Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities
Net loss	$ (10,126)	$ (7,749)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	196	11
Amortization of intangible assets	83	57
Stock-based compensation expense	3,896	1,413
Stock issued for amendment of notes payable	118
Warrant modification expense		431
Loss on sale of investments - short term	84	1,193
Impairment of long-term investments	2,787
Impairment of intangible assets		(673)
Amortization of debt discount	48
Gain on sale of property and equipment	(48)
Impairment of goodwill		(1,496)
Change in operating assets and liabilities
Prepaid expenses and other current assets	67	(80)
Digital currencies	(7)
Accounts payable	645	48
Accrued expenses	105	1
Other payables		(1)
Net cash used in operating activities	(2,152)	(2,507)
Cash Flows From Investing Activities
Release of restricted cash and security deposit		39
Purchase of investment - short term		(414)
Purchase of investment - long term		(150)
Purchase of note receivable- long term		(45)
Proceeds from sale of investments	26	1,391
Purchase of property and equipment	(1,339)
Proceeds from sale of property and equipment	310
Net cash (used in) provided by investing activities	(1,003)	821
Cash Flows From Financing Activities
Proceeds from issuance of L2 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 private placement	1,150
Proceeds from sale/exercise of common stock warrants	100	2,427
Net cash provided by financing activities	3,133	2,427
Net change in cash and cash equivalents	(22)	741
Cash and cash equivalents, beginning of period	345	359
Cash and cash equivalents, end of period	323	1,100
Supplemental disclosure of cash flow information:
Cash paid for interest	43
Cash paid for income tax
Non-cash investing and financing activities:
Conversion of convertible debt	1,875
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	$ 1,504