Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (14,851)	$ (5,361)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of right-of-use assets	23
Change in fair value of short-term investment	1,517	(3,827)
Change in fair value of long-term investment	(1,608)
Research and development-acquired license, expensed	525	1,128
Stock-based compensation	1,475	314
Realized loss (gain) on marketable securities	712	(501)
Unrealized loss on marketable securities	3,889	4,296
Realized gain on sale of digital currencies
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(344)	(429)
Accounts payable and accrued expenses	137	5
Accrued salaries and benefits	659	(73)
Lease liabilities	12
Interest receivable on convertible note	(586)	(107)
Deposits	(295)
Net cash used in operating activities	(8,735)	(4,555)
Cash flows from investing activities
Purchase of marketable securities	(27,479)	(90,541)
Sale of marketable securities	28,503	30,439
Proceeds from sale of digital currencies	93
Proceeds from sale of DatChat common shares		900
Proceeds from promissory note receivable interest received	65
Funds to deposit accounts, net		(4,420)
Purchase of short-term and long-term investments	(15,016)	(4,066)
Purchase of research and development licenses	(525)	(597)
Purchase of short-term and long-term promissory notes	(1,600)
Purchase of convertible note		(2,000)
Net cash used in investing activities	(15,959)	(70,285)
Cash flows from financing activities
Proceeds from issuance of common stock and warrants, net of offering cost		77,989
Proceeds from issuance of Series O and Series P Redeemable Convertible Preferred Stock, net of discount and offering cost	17,891
Proceeds from exercise of warrants		84
Payment for fractional shares	(26)
Redemption of Series O and Series P Redeemable Convertible Preferred Stock	(22,000)
Purchase of treasury stock	(2,237)
Net cash (used in) provided by financing activities	(6,372)	78,073
Net (decrease) increase in cash and cash equivalents and restricted cash	(31,066)	3,233
Cash and cash equivalents, beginning of period	65,562	2,715
Cash and cash equivalents, end of period	34,496	5,948
Non-cash investing and financing activities
Transfer from short-term investment to marketable securities	1,497
Reclassify from convertible note receivable to notes receivable at fair value	2,147
Promissory convertible note receivable conversion into common shares	$ 899
Unpaid investment		$ 1,000