Description on Cryptocurrency mining.

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Organization Consolidation And Presentation Of Financial Statements Disclosure LineItems.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Aggregate revenue from the sale of minerals and related products, and from rendering services such as exploration, development, mining, processing and providing mining support activities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Organization and Basis of Presentation (Details Narrative) - USD ($) $ in Thousands				3 Months Ended
	Mar. 23, 2018	Mar. 19, 2018	Mar. 16, 2018	Mar. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Common stock, shares authorized				125,000,000	125,000,000
Common stock reverse split	The Company’s stockholders approved a 1-for-2 reverse split of the Company’s common stock, to be effected only if needed for the Company’s application to uplist its common stock to a national exchange.
Description on Cryptocurrency mining				The Company mined 91.5 Bitcoin
Revenue on mining				$ 1,003
Sale of asset in consideration		$ 60	$ 60	$ 60
Conversion convertible interest percentage		20.00%
Quincy [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Description on Cryptocurrency mining				MGT owned and operated approximately 500 miners located in a leased facility in Quincy, Washington and 4,200 miners located in a leased facility in Sweden. In addition, the Company operates about 2,100 miners in the Sweden location pursuant to management agreements. All miners owned or managed by MGT are S9 Antminers sold by Bitmain Technologies LTD. At full deployment expected in May 2018, our total Bitcoin mining capacity, as measured by computational hashing rate, will be approximately 90 petahash per second (“PH/s”). In addition to the S9 Antminers, the Company owns 50 custom designed GPU-based Ethereum mining rigs.
Promissory Note [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Sale of asset in consideration		$ 956	$ 1,000
Conversion convertible interest percentage			20.00%
Minimum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Common stock, shares authorized	75,000,000
Maximum [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Common stock, shares authorized	125,000,000