Segments We report segment information based on the management approach. The management approach designates the internal reporting used by management for making decisions and assessing performance as the source of our reportable segments. Our chief executive officer, or CEO, the chief operating decision maker, reviews revenue and gross margin information for each of our reportable segments. In addition, with the exception of accounts receivable and goodwill and intangible assets, we do not identify or allocate our assets by the reportable segments. We report results in three business segments: Automotive - Our automotive segment utilizes our connected car platform to deliver enhanced location-based navigation services to automobile manufacturers and tier ones. We primarily offer three variations of our connected car products and services to our automobile manufacturer and tier one customers. First, we offer on-board navigation systems that are built into vehicles with all key elements of the system residing in the vehicle as a self-contained application along with the related software and content. Our on-board navigation products do not require access to the Internet or wireless networks to function. Second, we offer advanced hybrid navigation solutions that contain on-board functionality and also add cloud functionality such as cloud search, cloud routing, map updates and live data. We refer to these solutions as hybrid navigation. Third, we offer mobile phone-based navigation solutions that run on the phone and provide an interactive map and navigation instructions to the vehicles video screen and audio system , which we refer to as brought-in navigation. Finally, we offer a Navigation Software Development Kit, or SDK, that enables our customers to add mapping and location capabilities to their cloud, mobile and on-board automotive applications. Advertising - Our advertising segment provides interactive mobile advertisements on behalf of our advertising clients to consumers based specifically on the location of the user and other sophisticated targeting capabilities. Our customers include advertisers and advertising agencies. Mobile Navigation - Our mobile navigation segment provides our map and navigation platform to end users through mobile devices. We distribute our services primarily through our wireless carrier partners. Our segment results for the three months ended September 30, 2018 and 2017 were as follows (dollars in thousands): Three Months Ended September 30, 2018 2017 Automotive Revenue $ 43,451 $ 45,608 Cost of revenue 26,959 30,861 Gross profit $ 16,492 $ 14,747 Gross margin 38 % 32 % Advertising Revenue $ 5,947 $ 7,615 Cost of revenue 3,220 3,412 Gross profit $ 2,727 $ 4,203 Gross margin 46 % 55 % Mobile Navigation Revenue $ 2,770 $ 3,739 Cost of revenue 925 1,550 Gross profit $ 1,845 $ 2,189 Gross margin 67 % 59 % Total Revenue $ 52,168 $ 56,962 Cost of revenue 31,104 35,823 Gross profit $ 21,064 $ 21,139 Gross margin 40 % 37 %