Accounts Receivable and Significant Concentrations (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of accounts receivable

	SEPTEMBER 30,		DECEMBER 31,
	2018		2017
	(Unaudited)
Government	$	5,738,189	$	6,055,397
Commercial		2,381,034		2,183,246
Gross accounts receivable		8,119,223		8,238,643
Less: allowances for doubtful
accounts		96,846		107,618
Accounts receivable, net	$	8,022,377	$	8,131,025

Accounts Receivable [Member]

Schedules of concentration of risk

	SEPTEMBER 30,			DECEMBER 31,
	2018			2017
	As a % of			As a % of
Customer Name	Receivables			Receivables
	(Unaudited)
U.S. Customs Border Patrol		8	%		12	%
U.S. Immigration and Customs Enforcement		14	%		13	%
U.S. Federal Air Marshall Service		4	%		10	%

Sales Revenue, Net [Member]

Schedules of concentration of risk

	THREE MONTHS ENDED						NINE MONTHS ENDED
	SEPTEMBER 30,						SEPTEMBER 30,
	2018			2017			2018			2017
	As a % of			As a % of			As a % of			As a % of
Customer Name	Revenues			Revenues			Revenues			Revenues
	(Unaudited)
U.S. Immigration and Customs Enforcement		16	%		18	%		18	%		17	%
U.S. Customs Border Patrol		15	%		9	%		11	%		11	%
U.S. Citizenship and Immigration Services		15	%		5	%		5	%		5	%