — 0.18 25,000 5.17 0.18 — — — — 0.28 25,000 4.92 0.28 — — — — 0.28 25,000 8.92 0.28 — — — — 1.33 25,000 2.57 1.33 — — — — 1.38 108,000 0.26 1.38 — — — — 1.38 105,307 4.26 1.38 — — — — 1.55 250,000 1.68 1.55 — — — — 1.67 260,000 0.01 1.67 — — — — 1.67 405,943 4.01 1.67 — — — — 1.70 218,500 2.22 1.70 — — — — 1.75 250,000 2.76 1.75 — — — — 1.78 25,000 3.93 1.78 — — — — 2.03 25,000 0.58 2.03 — — — — 2.31 250,000 3.25 2.31 2.61 471,500 1.18 2.61 — — — — 4.15 25,000 3.76 4.15 0.01-4.15 4,057,750 1.17
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	For the three months ended September 30, 2020 2019 US$ thousands US$ thousands 3 134 For the nine months ended September 30, 2020 2019 US$ thousands US$ thousands 59 174
Schedule of warrants description	Period of Grant US$ Expiration Date ZNWAA Warrants B ,C March 2013 – December 2014 2.00 January 31, 2023 ZNWAD Warrants A,B,C January 2015 – March 2016 1.00 May 02, 2023 ZNWAE Warrants B,C November 2016 – March 2017 1.00 May 01, 2023 ZNWAF Warrants A,B,C May 2017 – July 2017 1.00 August 14, 2023 ZNWAG Warrants C October 2017 – December 2017 1.00 January 08, 2023 ZNWAH Warrants A,B,C February 2018 5.00 April 2, 2023 ZNWAI Warrants A,B,C April 2018 – May 2018 3.00 June 29, 2023 ZNWAJ Warrants B,C August 2018 – September 2018 1.00 October 29, 2023 ZNWAK Warrants B,C December 2018 – January 2019 0.01 February 25, 2023 ZNWAL Warrants C July 2019 – August 2019 2.00 August 26, 2023
Dividend Reinvestment And Stock Purchase Plan [Member]
Stockholders' Equity (Tables) [Line Items]
Schedule of warrants description	Warrants Exercise Warrant Termination Date Outstanding Balance, 12/31/2019 Warrants Warrants Exercised Warrants Expired Outstanding Balance, 09/30/2020 ZNWAA $ 2.00 01/31/2023 1,498,804 - - - 1,498,804 ZNWAD $ 1.00 05/02/2023 243,853 - - - 243,853 ZNWAE $ 1.00 05/02/2023 2,144,470 - (371 ) - 2,144,099 ZNWAF $ 1.00 08/14/2023 359,585 - - - 359,585 ZNWAG $ 1.00 01/08/2023 240,578 - - - 240,578 ZNWAH $ 5.00 04/19/2023 372,400 - - - 372,400 ZNWAI $ 3.00 06/29/2023 640,730 - - - 640,730 ZNWAJ $ 1.00 10/29/2023 546,000 - - - 546,000 ZNWAK $ 0.01 02/25/2023 457,725 - (17,700 ) - 440,025 ZNWAL $ 2.00 08/26/2023 517,925 - (50 ) - 517,875 Outstanding warrants 7,022,070 - (18,121 ) - 7,003,949
Employees [Member]
Stockholders' Equity (Tables) [Line Items]
Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model	For the nine months ended 2020 2019 Weighted-average fair value of underlying stock at grant date $ 0.50 $ 0.37 Dividend yields — — Expected volatility 90%-103% 87%-110 Risk-free interest rates 0.26%-1.61% 1.35%-2.53 Expected lives (in years) 5.00 3.00-5.34 Weighted-average grant date fair value $ 0.49 $ 0.36
Non-employees [Member]
Stockholders' Equity (Tables) [Line Items]
Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model	For the nine months ended 2020 2019 Weighted-average fair value of underlying stock at grant date $ — $ 0.31 Dividend yields — — Expected volatility — 81 % Risk-free interest rates — 1.80 % Expected lives (in years) — 10 Weighted-average grant date fair value $ — $ 0.30

Unproved Oil and Gas Properti_2

Unproved Oil and Gas Properties, Full Cost Method (Tables)	9 Months Ended
	Sep. 30, 2020
Oil and Gas Property [Abstract]
Schedule of changes in unproved oil and gas properties	September 30, December 31, US$ thousands US$ thousands Excluded from amortization base: Drilling costs, and other operational related costs 1,390 1,227 Capitalized salary costs 1,912 1,759 Capitalized interest costs 1,100 990 Legal and seismic costs, license fees and other preparation costs 7,352 6,636 Other costs 40 25 11,794 10,637 For the three months ended For the nine months ended 2020 2019 2020 2019 US$ US$ US$ US$ Excluded from amortization base: Drilling costs, and other operational related costs 79 4 163 5 Capitalized salary costs 56 47 153 136 Capitalized interest costs 51 143 110 181 Legal costs, license fees and other preparation costs 318 1,387 716 1,655 Other costs 4 7 15 18 508 *1,588 *1,157 *1,995
Schedule of changes in unproved oil and gas properties, full cost method	For the three months ended For the nine months ended 2020 2019 2020 2019 US$ US$ US$ US$ Excluded from amortization base: Drilling costs, and other operational related costs - 85 - 244 Other costs - 1 - 70 - 86 - 314

Senior Convertible Bonds (Table

Senior Convertible Bonds (Tables)	9 Months Ended
	Sep. 30, 2020
Debt Disclosure [Abstract]
Schedule of senior convertible bonds	September 30, December 31, US$ US$ 10% Senior Convertible Bonds, on the day of issuance $ 3,470 $ 3,470 Unamortized Debt discount, net $ (325 ) $ (639 ) Bonds converted to shares $ (223 ) $ (221 ) Offering cost, net $ (16 ) $ (36 ) 10% senior Convertible bonds – Long Term Liability $ 2,906 $ 2,574

Derivative Liability (Tables)

Derivative Liability (Tables)	9 Months Ended
	Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of change in fair value of derivative liability	September 30, December 31, Level 3 Total Level 3 Total US$ US$ US$ US$ Fair value of derivative liability 131 131 129 129
Schedule of change in fair value of derivative liability	US$ Derivative liability fair value at December 31, 2019 129 Loss on derivative liability 2 Derivative liability fair value at September 30, 2020 131
Schedule of assumption used for the model of derivatives liabilities	September 30, December 31, Convertible Option Fair Value of approximately $ 131,000 $ 129,000 Annual Risk-free Rate 0.11 % 1.59 % Volatility 145.85 % 121.68 % Expected Term (years) 0.59 1.34 Convertible Notes Face Value $ 3,246,700 $ 3,249,500 Expected annual yield on Regular Notes 28.77 % 28.77 % Price of the Underlying Stock $ 0.23 $ 0.17

