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Significant Risk Concentrations - Additional Information (Detail) - USD ($)		3 Months Ended		12 Months Ended
	Mar. 01, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Concentration Risk [Line Items]
Total revenue		$ 15,096,000	$ 20,678,000
Accounts receivable		$ 9,713,000		$ 11,581,000
Distribution partners in Europe, Turkey and Africa existing distribution agreements expiration date		Jun. 30, 2019
ODAs windows mobile operating system expiration date	Apr. 30, 2022
Rebate credits outstanding		$ 328,000
Cost of revenue [Member]
Concentration Risk [Line Items]
Allocation of rebate values, percentage		20.00%	30.00%
Reduction to marketing expense [Member]
Concentration Risk [Line Items]
Allocation of rebate values, percentage		80.00%	70.00%
Third Party Software [Member]
Concentration Risk [Line Items]
Total revenue		$ 13,101,000	$ 16,064,000
Percentage of sales from existing distribution agreements on total revenues		3.70%
Honeywell International Inc and affiliated entities [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Total revenue			$ 2,700,000
Honeywell International Inc and affiliated entities [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Accounts receivable		$ 2,300,000		$ 2,800,000
Revenue [Member] \| Honeywell International Inc and affiliated entities [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage			13.00%
Accounts receivable [Member] \| Honeywell International Inc and affiliated entities [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		24.00%		24.00%