Organization and basis of presentation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 08, 2015	Sep. 03, 2015	Aug. 28, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Description of Terminated Asset Purchase Agreement		The RO Agreement provided for the sale of the DraftDay Business to RO for a purchase price of $4,000 plus stock and warrants of RO.
Description of Asset Purchase Agreement	In exchange for the DraftDay Business, Viggle paid MGT Sports the following: (a) 1,269,342 shares of Viggles common stock, par value $0.001 per share, (b) a promissory note in the amount of $234 due September 29, 2015 (the September 2015 Note), (c) a promissory note in the amount of $1,875 due March 8, 2016 (the March 2016 Note), and (d) 2,550,000 shares of common stock of DDGG. In addition, in exchange for providing certain transitional services, DDGG issued to MGT Sports a warrant to purchase 1,500,000 shares of DDGG common stock at an exercise price of $0.40 per share. Following consummation of the transactions of the Asset Purchase Agreement, including certain agreements between Viggle and third parties, MGT Sports owns 2,550,000 shares of DDGG common stock, Viggle owns 11,250,000 shares of DDGG common stock, and Sportech, Inc. own 9,000,000 shares of DDGG common stock.					In exchange for the DraftDay Business, Viggle paid MGT Sports the following: (a) 1,269,342 shares of Viggles common stock, par value $0.001 per share, (b) a promissory note in the amount of $234 due September 29, 2015 (the September 2015 Note), (c) a promissory note in the amount of $1,875 due March 8, 2016 (the March 2016 Note), and (d) 2,550,000 shares of common stock of DDGG.
Shares Issued, Price Per Share	$ 0.40
Gain (Loss) on Disposition of Assets, Total				$ (144)	$ 0	$ (144)	$ 0
License and Services Revenue				$ 90	$ 1	$ 102	$ 81
Gioia Systems, LLC [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Cash Payment In Transfer of ship Interest			$ 35
MGT Interactive [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Gain (Loss) on Disposition of Assets, Total			$ 144
MGT Sports, Inc [Member] | Series A Preferred Stock [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Asset Purchase Agreement, Description of Stock Transaction						Holders may convert the preferred stock into 6.25% of MGT Sports issued and outstanding common stock at any time and shall not be entitled to voting rights. MGT Sports may redeem the preferred stock at 100% of the stated value, and holders may redeem the preferred stock at 100% of the stated value following closing of the RO Agreement.
Viggle, Inc [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Fair Market Value Price Per Share						$ 0.40
DraftDay Gaming Group, Inc [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Class of Warrant or Right, Exercise Price of Warrants or Rights				$ 0.40		0.40
Share Price				$ 0.40		$ 0.40
Fair Value Assumptions, Risk Free Interest Rate						0.65%
Fair Value Assumptions, Expected Volatility Rate						98.00%
Gain (Loss) on Disposition of Assets, Total						$ 387
Closing Share Price Per Share						$ 1.30