Right of Use Leases Assets an_2

Right of Use Leases Assets and Leases Obligations (Tables)	9 Months Ended
	Sep. 30, 2020
Disclosure Text Block [Abstract]
Schedule of operating lease assets and liabilities	September 30, December 31, US$ US$ Operating lease assets $ 476 $ 634 Operating lease liabilities: Current operating lease liabilities $ 207 $ 239 Non-current operating lease liabilities $ 307 $ 450 Total operating lease liabilities $ 514 $ 689
Schedule of weighted average remaining lease term and weighted average discount rate for operating leases	September 30, Weighted average remaining lease term (years) 2.9 Weighted average discount rate 6.0 %
Schedule of future minimum lease payments under non-cancellable operating leases	US$ October 1, 2020 through December 31, 2020 229 2021 141 2022 141 2023 47 2024 - Thereafter - Total undiscounted future minimum lease payments 558 Less: portion representing imputed interest (44 ) Total undiscounted future minimum lease payments 514

Nature of Operations, Basis o_2

Nature of Operations, Basis of Presentation and Going Concern (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020USD ($)m²	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)m²	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Apr. 30, 2019m²
Nature of Operations, Basis of Presentation and Going Concern (Details) [Line Items]
Area of land depth, description			MJ#1 had natural fractures, permeability (the ability of fluid to move through the rock) and porosity (pore space in rock) that allowed the sustained flow of formation fluid in the shallower Jurassic and lower Cretaceous age formations between approximately 1,200 and 1,800 meters.
Impairment of oil and gas properties			$ 11,794,000		$ 10,637,000	$ 30,906,000
Net loss	$ (1,796,000)	$ (1,619,000)	(5,328,000)	$ (5,102,000)
Accumulated deficit	$ (211,136,000)		$ (211,136,000)		$ (205,808,000)
Megiddo Jezreel License [Member]
Nature of Operations, Basis of Presentation and Going Concern (Details) [Line Items]
Area of land, approximate (in Square Meters) | m²	99,000		99,000
Area of land depth, description			The Megiddo-Jezreel License (No. 401) was awarded on December 3, 2013 for a three-year primary term through December 2, 2016 with the possibility of additional one-year extensions up to a maximum of seven years.
Post-impairment charge		$ 86,000		$ 314,000
Megiddo Jezreel License [Member] | Exploration Rights [Member]
Nature of Operations, Basis of Presentation and Going Concern (Details) [Line Items]
Area of land depth, description			The Megiddo Jezreel #1 (“MJ #1”) exploratory well was spud on June 5, 2017 and drilled to a total depth (“TD”) of 5,060 meters (approximately 16,600 feet). Thereafter, the Company successfully cased and cemented the well while awaiting the approval of the testing protocol. The Ministry of Energy approved the well testing protocol on April 29, 2018.
AGS [Member]
Nature of Operations, Basis of Presentation and Going Concern (Details) [Line Items]
Area of land, approximate (in Square Meters) | m²							72
Jordan Valley License [Member]
Nature of Operations, Basis of Presentation and Going Concern (Details) [Line Items]
Net loss			$ 5,330,000
Accumulated deficit	$ 211,100,000		$ 211,100,000

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Details) - USD ($)	Feb. 06, 2020	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Jun. 11, 2020	Mar. 12, 2020
Summary of Significant Accounting Policies (Details) [Line Items]
Common stock, par value (in Dollars per share)		$ 0.01			$ 0.01		$ 0.01		$ 0.01
Common stock equivalents excluded from EPS as the inclusion would be anti-dilutive (in Shares)		10,219,066		9,836,644	10,404,146	10,123,095
Impairment of unproved oil and gas properties					$ 11,794,000		$ 10,637,000	$ 30,906,000
Post-impairment charge				$ 86,000		$ 314,000
Remaining amount held in escrow deposit	$ 250,000				1,000,000
Purchase price of drilling ring			$ 5,600,000
Spare parts inventory			900,000
Purchase price charged to asset account			$ 4,600,000
Fixed short term escrow deposit		$ 1,000,000			1,000,000
Rental fees		1,500			$ 1,500
Useful life of drilling ring					10 years
Consumable inventory included in the rig purchase		$ 900,000			$ 900,000
Purchase and Sale Agreement [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Equipment and excess inventory										$ 5,600,000

