Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities
Net (loss) income	$ (4,183)	$ 1,727
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of patent portfolio		1,405
Change in fair value of investment	(1,406)	(8,194)
Change in fair value of warrant liabilities	(82)	(740)
Research and development-acquired license, expensed	2,512
Stock-based compensation	329	320
Depreciation expense		38
Realized loss on marketable securities	172	400
Unrealized loss (gain) on marketable securities	(145)	117
Impairment of intangible assets		2,173
Changes in assets and liabilities:
Prepaid expenses and other assets	7	(38)
Accounts payable and accrued expenses	(64)	74
Accrued salaries and benefits	(50)	37
Payable to DatChat	(107)
Accrued lease liabilities		(48)
Net cash used in operating activities	(3,017)	(2,729)
Cash flows from investing activities
Purchase of marketable securities	(8,461)	(14,280)
Sale of marketable securities	10,277	15,061
Purchase of investments at fair value	(200)	(922)
Release of deposit		26
Purchase of research and development licenses	(360)
Purchase of property and equipment		(36)
Net cash provided by (used in) investing activities	1,256	(151)
Cash flows from financing activities
Proceeds from issuance common stock, net of offering cost	787	2,700
Proceeds from issuance common stock/ At-the-market offering	1,154
Offering costs fro the issuance of common stock / At-the-market offering	(106)
Net cash provided by financing activities	1,835	2,700
Net increase (decrease) in cash and cash equivalents	74	(180)
Cash and cash equivalents, beginning of period	17	197
Cash and cash equivalents, end of period	91	17
Non-cash investing and financing activities
Investment in DatChat		207
Investment in Mellow Scooters		2
Distribution of Hoth common stock	$ 1,698