Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 35,284,595	$ 48,251,336
Marketable securities	15,044,750	0
Accounts receivable	15,425,938	8,910,975
Prepaid and other current assets	2,121,145	1,936,842
Total current assets	67,876,428	59,099,153
Other assets
Property and equipment - net	93,519	171,190
Right of use assets - operating leases	997,777	278,455
Patents and patent applications - net	11,971	13,000
Other non-current assets	0	1,051,234
Total assets	68,979,695	60,613,032
Current liabilities
Accounts payable and accrued expenses	2,580,904	2,966,479
Accrued salaries and wages	1,347,552	908,516
Royalty payable	3,136,677	1,908,072
Deferred revenue	0	354,756
Operating leases	287,139	282,421
Total current liabilities	7,352,272	6,420,244
Long-term liabilities
Operating leases - long term	716,343	0
Convertible debt, net of unamortized discount	18,905,723	18,700,546
Total long-term liabilities	19,622,066	18,700,546
Total liabilities	26,974,338	25,120,790
Stockholders' equity
Common stock; par value $0.001; 200,000,000 shares authorized; 4,618,221 and 4,258,105 shares issued and outstanding at September 30, 2021 and December 31, 2020, respectively	4,618	4,259
Additional paid-in capital	104,460,194	100,203,979
Accumulated other comprehensive loss	(26,850)	(26,931)
Accumulated deficit	(62,432,605)	(64,689,065)
Total stockholders' equity	42,005,357	35,492,242
Total liabilities and stockholders' equity	$ 68,979,695	$ 60,613,032