1. Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2019

Accounting Policies [Abstract]

Reclassification of accounts receivable allowances to accrued other expenses

	September 30, 2019			December 31, 2018
Gross accounts receivable	$	4,770,069		$	2,774,619
Allowance for doubtful accounts		(22,562	)		(14,013	)
Total accounts receivable, net	$	4,747,507		$	2,760,606

Accrued other expenses:

	September 30, 2019		December 31, 2018
Audit, legal, payroll	$	179,762	$	234,119
Royalty costs		1,125,000		875,000
Sales and use tax		188,630		219,286
Sales allowances *		969,961		611,719
Other		243,182		289,437
Total accrued other expenses	$	2,706,534	$	2,229,561

Disaggregation of revenue

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Retailers	$	10,479,310	$	7,998,492	$	25,140,598	$	22,745,719
Distributors		122,111		552,346		1,095,335		1,255,259
Other		272,728		449,222		807,028		858,195
Total	$	10,874,149	$	9,000,060	$	27,042,961	$	24,859,173

Disaggregated revenue by product:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Cable Modems & gateways	$	10,004,676	$	8,162,319	$	24,291,501	$	22,782,715
Other		869,473		837,741		2,751,460		2,076,458
Total	$	10,874,149	$	9,000,060	$	27,042,961	$	24,859,173