Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 323	$ 345
Prepaid expenses and other current assets	246	153
Investments available for sale		44
Digital currencies	17	10
Total current assets	586	552
Non-current assets:
Property and equipment, net	1,482	602
Intangible assets, net	385	468
Investments, at cost		287
Total assets	2,453	1,908
Current liabilities:
Accounts payable	711	66
Accrued expenses	220	124
Other payables	10	1
Notes payable, net of discount, current portion	518
Total current liabilities	1,459	191
Non-current liabilities:
Notes payable, net of discount	493	2,300
Total liabilities	1,952	2,491
Commitments and Contingencies
Redeemable convertible preferred stock - Temporary equity
Preferred stock, Series A Convertible Preferred, $0.001 par value, 1,500,000 shares authorized at June 30, 2017 and December 31, 2016.  1,416,160 shares issued and held in treasury as of June 30, 2017 and December 31, 2016.  No shares outstanding at June 30, 2017 and December 31, 2016.
Equity (deficit)
Undesignated preferred stock, $0.001 par value, 8,500,000 shares authorized at June 30, 2017 and December 31, 2016. No shares issued or outstanding at June 30, 2017 and December 31, 2016
Common stock, $0.001 par value; 75,000,000 shares authorized; 38,957,855 and 28,722,855 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively	39	29
Additional paid-in capital	339,077	327,943
Accumulated other comprehensive loss		(66)
Accumulated deficit	(338,593)	(328,467)
Total equity (deficit) attributable to MGT stockholders	523	(561)
Non-controlling interests	(22)	(22)
Total equity (deficit)	501	(583)
Total liabilities, equity (deficit), redeemable convertible preferred stock and non-controlling interest	2,453	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 June 30, 2017 and December 31, 2016.  1,416,160 shares issued and held in treasury as of June 30, 2017 and December 31, 2016.  No shares outstanding at June 30, 2017 and December 31, 2016.
Undesignated Preferred Stock [Member]
Equity (deficit)
Undesignated preferred stock, $0.001 par value, 8,500,000 shares authorized at June 30, 2017 and December 31, 2016. No shares issued or outstanding at June 30, 2017 and December 31, 2016