Expiration date of original equipment manufacturers distribution agreements for embedded operating systems one.

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Number of original equipment manufacturers distribution agreements for embedded operating systems.

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Number of original equipment manufacturers distribution agreements for mobile operating systems.

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Original equipment manufacturers distribution agreement mobile operating systems expiration date one.

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Percentage of allocated rebate values.

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Rebate credits outstanding.

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Revenue recognition under rebates program.

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Significant Risk Concentrations - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2017 USD ($) Agreement	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Concentration Risk [Line Items]
Total revenue	$ 22,841,000	$ 25,439,000
Receivables	$ 15,751,000		$ 21,579,000
Expiration date one of OEM Distribution agreements for embedded operating systems	Jun. 30, 2018
Number of OEM Distribution agreements for embedded operating systems \| Agreement	2
Expiration date of OEM Distribution agreements for mobile operating systems, non-EMEA	Jun. 30, 2018
Number of OEM Distribution agreements for mobile operating systems \| Agreement	4
Rebate credits outstanding	$ 256,000
Cost of revenue [Member]
Concentration Risk [Line Items]
Allocation of rebate values, percentage	30.00%
Earnings under the rebate program	$ 110,000	86,000
Reduction in marketing expense [Member]
Concentration Risk [Line Items]
Allocation of rebate values, percentage	70.00%
Earnings under the rebate program	$ 155,000	201,000
Honeywell International Inc and affiliated entities [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Total revenue	3,300,000	$ 4,200,000
Honeywell International Inc and affiliated entities [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Receivables	$ 8,200,000		$ 7,100,000
Honeywell International Inc and affiliated entities [Member] \| Revenue [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	15.00%	16.00%
Honeywell International Inc and affiliated entities [Member] \| Accounts receivable [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	52.00%		33.00%
PACCAR Inc and affiliated entities [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Total revenue	$ 3,000,000
PACCAR Inc and affiliated entities [Member] \| Revenue [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	13.00%