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 11, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 29, 2020	Jun. 11, 2020	Dec. 31, 2019	Jan. 13, 2015
Stockholders' Equity (Details) [Line Items]
Common stock, par value		$ 0.01		$ 0.01			$ 0.01	$ 0.01
Net proceeds under the DSPP program		$ 13,015,000	$ 3,262,000	$ 25,517,000	$ 8,898,000
Per share price		$ 5		$ 5
ZNWAD Warrants [Member]
Stockholders' Equity (Details) [Line Items]
Expiration date, description				On September 15, 2020, the Company extended the termination date of the ZNWAD Warrant by two (2) years from the expiration date of May 2, 2021 to May 2, 2023.
Subscription Rights Offering [Member]
Stockholders' Equity (Details) [Line Items]
Subscription rights offering, description				On April 2, 2018 the Company announced an offering (“2018 Subscription Rights Offering”) through American Stock Transfer & Trust Company, LLC (the “Subscription Agent”), at no cost to the shareholders, of non-transferable Subscription Rights (each “Right” and collectively, the “Rights”) to purchase its securities to persons who owned shares of our Common Stock on April 13, 2018 (“the Record Date”). Pursuant to the 2018 Subscription Rights Offering, each holder of shares of common stock on the Record Date received non-transferable Subscription Rights, with each Right comprised of one share of the Company Common Stock, par value $0.01 per share (the “Common Stock”) and one Common Stock Purchase Warrant to purchase an additional one share of Common Stock. Each Right could be exercised or subscribed at a per Right subscription price of $5.00. Each Warrant affords the investor the opportunity to purchase one share of the Company Common Stock at a warrant exercise price of $3.00. The warrant is referred to as “ZNWAI.”
Proceeds from the sale of the rights				$ 3,038,000
Expenses from rights offering				$ 243,000
Minimum [Member]
Stockholders' Equity (Details) [Line Items]
Increase in shares authorized							200,000,000
Maximum [Member]
Stockholders' Equity (Details) [Line Items]
Increase in shares authorized							400,000,000
Dividend Reinvestment and Stock Purchase Plan [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				The ZNWAB warrants first became exercisable on May 2, 2016 and, in the case of ZNWAC on May 2, 2017 and in the case of ZNWAD on May 2, 2018, at a per share exercise price of $1.00.
Unit option, description				On November 1, 2016, the Company launched a unit offering (the “Unit Program”) under the Company’s DSPP pursuant to which participants could purchase units comprised of seven shares of Common Stock and seven Common Stock purchase warrants, at a per unit purchase price of $10.
Warrant [Member]
Stockholders' Equity (Details) [Line Items]
Exercise price per unit						$ 3
Warrants termination, description				The warrants became exercisable on June 29, 2018 and continue to be exercisable through June 29, 2020 at a per share exercise price of $3.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of June 29, 2019 to June 29, 2020.
Expiration date, description				The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional fifty (50) shares of Common Stock at a per share exercise price of $2.00. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants acquired under the Units purchased. For Plan participants who enrolled into the Unit Program with the purchase of at least one Unit and also enrolled in the separate Automatic Monthly Investments (“AMI”) program at a minimum of $50.00 per month or more, received an additional twenty-five (25) warrants at an exercise price of $2.00 during this Unit Option Program. The twenty-five (25) additional warrants were for enrolling into the AMI program. Existing subscribers to the AMI were entitled to the additional twenty-five (25) warrants once, if they purchased at least one (1) unit during the Unit program. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $2.00. The warrant is referred to as “ZNWAL.” The warrants became exercisable on August 26, 2019 and continue to be exercisable through August 26, 2021 at a per share exercise price of $2.00. On September 15, 2020, the Company extended the termination date of the ZNWAL Warrant by two (2) years from the expiration date of August 26, 2021 to August 26, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On December 9, 2019 Zion filed an Amendment No. 1 to the Registration Statement on Form S-1 (File No. 333-235299) solely for the purpose of re-filing a revised Exhibit 5.1 to the Registration Statement. This Amendment No. 1 does not modify any provision of the prospectus that forms a part of the Registration Statement and accordingly, such prospectus has not been included herein. For the three and nine months ended September 30, 2020, approximately $13,015,000, and $25,517,000 were raised under the DSPP program, respectively. For the three and nine months ended September 30, 2019, approximately $3,262,000, and $8,898,000 were raised under the DSPP program, respectively. The company raised approximately $1,753,000 from the period October 1, 2020 through November 11, 2020, under the DSPP program. The warrants represented by the company notation ZNWAA are tradeable on the OTCQX market under the symbol ZNOGW. However, all of the other warrants characterized above, in the table below, and throughout this Form 10-Q, are not tradeable and are used internally for classification and accounting purposes only. F. Subscription Rights Offering On April 2, 2018 the Company announced an offering (“2018 Subscription Rights Offering”) through American Stock Transfer & Trust Company, LLC (the “Subscription Agent”), at no cost to the shareholders, of non-transferable Subscription Rights (each “Right” and collectively, the “Rights”) to purchase its securities to persons who owned shares of our Common Stock on April 13, 2018 (“the Record Date”). Pursuant to the 2018 Subscription Rights Offering, each holder of shares of common stock on the Record Date received non-transferable Subscription Rights, with each Right comprised of one share of the Company Common Stock, par value $0.01 per share (the “Common Stock”) and one Common Stock Purchase Warrant to purchase an additional one share of Common Stock. Each Right could be exercised or subscribed at a per Right subscription price of $5.00. Each Warrant affords the investor the opportunity to purchase one share of the Company Common Stock at a warrant exercise price of $3.00. The warrant is referred to as “ZNWAI.”
Warrants exercise price		2		$ 2
Subscription rights offering, description				Each shareholder received .10 (one tenth) of a Subscription Right (i.e. one Subscription Right for each 10 shares owned) for each share of the Company’s Common Stock owned on the Record Date.
Warrant [Member] | ZNWAL Warrants [Member]
Stockholders' Equity (Details) [Line Items]
Net proceeds under the DSPP program				$ 10,000
Warrant [Member] | ZNWAD Warrants [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				On May 29, 2019, the Company extended the termination date of the ZNWAD Warrant by one (1) year from the expiration date of May 2, 2020 to May 2, 2021.
Warrant [Member] | ZNWAE Warrant [Member]
Stockholders' Equity (Details) [Line Items]
Expiration date, description				On May 29, 2019, the Company extended the termination date of the ZNWAE Warrant by one (1) year from the expiration date of May 1, 2020 to May 1, 2021.
Warrant [Member] | ZNWAI Warrnts [Member]
Stockholders' Equity (Details) [Line Items]
Expiration date, description				On May 29, 2019, the Company extended the termination date of the ZNWAI Warrant by one (1) year from the expiration date of June 29, 2020 to June 29, 2021.
Subsequent Event [Member]
Stockholders' Equity (Details) [Line Items]
Net proceeds under the DSPP program	$ 1,753,000
Senior Officer [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan				110,000
Exercise price per unit		0.01		$ 0.01
Fair value of stock options granted				$ 57,000	$ 35,000
Staff [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan				10,000	10,000
Exercise price per unit		0.01	$ 0.01	$ 0.01	$ 0.01
Fair value of stock options granted				$ 2,000	$ 3,000
One Senior Officer [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan					100,000
Exercise price per unit			0.01		$ 0.01
Shares purchased under option plan					25,000
Stock option plan, expiration date				The options vested upon grant and are exercisable through January 6, 2029.
Senior Officer One [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan					100,000
Exercise price per unit			0.01		$ 0.01
Fair value of stock options granted					$ 55,000
Senior Officer One [Member] | 2011 Non-Employee Directors Stock Option Plan [Member]
Stockholders' Equity (Details) [Line Items]
Stock option plan, expiration date				The options are exercisable through May 1, 2029. However, the vesting and exercisability of these options is subject to the following schedule: (a) 50,000 options vest on September 1, 2019 and (b) the remaining 50,000 options vest on January 1, 2020.
One Senior Officer [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Exercise price per unit			0.01		$ 0.01
One Senior Officers [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan					25,000
Fair value of stock options granted					$ 7,000
One Senior Officer [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Exercise price per unit			0.28		$ 0.28
10 Staff [Member] | 2011 Equity Incentive Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan					215,000
Exercise price per unit			0.01		$ 0.01
Fair value of stock options granted					$ 65,000
Board [Member] | 2011 Non-Employee Directors Stock Option Plan [Member]
Stockholders' Equity (Details) [Line Items]
Shares purchased under option plan					25,000
Exercise price per unit			$ 0.28		$ 0.28
Fair value of stock options granted					$ 7,000
Stock option plan, expiration date				The options vested upon grant and are exercisable through September 3, 2025.
New Unit Program [Member] | Warrant [Member]
Stockholders' Equity (Details) [Line Items]
Exercise price per unit		$ 1		$ 1					$ 1
Purchase warrants unit price									$ 4
Unit Option Program [Member] | ZNWAJ Warrants [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				The warrants became exercisable on October 29, 2018 and continued to be exercisable through October 29, 2020 at a per share exercise price of $1.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of October 29, 2019 to October 29, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAJ Warrant by one (1) year from the expiration date of October 29, 2020 to October 29, 2021.
