Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows From Operating Activities
Net loss	$ (26,590)	$ (18,579)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	385	30
Amortization of intangible assets	124	57
Stock-based compensation expense	11,856	10,538
Stock issued for amendment of notes payable	118
Warrant modification expense		431
Loss on sale of investments - short term	84	1,083
Impairment of long-term investments	2,787	276
Impairment of intangible assets		673
Amortization of debt discount	1,071	41
Gain on sale of property and equipment	(58)
Impairment of goodwill		1,496
Inducement expense	5,764
Change in operating assets and liabilities
Prepaid expenses and other current assets	(681)	(130)
Digital currencies	(7)
Accounts payable	1,797	210
Accrued expenses	258	95
Other payables		7
Net cash used in operating activities	(3,092)	(3,772)
Cash Flows From Investing Activities
Release of restricted cash and security deposit		39
Purchase of investment - short term		(414)
Purchase of investment - long term		(265)
Purchase of note receivable- long term		(45)
Proceeds from sale of investments	26	1,805
Purchase of property and equipment	(3,897)	(321)
Proceeds from sale of property and equipment	440
Net cash (used in) provided by investing activities	(3,431)	799
Cash Flows From Financing Activities
Proceeds from issuance of L2 Front End Note	393
Proceeds from issuance of L2 Back End Note	393
Proceeds from issuance of 10% convertible promissory notes	100
Proceeds from issuance of Spring 2017 Notes	265
Proceeds from issuance of Illiad Notes	1,125
Proceeds from issuance of August 2017 Notes	295
Proceeds from issuance of September 2017 Notes	400
Proceeds from issuance of UAHC Notes	2,000
Proceeds from private placement	1,150
Proceeds from issuance of notes payable and warrants		2,300
Proceeds from sale of common stock warrants	100	2,427
Net cash provided by financing activities	6,221	4,727
Net change in cash and cash equivalents	(302)	1,754
Cash and cash equivalents, beginning of period	345	359
Cash and cash equivalents, end of period	43	2,113
Supplemental disclosure of cash flow information:
Cash paid for interest	48
Cash paid for income tax
Non-cash investing and financing activities:
Conversion of convertible debt and accrued interest	3,935
Issuance of L2 commitment note	160
Reclassification adjustment upon sale of available for sale investment in net loss	66	1,205
Unrealized gain on available for sale investments		82
Beneficial conversion feature on convertible debt and warrants issued concurrent with debt	4,593
Shares issued in satisfaction of accounts payable	401
Shares issued for prepaid services	$ 343