Business Risk and Credit Risk Concentration Involving Cash (Details) - Customer concentration risk	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017
Revenue | Next Generation Chemical Detector Partner
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	37.00%	0.00%	53.00%
Revenue | Department of Homeland Security Science and Technology Directorate Partner
Concentration Risk [Line Items]
Concentration risk, percentage	0.00%	63.00%	0.00%	47.00%
Revenue | Large Post-Production Film Company
Concentration Risk [Line Items]
Concentration risk, percentage	100.00%	0.00%	100.00%	0.00%
Accounts receivable | Department of Homeland Security Science and Technology Directorate Partner
Concentration Risk [Line Items]
Concentration risk, percentage			0.00%		100.00%