1. Summary of Significant Accounting Policies (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Summary Of Significant Accounting Policies Tables Abstract
Gross accounts receivable	$ 3,204,640	$ 2,774,619
Allowance for doubtful accounts	(15,956)	(14,013)
Total accounts receivable, net	3,188,684	2,760,606
Audit, legal, payroll	172,900	234,119
Royalty costs	1,125,000	875,000
Sales and use tax	205,468	219,286
Sales and allowances	656,650	611,719
Other	213,385	289,437
Total accrued other expenses	$ 2,373,403	$ 2,229,561