New unit program, description				The New Unit Program consisted of a new combination of common stock and warrants, a new time period in which to purchase under the program, and a new unit price, but otherwise the same unit program features, conditions and terms in the Prospectus Supplement applied. The New Unit Program terminated on July 12, 2017. This New Unit Program enabled participants to purchase Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) the number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s Common Stock as reported on the NASDAQ on the unit purchase date and (ii) Common Stock purchase warrants to purchase an additional 25 shares of Common Stock at a warrant exercise price of $1.00 per share. The warrant is referred to as “ZNWAF.” All ZNWAF warrants became exercisable on August 14, 2017 and continued to be exercisable through August 14, 2020 at a per share exercise price of $1.00. On May 29, 2019, the Company extended the termination date of the ZNWAF Warrant by one (1) year from the expiration date of August 14, 2020 to August 14, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAF Warrant by two (2) years from the expiration date of August 14, 2021 to August 14, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share as the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company has the sole discretion to accelerate the termination date of the warrant upon providing 60 days advanced notice to the warrant holders. An Amendment No. 2 to the Prospectus Supplement (as described below) was filed on October 12, 2017. Under Amendment No. 2, the Company initiated another Unit Option Program which terminated on December 6, 2017. This Unit Option Program enabled participants to purchase Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) a certain number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s Common Stock as reported on the NASDAQ on the unit purchase date and (ii) Common Stock purchase warrants to purchase an additional 15 shares of Common Stock at a warrant exercise price of $1.00 per share. The warrant is referred to as “ZNWAG.” The warrants became exercisable on January 8, 2018 and continue to be exercisable through January 8, 2021 at a per share exercise price of $1.00. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share as the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company has the sole discretion to accelerate the termination date of the warrant upon providing 60 days advanced notice to the warrant holders. On February 1, 2018, the Company launched another Unit Option Program which terminated on February 28, 2018. The Unit Option consisted of Units of our securities where each Unit (priced at $250.00 each) was comprised of (i) 50 shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional 50 shares of Common Stock. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock acquired under the Units purchased. Each warrant affords the investor the opportunity to purchase one share of Company Common Stock at a warrant exercise price of $5.00. The warrant is referred to as “ZNWAH.” The warrants became exercisable on April 2, 2018 and continue to be exercisable through April 2, 2020 at a per share exercise price of $5.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of April 2, 2019 to April 2, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAH Warrant by one (1) year from the expiration date of April 2, 2020 to April 2, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAH Warrant by two (2) years from the expiration date of April 2, 2021 to April 2, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On August 21, 2018, the Company initiated another Unit Option Program, and it terminated on September 26, 2018. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) a certain number of shares of Common Stock determined by dividing $250.00 (the price of one Unit) by the average of the high and low sale prices of the Company’s publicly traded common stock as reported on the NASDAQ on the Unit Purchase Date and (ii) Common Stock purchase warrants to purchase an additional twenty-five (25) shares of Common Stock. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock acquired under the Units purchased. Each warrant affords the investor the opportunity to purchase one share of Company Common Stock at a warrant exercise price of $1.00. The warrant is referred to as “ZNWAJ.” The warrants became exercisable on October 29, 2018 and continued to be exercisable through October 29, 2020 at a per share exercise price of $1.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of October 29, 2019 to October 29, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAJ Warrant by one (1) year from the expiration date of October 29, 2020 to October 29, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAJ Warrant by two (2) years from the expiration date of October 29, 2021 to October 29, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On December 10, 2018, the Company initiated another Unit Option Program, and it terminated on January 23, 2019. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) is comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional two hundred and fifty (250) shares of Common Stock at a per share exercise price of $0.01. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants that are acquired under the Units purchased. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $0.01. The warrant is referred to as “ZNWAK.” The warrants became exercisable on February 25, 2019 and continued to be exercisable through February 25, 2020 at a per share exercise price of $0.01. On May 29, 2019, the Company extended the termination date of the ZNWAK Warrant by one (1) year from the expiration date of February 25, 2020 to February 25, 2021. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On September 15, 2020, the Company extended the termination date of the ZNWAK Warrant by two (2) years from the expiration date of February 25, 2021 to February 25, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On April 24, 2019, the Company’s most recent Unit Option Program began and it terminated on June 26, 2019, after the Company, on June 5, 2019, extended the termination date of the Unit Option Program. The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) was comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional fifty (50) shares of Common Stock at a per share exercise price of $2.00. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants acquired under the Units purchased. For Plan participants who enrolled into the Unit Program with the purchase of at least one Unit and also enrolled in the separate Automatic Monthly Investments (“AMI”) program at a minimum of $50.00 per month or more, received an additional twenty-five (25) warrants at an exercise price of $2.00 during this Unit Option Program. The twenty-five (25) additional warrants were for enrolling into the AMI program. Existing subscribers to the AMI were entitled to the additional twenty-five (25) warrants once, if they purchased at least one (1) unit during the Unit program. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $2.00. The warrant is referred to as “ZNWAL.” The warrants became exercisable on August 26, 2019 and continue to be exercisable through August 26, 2021 at a per share exercise price of $2.00. On September 15, 2020, the Company extended the termination date of the ZNWAL Warrant by two (2) years from the expiration date of August 26, 2021 to August 26, 2023. Zion considers this warrant as permanent equity per ASC 815-40-35-2. As such, there is no value assigned to this extension. On December 9, 2019 Zion filed an Amendment No. 1 to the Registration Statement on Form S-1 (File No. 333-235299) solely for the purpose of re-filing a revised Exhibit 5.1 to the Registration Statement. This Amendment No. 1 does not modify any provision of the prospectus that forms a part of the Registration Statement and accordingly, such prospectus has not been included herein. For the three and nine months ended September 30, 2020, approximately $13,015,000, and $25,517,000 were raised under the DSPP program, respectively. For the three and nine months ended September 30, 2019, approximately $3,262,000, and $8,898,000 were raised under the DSPP program, respectively. The company raised approximately $1,753,000 from the period October 1, 2020 through November 11, 2020, under the DSPP program. The warrants represented by the company notation ZNWAA are tradeable on the OTCQX market under the symbol ZNOGW. However, all of the other warrants characterized above, in the table below, and throughout this Form 10-Q, are not tradeable and are used internally for classification and accounting purposes only. F. Subscription Rights Offering On April 2, 2018 the Company announced an offering (“2018 Subscription Rights Offering”) through American Stock Transfer & Trust Company, LLC (the “Subscription Agent”), at no cost to the shareholders, of non-transferable Subscription Rights (each “Right” and collectively, the “Rights”) to purchase its securities to persons who owned shares of our Common Stock on April 13, 2018 (“the Record Date”). Pursuant to the 2018 Subscription Rights Offering, each holder of shares of common stock on the Record Date received non-transferable Subscription Rights, with each Right comprised of one share of the Company Common Stock, par value $0.01 per share (the “Common Stock”) and one Common Stock Purchase Warrant to purchase an additional one share of Common Stock. Each Right could be exercised or subscribed at a per Right subscription price of $5.00. Each Warrant affords the investor the opportunity to purchase one share of the Company Common Stock at a warrant exercise price of $3.00. The warrant is referred to as “ZNWAI.”
Unit Option Program [Member] | ZNWAG [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				The warrants became exercisable on January 8, 2018 and continue to be exercisable through January 8, 2021 at a per share exercise price of $1.00. The warrant terms provide that if the Company’s Common Stock trades above $5.00 per share as the closing price for 15 consecutive trading days at any time prior to the expiration date of the warrant, the Company has the sole discretion to accelerate the termination date of the warrant upon providing 60 days advanced notice to the warrant holders.
Unit Option Program [Member] | ZNWAH [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				The warrants became exercisable on April 2, 2018 and continue to be exercisable through April 2, 2020 at a per share exercise price of $5.00, after the Company, on December 4, 2018, extended the termination date of the Warrant by one (1) year from the expiration date of April 2, 2019 to April 2, 2020. On May 29, 2019, the Company extended the termination date of the ZNWAH Warrant by one (1) year from the expiration date of April 2, 2020 to April 2, 2021.
Unit Option Program [Member] | ZNWAK [Member]
Stockholders' Equity (Details) [Line Items]
Warrants termination, description				The Unit Option Program consisted of Units of the Company’s securities where each Unit (priced at $250.00 each) is comprised of (i) two hundred and fifty (250) shares of Common Stock and (ii) Common Stock purchase warrants to purchase an additional two hundred and fifty (250) shares of Common Stock at a per share exercise price of $0.01. The investor’s Plan account was credited with the number of shares of the Company’s Common Stock and Warrants that are acquired under the Units purchased. Each warrant affords the participant the opportunity to purchase one share of our Common Stock at a warrant exercise price of $0.01.
Expiration date, description				The warrants became exercisable on February 25, 2019 and continued to be exercisable through February 25, 2020 at a per share exercise price of $0.01. On May 29, 2019, the Company extended the termination date of the ZNWAK Warrant by one (1) year from the expiration date of February 25, 2020 to February 25, 2021.

