CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Cash and cash equivalents	$ 2,678	$ 3,443
Accounts receivable	0	9
Prepaid expenses and other current assets	233	340
Total current assets	2,911	3,792
Non-current assets:
Restricted cash	2,039	2,039
Property and equipment, net	21	25
Intangible assets, net	1,743	1,795
Total assets	6,714	7,651
Liabilities
Accounts payable	203	242
Accrued expenses	177	272
Other payables	21	67
Total current liabilities	401	581
Non-current liabilities:
Derivative liability - warrants	5,044	7,166
Total liabilities	5,445	7,747
Commitments and contingencies
Stockholders' equity/(deficit)
Preferred Stock, Value		0
Common stock, $0.001 par value; 75,000,000 shares authorized; 3,522,935 and 3,251,187 shares issued and outstanding at March 31, 2013, and December 2012 respectively	4	3
Additional paid in capital	283,296	282,998
Accumulated other comprehensive loss	(281)	(281)
Accumulated deficit	(282,570)	(283,631)
Total stockholders' (deficit)/equity - MGT Capital Investments, Inc.	449	(911)
Non-controlling interests	712	768
Total equity	1,161	(143)
Total stockholders' equity/(deficit), liabilities and non-controlling interest	6,714	7,651
Series A Convertible Preferred Stock [Member]
Stockholders' equity/(deficit)
Preferred Stock, Value	108	47
Undesignated Preferred Stock [Member]
Stockholders' equity/(deficit)
Preferred Stock, Value	$ 0	$ 0