Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows From Operating Activities
Net loss	$ (1,324)	$ (1,709)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation	342
Gain on sale of property and equipment	(30)	(82)
Change in fair value of liability	(15)
Stock-based compensation expense	220	949
Extinguishment of note payable		(1,311)
Amortization of note discount	421	1,127
Change in operating assets and liabilities
Prepaid expenses and other current assets	57	52
Intangible digital assets	6	30
Management agreement termination liability	(44)
Right of use asset	9	18
Operating lease liability	(9)	(18)
Accounts payable	453	(174)
Accrued expenses	97	9
Net cash provided by provided by (used in) operating activities	183	(1,109)
Cash Flows From Investing Activities
Purchase of property and equipment	(343)
Payment of security deposit	(38)
Net cash used in investing activities	(381)
Cash Flows From Financing Activities
Proceeds from sale of stock under equity purchase agreement, net of issuance costs		1,457
Repayment of notes payable		(82)
Net cash provided by financing activities		1,375
Net change in cash and cash equivalents	(198)	266
Cash and cash equivalents, beginning of period	216	96
Cash and cash equivalents, end of period	18	362
Supplemental disclosure of cash flow information
Cash paid for interest		3
Cash paid for income tax
Non-cash investing and financing activities
Cumulative effect adjustment related to ASU adoption		3
Conversion of notes payable into common stock	350
Repayment of note payable and interest through the issuance of shares under the equity purchase agreement		$ 351