1. Summary of Significant Accounting Policies (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Accounting Policies [Abstract]
Gross accounts receivable	$ 3,569,036	$ 2,774,619
Allowance for doubtful accounts	(17,219)	(14,013)
Total accounts receivable, net	3,551,817	2,760,606
Audit, legal, payroll	196,874	234,119
Royalty costs	1,125,000	875,000
Sales and use tax	171,563	219,286
Sales and allowances	809,698	611,719
Other	226,529	289,437
Total accrued other expenses	$ 2,529,664	$ 2,229,561