Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 58	$ 216
Prepaid expenses and other current assets	161	125
Intangible digital assets	7	18
Total current assets	226	359
Non-current assets
Property and equipment, at cost, net	2,868	3,536
Right of use asset, operating lease, net of accumulated amortization	65	78
Other assets	123	321
Total assets	3,282	4,294
Current liabilities
Accounts payable	1,379	795
Accrued expenses and other payables	82	26
Current portion of SBA PPP Note	48
Note payable, net of discount	154	52
Management agreement termination liability	10	116
Operating lease liability	18	19
Total current liabilities	1,691	1,008
Non-current liabilities
SBA PPP Note, less current portion	60
Operating lease liability	47	59
Total liabilities	1,798	1,067
Commitments and Contingencies (Note 9)
Stockholders' Equity
Common stock, $0.001 par value; 2,500,000,000 shares authorized; 489,615,049 and 413,701,289 shares issued and outstanding at June 30, 2020 and December 31, 2019, respectively.	490	414
Additional paid-in capital	418,236	417,315
Accumulated deficit	(417,242)	(414,502)
Total stockholders' equity	1,484	3,227
Total Liabilities and Stockholders' Equity	3,282	4,294
Undesignated Preferred Stock [Member]
Stockholders' Equity
Preferred stock, value
Series B Preferred Stock [Member]
Stockholders' Equity
Preferred stock, value
Series C Convertible Preferred Stock [Member]
Stockholders' Equity
Preferred stock, value