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Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Description of Business and Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Supplementary Financial Information link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Sale of Vehicle Sensors link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Impairment of Goodwill link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Credit Facility link:presentationLink link:calculationLink link:definitionLink 10801 - 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Business Segments, Significant Customer and Geographic Information - Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 41304 - Disclosure - Business Segments, Significant Customer and Geographic Information - Percentage of Revenue by Geographic region (Details) link:presentationLink link:calculationLink link:definitionLink 41401 - Disclosure - Quarterly Financial Data (Unaudited) (Details) link:presentationLink link:calculationLink link:definitionLink