Stockholders' Equity (Details)

Stockholders' Equity (Details) - Schedule of stock option transactions - Employee Stock [Member] - $ / shares	9 Months Ended
	Sep. 30, 2020
Stockholders' Equity (Details) - Schedule of stock option transactions [Line Items]
Outstanding, December 31, 2019	5,195,250
Outstanding, December 31, 2019	$ 1.12
Granted to employees, officers, directors and others	120,000
Granted to employees, officers, directors and others	$ 0.01
Expired/Cancelled/Forfeited	(605,000)
Expired/Cancelled/Forfeited	$ 1.77
Exercised	(652,500)
Exercised	$ 0.01
Outstanding, September 30, 2020	4,057,750
Outstanding, September 30, 2020	$ 1.17
Exercisable, September 30, 2020	4,057,750
Exercisable, September 30, 2020	$ 1.17

Stockholders' Equity (Details_2

Stockholders' Equity (Details) - Schedule of stock options outstanding	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number outstanding (in Shares) | shares	4,057,750
Weighted Average Exercise price	$ 1.17
Vested [Member] | Minimum [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	0.01
Vested [Member] | Maximum [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	4.15
Ranges Two [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Two [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	10,000
Weighted average remaining contractual life (years)	3 years 43 days
Weighted Average Exercise price	$ 0.01
Ranges Three [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Three [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	5,000
Weighted average remaining contractual life (years)	3 years 255 days
Weighted Average Exercise price	$ 0.01
Ranges Four [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Four [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	20,000
Weighted average remaining contractual life (years)	5 years 244 days
Weighted Average Exercise price	$ 0.01
Ranges Five [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Five [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	130,000
Weighted average remaining contractual life (years)	6 years 3 months
Weighted Average Exercise price	$ 0.01
Ranges Six [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Six [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	60,000
Weighted average remaining contractual life (years)	6 years 197 days
Weighted Average Exercise price	$ 0.01
Ranges Seven [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Seven [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	40,000
Weighted average remaining contractual life (years)	7 years
Weighted Average Exercise price	$ 0.01
Ranges Eight [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Eight [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	97,500
Weighted average remaining contractual life (years)	7 years 3 months
Weighted Average Exercise price	$ 0.01
Ranges Nine [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Nine [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	7 years 94 days
Weighted Average Exercise price	$ 0.01
Ranges Ten [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Ten [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	30,000
Weighted average remaining contractual life (years)	7 years 149 days
Weighted Average Exercise price	$ 0.01
Ranges Eleven [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Eleven [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	6,000
Weighted average remaining contractual life (years)	7 years 186 days
Weighted Average Exercise price	$ 0.01
Ranges Twelve [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twelve [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	8 years 94 days
Weighted Average Exercise price	$ 0.01
Ranges Thirteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	50,000
Weighted average remaining contractual life (years)	8 years 211 days
Weighted Average Exercise price	$ 0.01
Ranges Fourteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Fourteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	10
Weighted average remaining contractual life (years)	8 years 335 days
Weighted Average Exercise price	$ 0.01
Ranges Fifteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Fifteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	125,000
Weighted average remaining contractual life (years)	8 years 350 days
Weighted Average Exercise price	$ 0.01
Ranges Sixteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Sixteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	370,000
Weighted average remaining contractual life (years)	9 years 47 days
Weighted Average Exercise price	$ 0.01
Ranges Seventeen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Seventeen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	60,000
Weighted average remaining contractual life (years)	9 years 94 days
Weighted Average Exercise price	$ 0.01
Ranges Eighteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Eighteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.01
Number outstanding (in Shares) | shares	10,000
Weighted average remaining contractual life (years)	9 years 335 days
Weighted Average Exercise price	$ 0.01
Ranges Nineteen [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Nineteen [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.16
Number outstanding (in Shares) | shares	340,000
Weighted average remaining contractual life (years)	5 years 69 days
Weighted Average Exercise price	$ 0.16
Ranges Twenty [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.16
Number outstanding (in Shares) | shares	150,000
Weighted average remaining contractual life (years)	9 years 69 days
Weighted Average Exercise price	$ 0.16
Ranges Twenty One [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty One [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.18
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	5 years 62 days
Weighted Average Exercise price	$ 0.18
Ranges Twenty Two [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Two [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.28
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	4 years 335 days
Weighted Average Exercise price	$ 0.28
Ranges Twenty Three [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Three [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 0.28
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	8 years 335 days
Weighted Average Exercise price	$ 0.28
Ranges Twenty Four [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Four [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.33
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	2 years 208 days
Weighted Average Exercise price	$ 1.33
Ranges Twenty Five [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Five [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.38
Number outstanding (in Shares) | shares	108,000
Weighted average remaining contractual life (years)	94 days
Weighted Average Exercise price	$ 1.38
Ranges Twenty Six [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Six [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.38
Number outstanding (in Shares) | shares	105,307
Weighted average remaining contractual life (years)	4 years 94 days
Weighted Average Exercise price	$ 1.38
Ranges Twenty Seven [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Seven [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.55
Number outstanding (in Shares) | shares	250,000
Weighted average remaining contractual life (years)	1 year 248 days
Weighted Average Exercise price	$ 1.55
Ranges Twenty Eight [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Eight [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.67
Number outstanding (in Shares) | shares	260,000
Weighted average remaining contractual life (years)	3 days
Weighted Average Exercise price	$ 1.67
Ranges Twenty Nine [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Twenty Nine [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.67
Number outstanding (in Shares) | shares	405,943
Weighted average remaining contractual life (years)	4 years 3 days
Weighted Average Exercise price	$ 1.67
Ranges Thirty [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.70
Number outstanding (in Shares) | shares	218,500
Weighted average remaining contractual life (years)	2 years 80 days
Weighted Average Exercise price	$ 1.70
Ranges Thirty One [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty One [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.75
Number outstanding (in Shares) | shares	250,000
Weighted average remaining contractual life (years)	2 years 277 days
Weighted Average Exercise price	$ 1.75
Ranges Thirty Two [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty Two [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 1.78
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	3 years 339 days
Weighted Average Exercise price	$ 1.78
Ranges Thirty Three [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty Three [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 2.03
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	211 days
Weighted Average Exercise price	$ 2.03
Ranges Thirty Four [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty Four [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 2.31
Number outstanding (in Shares) | shares	250,000
Weighted average remaining contractual life (years)	3 years 3 months
Weighted Average Exercise price	$ 2.31
Ranges Thirty Five [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty Five [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 2.61
Number outstanding (in Shares) | shares	471,500
Weighted average remaining contractual life (years)	1 year 65 days
Weighted Average Exercise price	$ 2.61
Ranges Thirty Six [Member] | Non-vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price
Number outstanding (in Shares) | shares
Weighted average remaining contractual life (years)
Weighted Average Exercise price
Ranges Thirty Six [Member] | Vested [Member]
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price	$ 4.15
Number outstanding (in Shares) | shares	25,000
Weighted average remaining contractual life (years)	3 years 277 days
Weighted Average Exercise price	$ 4.15

