Significant Risk Concentrations	3 Months Ended
Significant Risk Concentrations	Mar. 31, 2015
Risks And Uncertainties [Abstract]
Significant Risk Concentrations	8. Significant Risk Concentrations Significant Customer One customer accounted for $4.4 million, or 17% of total revenue for the three months ended March 31, 2015. One customer accounted for $2.6 million, or 12% of total revenue for the three months ended March 31, 2014. No other customers accounted for more than 10% of our total revenue for the three months ended March 31, 2015 or March 31, 2014. No customers had accounts receivable balances that were 10% or more of the total accounts receivable at March 31, 2015 or December 31, 2014. Significant Supplier We have two ODAs with Microsoft which enable us to sell Microsoft Windows Embedded operating systems to our customers in the United States, Canada, Argentina, Brazil, Chile, Columbia, Mexico, Peru, Puerto Rico, the Caribbean, the European Union, the European Free Trade Association, Turkey and Africa, which expire on June 30, 2016. We also have four ODAs with Microsoft which allow us to sell Microsoft Windows Mobile operating systems in the Americas (excluding Cuba), Japan, Taiwan, Europe, the Middle East, and Africa, which expire on June 30, 2015. Software sales under these agreements constitute a significant portion of our software revenue and total revenue. These agreements are typically renewed bi-annually, annually or semi-annually; however, there is no automatic renewal provision in any of these agreements. Further, these agreements can be terminated unilaterally by Microsoft at any time. Microsoft currently offers a rebate program to sell Microsoft Windows Embedded operating systems pursuant to which we earn money for achieving certain predefined objectives. Under this rebate program, we recognized $63,000 during the three months ended March 31, 2015 compared to $64,000 during the three months ended March 31, 2014. These rebates were treated as reductions in cost of sales. Additionally, during the three months ended March 31, 2015, we qualified for $147,000 in rebate credits, compared to $149,000 in rebate credits for the three months ended March 31, 2014. These are accounted for as reductions in marketing expense if and when qualified program expenditures are made.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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