Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating activities:
Net loss	$ (8,421,892)	$ (5,684,038)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	48,202	54,041
Stock-based compensation expense	478,560	304,824
Deferred income taxes	0	(869,705)
Changes in operating assets and liabilities:
Prepaid expenses, deposits and other assets	(291,068)	(604,558)
Accounts payable, accrued expenses and other liabilities	(317,576)	151,411
Net cash used in operating activities	(8,503,774)	(6,648,025)
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	8,038,603
Payment of financing costs	0	(833,428)
Net cash provided by financing activities	33,295,752	18,032,275
Net increase in cash and cash equivalents	24,791,978	11,384,250
Cash and cash equivalents at beginning of period	18,515,595	14,177,349
Cash and cash equivalents at end of period	43,307,573	25,561,599
Supplemental disclosure of non-cash investing and financing activities:
Offering costs in accounts payable	$ 0	$ 148,900