Stockholders' Equity (Details_3

Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model - Employee [Member] - $ / shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model [Line Items]
Weighted-average fair value of underlying stock at grant date (in Dollars per share)	$ 0.50	$ 0.37
Dividend yields
Expected lives (in years)	5 years
Weighted-average grant date fair value (in Dollars per share)	$ 0.49	$ 0.36
Minimum [Member]
Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model [Line Items]
Expected volatility	90.00%	87.00%
Risk-free interest rates	0.26%	1.35%
Expected lives (in years)		3 years
Maximum [Member]
Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model [Line Items]
Expected volatility	103.00%	110.00%
Risk-free interest rates	1.61%	2.53%
Expected lives (in years)		5 years 124 days

Stockholders' Equity (Details_4

Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model - Non-employees [Member] - $ / shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Stockholders' Equity (Details) - Schedule of assumptions used to estimate fair value of warrants granted using black-scholes option pricing model [Line Items]
Weighted-average fair value of underlying stock at grant date (in Dollars per share)		$ 0.31
Dividend yields
Expected volatility		81.00%
Risk-free interest rates		1.80%
Expected lives (in years)		10 years
Weighted-average grant date fair value (in Dollars per share)		$ 0.30

Stockholders' Equity (Details_5

Stockholders' Equity (Details) - Schedule of compensation cost of warrant and option issuances - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Employees And Directors [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation cost of warrant and option issuances	$ 3	$ 134	$ 59	$ 174

Stockholders' Equity (Details_6

Stockholders' Equity (Details) - Schedule of compensation cost of warrant and option issuances - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Non-employees [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation cost of warrant and option issuances		$ 3		$ 3

Stockholders' Equity (Details_7

Stockholders' Equity (Details) - Schedule of compensation cost of warrant and option issuances - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Employees And Non Employees [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Compensation cost of warrant and option issuances

Stockholders' Equity (Details_8

Stockholders' Equity (Details) - Schedule of warrants description	9 Months Ended
	Sep. 30, 2020$ / sharesshares
Class of Warrant or Right [Line Items]
Outstanding warrants, Beginning Balance	7,022,070
Warrants Issued
Warrants Exercised	(18,121)
Warrants Expired
Outstanding warrants, Ending Balance	7,003,949
Znwaa Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 2
Warrant Termination Date	Jan. 31, 2023
Outstanding warrants, Beginning Balance	1,498,804
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	1,498,804
Znwad Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1
Warrant Termination Date	May 2, 2023
Outstanding warrants, Beginning Balance	243,853
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	243,853
Znwae Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1
Warrant Termination Date	May 2, 2023
Outstanding warrants, Beginning Balance	2,144,470
Warrants Issued
Warrants Exercised	(371)
Warrants Expired
Outstanding warrants, Ending Balance	2,144,099
Znwaf [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1
Warrant Termination Date	Aug. 14, 2023
Outstanding warrants, Beginning Balance	359,585
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	359,585
Znwag [Member | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1
Warrant Termination Date	Jan. 8, 2023
Outstanding warrants, Beginning Balance	240,578
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	240,578
Znwah [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 5
Warrant Termination Date	Apr. 19, 2023
Outstanding warrants, Beginning Balance	372,400
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	372,400
Znwai Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 3
Warrant Termination Date	Jun. 29, 2023
Outstanding warrants, Beginning Balance	640,730
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	640,730
Znwaj Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 1
Warrant Termination Date	Oct. 29, 2023
Outstanding warrants, Beginning Balance	546,000
Warrants Issued
Warrants Exercised
Warrants Expired
Outstanding warrants, Ending Balance	546,000
Znwak Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 0.01
Warrant Termination Date	Feb. 25, 2023
Outstanding warrants, Beginning Balance	457,725
Warrants Issued
Warrants Exercised	(17,700)
Warrants Expired
Outstanding warrants, Ending Balance	440,025
Znwal Warrants [Member] | Warrant Transactions [Member]
Class of Warrant or Right [Line Items]
Exercise Price (in Dollars per share) | $ / shares	$ 2
Warrant Termination Date	Aug. 26, 2023
Outstanding warrants, Beginning Balance	517,925
Warrants Issued
Warrants Exercised	(50)
Warrants Expired
Outstanding warrants, Ending Balance	517,875

