Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net loss	$ (20,621,286)	$ (10,123,249)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	67,302	78,233
Stock-based compensation expense	642,952	584,297
Deferred income taxes	(443,893)	(1,675,381)
Intangible asset impairment charge	8,639,000	0
Changes in operating assets and liabilities:
Prepaid expenses, deposits and other assets	(119,080)	(224,224)
Accounts payable, accrued expenses and other liabilities	358,703	1,202,283
Net cash used in operating activities	(11,476,302)	(10,158,041)
Cash flows provided by financing activities:
Proceeds from the sale of common stock and warrants, net of issuance costs	31,094,302	10,827,100
Proceeds from the exercise of common stock warrants	2,201,450	8,046,103
Payment of financing costs	0	(982,328)
Net cash provided by financing activities	33,295,752	17,890,875
Net increase in cash and cash equivalents	21,819,450	7,732,834
Cash and cash equivalents at beginning of period	18,515,595	14,177,349
Cash and cash equivalents at end of period	$ 40,335,045	$ 21,910,183