Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash	$ 65,562	$ 2,715
Marketable securities	11,427	24,801
Prepaid expenses and other assets	442	215
Short-term investments at fair value	2,273
Notes receivable at fair value	6,984
Deposits	4,201
Total current assets	90,889	27,731
Convertible note receivable at fair value	2,147
Investments	9,465	2,764
Security deposit	155
Total assets	102,656	30,495
Current liabilities
Accounts payable and accrued expenses	381	567
Accrued salaries and benefits	680	310
Total current liabilities	1,061	877
Total liabilities	1,061	877
Commitments and contingencies
Stockholders’ equity
Preferred stock value
Common stock, $0.0001 par value, 100,000,000 shares authorized; 89,681,258 and 34,920,222 shares issued at December 31, 2021 and 2020, respectively; 89,681,255 and 34,920,219 shares outstanding at December 31, 2021 and 2020, respectively	9	3
Additional paid-in capital	265,624	186,482
Treasury stock, at cost, 3 shares at December 31, 2021 and 2020	(264)	(264)
Accumulated deficit	(163,774)	(156,603)
Total stockholders’ equity	101,595	29,618
Total liabilities and stockholders’ equity	102,656	30,495
Series D Preferred Stock
Stockholders’ equity
Preferred stock value
Series D-1 Preferred Stock
Stockholders’ equity
Preferred stock value