Stockholders' Equity (Details_9

Stockholders' Equity (Details) - Schedule of warrants description - Investor [Member]	9 Months Ended
	Sep. 30, 2020
Znwaa Warrants [Member]
Class of Warrant or Right [Line Items]
Name	B ,C
Period of Grant	March 2013 - December 2014
Expiration Date	January 31, 2023
Exercise Price	March 2013 - December 2014
Znwad Warrants [Member]
Class of Warrant or Right [Line Items]
Name	A,B,C
Period of Grant	January 2015 - March 2016
Expiration Date	May 02, 2023
Exercise Price	January 2015 - March 2016
Znwae Warrants [Member]
Class of Warrant or Right [Line Items]
Name	B,C
Period of Grant	November 2016 - March 2017
Expiration Date	May 01, 2023
Exercise Price	November 2016 - March 2017
Znwaf Warrants [Member]
Class of Warrant or Right [Line Items]
Name	A,B,C
Period of Grant	May 2017 - July 2017
Expiration Date	August 14, 2023
Exercise Price	May 2017 - July 2017
Znwag Warrants [Member]
Class of Warrant or Right [Line Items]
Name	C
Period of Grant	October 2017 - December 2017
Expiration Date	January 08, 2023
Exercise Price	October 2017 - December 2017
Znwah Warrants [Member]
Class of Warrant or Right [Line Items]
Name	A,B,C
Period of Grant	February 2018
Expiration Date	April 2, 2023
Exercise Price	February 2018
Znwai Warrants [Member]
Class of Warrant or Right [Line Items]
Name	A,B,C
Period of Grant	April 2018 - May 2018
Expiration Date	June 29, 2023
Exercise Price	April 2018 - May 2018
Znwaj Warrants [Member]
Class of Warrant or Right [Line Items]
Name	B,C
Period of Grant	August 2018 - September 2018
Expiration Date	October 29, 2023
Exercise Price	August 2018 - September 2018
Znwak Warrants [Member]
Class of Warrant or Right [Line Items]
Name	B,C
Period of Grant	December 2018 - January 2019
Expiration Date	February 25, 2023
Exercise Price	December 2018 - January 2019
Znwal Warrants [Member]
Class of Warrant or Right [Line Items]
Name	C
Period of Grant	July 2019 - August 2019
Expiration Date	August 26, 2023
Exercise Price	July 2019 - August 2019

Unproved Oil and Gas Properti_3

Unproved Oil and Gas Properties, Full Cost Method (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Oil and Gas Property [Abstract]
Inclusive of non-cash amounts	$ 154,000	$ 891,000	$ 293,000	$ 1,065,000

Unproved Oil and Gas Properti_4

Unproved Oil and Gas Properties, Full Cost Method (Details) - Schedule of changes in unproved oil and gas properties - USD ($) $ in Thousands	3 Months Ended			9 Months Ended				12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019		Sep. 30, 2020		Sep. 30, 2019		Dec. 31, 2019
Unproved Oil and Gas Properties, Full Cost Method (Details) - Schedule of changes in unproved oil and gas properties [Line Items]
Drilling costs, and other operational related costs				$ 1,390				$ 1,227
Capitalized salary costs				1,912				1,759
Capitalized interest costs				1,100				990
Legal and seismic costs, license fees and other preparation costs				7,352				6,636
Other costs				40				25
Total unproved oil and gas properties, full cost method				11,794				$ 10,637
Oil and Gas Properties [Member]
Unproved Oil and Gas Properties, Full Cost Method (Details) - Schedule of changes in unproved oil and gas properties [Line Items]
Drilling costs, and other operational related costs	$ 79	$ 4		163		$ 5
Capitalized salary costs	56	47		153		136
Capitalized interest costs	51	143		110		181
Legal and seismic costs, license fees and other preparation costs	318	1,387		716		1,655
Other costs	4	7		15		18
Total unproved oil and gas properties, full cost method	$ 508		[1]		[2]		[2]
[1]	Inclusive of non-cash amounts of approximately $154,000, and $891,000 during the three months ended September 30, 2020, and 2019, respectively
[2]	Inclusive of non-cash amounts of approximately $293,000, and $1,065,000 during the nine months ended September 30, 2020, and 2019, respectively

Unproved Oil and Gas Properti_5

Unproved Oil and Gas Properties, Full Cost Method (Details) - Schedule of changes in unproved oil and gas properties, full cost method - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule of changes in unproved oil and gas properties, full cost method [Abstract]
Drilling costs, and other operational related costs		$ 85		$ 244
Other costs		1		70
Changes in unproved oil and gas properties		$ 86		$ 314

Senior Convertible Bonds (Detai

Senior Convertible Bonds (Details)	May 02, 2016USD ($)	Sep. 30, 2020USD ($)$ / sharesshares	Sep. 30, 2019USD ($)$ / sharesshares	Sep. 30, 2020USD ($)$ / sharesshares	Sep. 30, 2019USD ($)$ / sharesshares	Dec. 31, 2019USD ($)	May 03, 2018
Senior Convertible Bonds (Details) [Line Items]
Principal amount		$ 3,246,700		$ 3,246,700		$ 3,249,500
Debt discount on derivative liability		1,626,000		1,626,000
Interest expense		31,000	$ 0	$ 132,000	$ 49,000
Convertible Debt [Member]
Senior Convertible Bonds (Details) [Line Items]
Debt conversion, description				At any time prior to the close of business on the business day immediately preceding April 2, 2021, holders may convert their notes into Common Stock at the conversion rate of 44 shares per $100 bond (which is equivalent to a conversion rate of approximately $2.27 per share).
Principal amount		3,470,000		$ 3,470,000
Convertible bonds				1,844,000
Amortization expense		7,000	7,000	20,000	20,000
Amortization expense		97,000	72,000	314,000	259,000
Financing costs associated notes converted to shares		$ 0	$ (1,000)	$ 3,000	$ 11,000
Debt instrument payment description				The Notes are senior unsecured obligations of the Company and bear interest at a rate of 10% per year, payable annually in arrears on May 2 of each year, commencing May 2, 2017.
Senior unsecured notes interest rate		10.00%		10.00%
Debt Issue [Member] | Convertible Debt [Member]
Senior Convertible Bonds (Details) [Line Items]
Debt instrument payment description				the Company paid its annual 10% interest to its bondholders of record on April 20, 2020. The interest was paid-in-kind (“PIK”) in the form of Common Stock. An average of the Company stock price of $0.182 was determined based on the 30 trading days prior to the record date of April 20, 2020. This figure was used to divide into 10% of the par value of the bonds held by the holders.
Average Company stock price (in Dollars per share) | $ / shares		$ 0.182		$ 0.182
Stock issued to bondholders (in Shares) | shares				1,781,504
IPO [Member]
Senior Convertible Bonds (Details) [Line Items]
Debt conversion, description				Under the rights offering, the Company distributed at no cost, 360,000 non-transferable subscription rights to subscribe for, on a per right basis, two 10% Convertible Senior Bonds par $100 due May 2, 2021 (the “Notes”), to shareholders of the Company’s Common Stock on October 15, 2015, the record date for the offering. Each whole subscription right entitled the participant to purchase two convertible bonds at a purchase price of $100 per bond.
Principal amount	$ 3,470,000
Net proceeds from sale of the Notes	3,334,000
Expenses from rights offering	$ 136,000
IPO [Member] | Convertible Debt [Member]
Senior Convertible Bonds (Details) [Line Items]
Debt instrument payment description				The number of shares for the payment of principal, in lieu of the cash amount, shall be based upon the average of the closing price of the Company’s Common Stock as reported by Bloomberg L.P. for the 30 trading days preceding the principal repayment date; such record date has been designated as the trading day immediately prior to the 30-day period preceding the maturity date of May 2, 2021.
Senior unsecured notes interest rate							10.00%
IPO [Member] | Debt Issue [Member] | Convertible Debt [Member]
Senior Convertible Bonds (Details) [Line Items]
Number of convertible bonds		0	16	28	138
Convertible bond price		$ 100	$ 100	$ 100	$ 100
Convertible bonds purchase price (in Dollars per share) | $ / shares		$ 2.27	$ 2.27	$ 2.27	$ 2.27
Common stock issued (in Shares) | shares		0	704	1,232	6,072
Financial expenses		$ 0	$ 1,000	$ 3,000	$ 11,000
Interest expense		$ 51,000	$ 143,000	$ 110,000	$ 181,000

