Expiration date of OEM Distribution agreements for embedded operating systems.

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- Definition

Number of customer account as major customer.

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Number of OEM distribution agreements for embedded operating systems.

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- Definition

Number of OEM distribution agreements for mobile operating systems.

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- Definition

Distribution agreement mobile operating systems expiration date one.

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- Definition

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.

+ References

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-Name Accounting Standards Codification

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Significant Risk Concentrations - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014 Agreement	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013
Concentration Risk [Line Items]
Accounts receivable	$ 13,626,000us-gaap_AccountsReceivableNetCurrent	$ 15,893,000us-gaap_AccountsReceivableNetCurrent	$ 11,749,000us-gaap_AccountsReceivableNetCurrent	$ 11,235,000us-gaap_AccountsReceivableNetCurrent	$ 13,130,000us-gaap_AccountsReceivableNetCurrent	$ 12,811,000us-gaap_AccountsReceivableNetCurrent	$ 13,614,000us-gaap_AccountsReceivableNetCurrent	$ 12,639,000us-gaap_AccountsReceivableNetCurrent
Expiration date one of OEM Distribution agreements for embedded operating systems	Jun. 30, 2016
Number of OEM Distribution agreements for embedded operating systems	2
Expiration date of OEM Distribution agreements for mobile operating systems, non-EMEA	Jun. 30, 2015
Number of OEM Distribution agreements for mobile operating systems	4
Cost of revenue-service [Member]
Concentration Risk [Line Items]
Earnings under the rebate program	298,000	774,000
Reduction in marketing expense in the future [Member]
Concentration Risk [Line Items]
Earnings under the rebate program	685,000	409,000
Future Electronics, Inc. [Member]
Concentration Risk [Line Items]
Accounts receivable		3,700,000
Mitsubishi Electric Corporation [Member]
Concentration Risk [Line Items]
Accounts receivable		$ 2,800,000
Revenue [Member] \| Future Electronics, Inc. [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of customer account as major customer	1
Concentration risk, percentage	12.00%
Revenue [Member] \| Customer accounted for 10% or more [Member] \| Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Number of customer account as major customer	0	0
Revenue [Member] \| Customer accounted for 10% or more [Member] \| Customer Concentration Risk [Member] \| Minimum [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	10.00%
Accounts receivable [Member] \| Future Electronics, Inc. [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		23.00%
Accounts receivable [Member] \| Customer accounted for 10% or more [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Number of customer account as major customer	0	0
Accounts receivable [Member] \| Customer accounted for 10% or more [Member] \| Credit Concentration Risk [Member] \| Minimum [Member]
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%	10.00%
Accounts receivable [Member] \| Mitsubishi Electric Corporation [Member] \| Credit Concentration Risk [Member]
Concentration Risk [Line Items]
Concentration risk, percentage		18.00%