Condensed Consolidated Balance Sheets - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 31,103,165	$ 30,980,473
Accounts receivable	8,613,358	7,218,367
Prepaid and other current assets	861,782	1,055,816
Total current assets	40,578,305	39,254,656
Other assets
Property and equipment - net of accumulated depreciation	202,319	243,039
Right of use assets - operating leases	396,809	768,441
Patents and patent applications - net of accumulated amortization	13,344	14,373
Other non-current assets	1,051,234	0
Total assets	42,242,011	40,280,509
Current liabilities
Accounts payable and accrued expenses	2,553,416	1,316,773
Accrued salaries and wages	1,435,189	1,237,661
Royalty payable	1,951,677	1,620,182
Deferred revenue	360,041	918,272
Operating leases - current	400,571	516,931
Total current liabilities	6,700,894	5,609,819
Long-term liabilities
Operating leases - long term	0	254,664
Total long-term liabilities	0	254,664
Total liabilities	6,700,894	5,864,483
Stockholders' equity
Common stock; par value $0.001; 200,000,000 shares authorized; 4,258,105 and 4,186,438 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	4,259	4,187
Additional paid-in capital	99,654,992	97,239,455
Accumulated other comprehensive loss	(114,644)	0
Accumulated deficit	(64,003,490)	(62,827,616)
Total stockholders' equity	35,541,117	34,416,026
Total liabilities and stockholders' equity	$ 42,242,011	$ 40,280,509