Senior Convertible Bonds (Det_2

Senior Convertible Bonds (Details) - Schedule of senior convertible bonds - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of senior convertible bonds [Abstract]
10% Senior Convertible Bonds, on the day of issuance	$ 3,470	$ 3,470
Unamortized Debt discount, net	(325)	(639)
Bonds converted to shares	(223)	(221)
Offering cost, net	(16)	(36)
10% senior Convertible bonds – Long Term Liability	$ 2,906	$ 2,574

Derivative Liability (Details)

Derivative Liability (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Unrealized gains (losses) on derivative liability	$ 49,000	$ 90,000	$ (2,000)	$ 172,000

Derivative Liability (Details)

Derivative Liability (Details) - Schedule of fair value of derivative liabilities - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivative Liability (Details) - Schedule of fair value of derivative liabilities [Line Items]
Fair value of derivative liability	$ 131	$ 129
Fair Value, Inputs, Level 3 [Member]
Derivative Liability (Details) - Schedule of fair value of derivative liabilities [Line Items]
Fair value of derivative liability	$ 131	$ 129

Derivative Liability (Details_2

Derivative Liability (Details) - Schedule of change in fair value of derivative liability $ in Thousands	9 Months Ended
	Sep. 30, 2020USD ($)
Schedule of change in fair value of derivative liability [Abstract]
Derivative liability fair value, beginning balance	$ 129
Loss on derivative liability	2
Derivative liability fair value, ending balance	$ 131

Derivative Liability (Details_3

Derivative Liability (Details) - Schedule of assumption used for the model of derivatives liabilities - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Schedule of assumption used for the model of derivatives liabilities [Abstract]
Convertible Option Fair Value of approximately (in Dollars)	$ 131,000	$ 129,000
Annual Risk-free Rate	0.11%	1.59%
Volatility	145.85%	121.68%
Expected Term (years)	215 days	1 year 124 days
Convertible Notes Face Value (in Dollars)	$ 3,246,700	$ 3,249,500
Expected annual yield on Regular Notes	28.77%	28.77%
Price of the Underlying Stock (in Dollars per share)	$ 0.23	$ 0.17

Right of Use Leases Assets an_3

Right of Use Leases Assets and Leases Obligations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Right of Use Leases Assets and Leases Obligations [Abstract]
Operating lease costs	$ 61,000	$ 64,000	$ 183,000	$ 196,000
Operating lease liabilities	69,000	69,000	203,000	208,000
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 0	$ 0	$ 0	$ 819,000

Right of Use Leases Assets an_4

Right of Use Leases Assets and Leases Obligations (Details) - Schedule of operating lease assets and liabilities - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule of operating lease assets and liabilities [Abstract]
Operating lease assets	$ 476	$ 634
Current operating lease liabilities	207	239
Non-current operating lease liabilities	307	450
Total operating lease liabilities	$ 514	$ 689

Right of Use Leases Assets an_5

Right of Use Leases Assets and Leases Obligations (Details) - Schedule of weighted average remaining lease term and weighted average discount rate for operating leases	Sep. 30, 2020
Schedule of weighted average remaining lease term and weighted average discount rate for operating leases [Abstract]
Weighted average remaining lease term (years)	2 years 328 days
Weighted average discount rate	6.00%

Right of Use Leases Assets an_6

Right of Use Leases Assets and Leases Obligations (Details) - Schedule of future minimum lease payments under non-cancellable operating leases $ in Thousands	Sep. 30, 2020USD ($)
Schedule of future minimum lease payments under non-cancellable operating leases [Abstract]
October 1, 2020 through December 31, 2020	$ 229
2021	141
2022	141
2023	47
2024
Thereafter
Total undiscounted future minimum lease payments	558
Less: portion representing imputed interest	(44)
Total undiscounted future minimum lease payments	$ 514

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($)	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	May 31, 2020	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2018	Jul. 18, 2019
Commitments and Contingencies Disclosure [Abstract]
Advance deposit				$ 500,000
Legal claims	$ 142,000
Guarantee amount		$ 1,058,000	$ 1,058,000		$ 500,000
Commitments description			Furthermore, prior to drilling, an onshore license holder is required to deposit an additional bank guarantee in the amount as determined by the Petroleum Commissioner in accordance with the characteristics of the drilling and the drilling plan but no less than $250,000.
Bank guarantees to government bodies		83,000	$ 83,000
Bank guarantees to others		1,141,000	1,141,000
Amount paid to escrow agent with respect to the purchase of drilling rig			$ 1,000,000
Foreign currency exchange rate risks, description			During the period January 1, 2020 through September 30, 2020, the USD has fluctuated by approximately 0.4% against the NIS (the USD has weakened relative to the NIS). Also, during the period January 1, 2019 through December 31, 2019, the USD fluctuated by approximately 7.8% against the NIS (the USD weakened relative to the NIS). Continued weakening of the US dollar against the NIS will result in higher operating costs from NIS denominated expenses. To date, we have not hedged any of our currency exchange rate risks, but we may do so in the future.
Cash equivalents and short-term bank deposits		$ 20,779,000	$ 20,779,000
Weighted average annual interest rate		35.00%	43.00%

Subsequent Events (Details)

Subsequent Events (Details)	1 Months Ended
	Nov. 11, 2020USD ($)
Subsequent Event [Member]
Subsequent Events (Details) [Line Items]
Amount collected from DSPP program	$ 1,753,000