Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 9,519	$ 345
Prepaid expenses and other current assets	894	153
Investments available for sale		44
Digital currencies	48	10
Total current assets	10,461	552
Non-current assets:
Property and equipment, net	3,116	602
Intangible assets, net		468
Investments, at cost		287
Total assets	13,577	1,908
Current liabilities:
Accounts payable	287	66
Accrued expenses	707	124
Other payables	710	1
Total current liabilities	1,704	191
Non-current liabilities:
Convertible notes payable, net of discount		2,300
Total liabilities	1,704	2,491
Commitments and Contingencies
Stockholders’ Equity (Deficit)
Common stock, $0.001 par value; 125,000,000 shares authorized; 58,963,009 and 28,722,855 shares issued and outstanding at December 31, 2017 and 2016, respectively.	59	29
Additional paid-in capital	390,736	327,943
Accumulated other comprehensive loss		(66)
Accumulated deficit	(378,900)	(328,467)
Total equity (deficit) attributable to MGT stockholders	11,895	(561)
Non-controlling interest	(22)	(22)
Total stockholders’ equity (deficit)	11,873	(583)
Total liabilities, stockholders’ equity (deficit), redeemable convertible preferred stock and non-controlling interest	13,577	1,908
Series A Convertible Preferred Stock [Member]
Redeemable convertible preferred stock - Temporary equity
Preferred stock, Series A Convertible Preferred, $0.001 par value, 1,500,000 shares authorized at December 31, 2017 and 2016. 1,416,160 shares issued and held in treasury as of December 31, 2017 and 2016. No shares outstanding at December 31, 2016 and 2017.
Undesignated Preferred Stock [Member]
Stockholders’ Equity (Deficit)
Undesignated preferred stock, $0.001 par value, 8,500,000 shares authorized at December 2017 and 2016. No shares issued or outstanding at December 31, 2017 and 2016