Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and cash equivalent	$ 16,743,483	$ 4,923,515
Restricted cash	1,593,060	0
Accounts receivable	155,512	109,366
Deferred offering costs	0	33,164
Insurance deposits	2,211,625	749,454
Other current assets	886,386	313,812
Total current assets	21,590,066	6,129,311
Property and equipment, net	6,023	8,425
Intangible assets, net	24,625	80,031
Other assets	0	95,000
Total assets	21,620,714	6,312,767
Liabilities and Stockholders' Equity (Deficit)
Accounts payable	3,662,728	2,275,559
Accrued liabilities	6,277,940	4,359,348
Insurance reserve	1,963,609	2,113,039
Note payable, current portion	0	1,554,548
Deferred revenue	42,819	76,059
Total current liabilities	11,947,096	10,378,553
Note payable, net of current portion	1,999,175	444,627
Total liabilities	13,946,271	10,823,180
Commitments and contingencies (Note 3)
Stockholders' equity (deficit):
Preferred stock, 15,000,000 shares authorized, par value $0.00001, 0 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	0	0
Common stock, 50,000,000 shares authorized, par value $0.00001, 21,448,432 and 17,741,713 issued and outstanding as of September 30, 2021 and December 31, 2020, respectively	214	177
Additional paid-in capital	74,600,606	39,725,445
Accumulated deficit	(66,926,377)	(44,236,035)
Total stockholders' equity (deficit)	7,674,443	(4,510,413)
Total liabilities and stockholders' equity (deficit)	$ 21,620,714	$ 6,312,767