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Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Related Party Transaction [Line Items]
Other income	$ 480,000	$ 0	$ 480,000	$ 0
Available for sale securities	480,000		480,000		$ 84,000
Revenue from related party			0	24,000
Executives and Directors [Member]
Related Party Transaction [Line Items]
Accounts payable to related party	29,009		29,009		$ 17,209
VirTra, Inc. [Member]
Related Party Transaction [Line Items]
Expense under agreement			204,279	$ 116,873
Accrued expense to related party	27,714		27,714
Accrued royalty expense to related party	$ 132,704		$ 132,704