CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 1,455	$ 4,642
Accounts receivable	5	43
Prepaid expenses and other current assets	172	132
Total current assets	1,632	4,817
Non-current assets:
Restricted cash	138	140
Property and equipment, at cost, net	43	45
Intangible assets, net	2,417	2,423
Goodwill	6,444	6,444
Other non-current assets	2	4
Total assets	10,676	13,873
Current liabilities:
Accounts payable	245	228
Accrued expenses	180	94
Player deposit liability	952	647
Other payables	2	16
Total current liabilities	1,379	985
Commitments and contingencies:
Stockholders' equity:
Common stock, $0.001 par value; 75,000,000 shares authorized; 10,731,160 and 8,848,686 shares issued and outstanding at December 31, 2014 and December 31, 2013, respectively	11	9
Additional paid-in capital	308,288	304,886
Accumulated other comprehensive loss	(281)	(281)
Accumulated deficit	(299,163)	(293,833)
Total stockholders' equity attributable to MGT Capital Investments, Inc.	8,855	10,781
Non-controlling interests	442	2,107
Total stockholders’ equity	9,297	12,888
Total liabilities, redeemable convertible preferred stock and stockholders' equity	10,676	13,873
Series A Convertible Preferred Stock [Member]
Redeemable convertible preferred stock - Temporary equity:
Preferred stock, series A convertible preferred, $0.001 par value; 1,416,160 and 1,416,160 shares authorized at December 31, 2014 and December 31, 2013, respectively; 9,993 and 9,413 shares issued and outstanding at December 31, 2014 and December 31, 2013, respectively	0	0
Undesignated Preferred Stock [Member]
Stockholders' equity:
Undesignated Preferred stock, $0.001 par value; 8,583,840 and 8,583,840 shares authorized at December 31, 2014 and 2013, respectively. No shares authorized, issued and outstanding at December 31, 2014 and December 31, 2013 respectively	$ 0	$ 0