00100 - Statement - Consolidated Balance Sheets
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00200 - Statement - Consolidated Statements of Operations
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00400 - Statement - Consolidated Statements of Cash Flows
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40201 - Disclosure - Supplementary Financial Information - Inventories , Property and Equipment (Details)
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40202 - Disclosure - Supplementary Financial Information - Intangible Assets (Details)
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40203 - Disclosure - Supplementary Financial Information - Goodwill (Details)
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40204 - Disclosure - Supplementary Financial Information - Earnings Per Share (Details)
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40801 - Disclosure - Income Taxes - Components of current and deferred federal and state income tax (benefits) provisions (Details)
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40802 - Disclosure - Income Taxes - Components of income tax (benefit) expense (Details)
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40803 - Disclosure - Income Taxes - Reconciliation and Components (Details)
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40902 - Disclosure - Commitments and Contingencies - Related Party Transactions (Details)
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41001 - Disclosure - Stockholders' Equity (Details)
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41302 - Disclosure - Business Segments, Significant Customer and Geographic Information - Reconciliation of total segment (Details)
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00090 - Document - Document and Entity Information
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00105 - Statement - Consolidated Balance Sheets (Parenthetical)
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00300 - Statement - Consolidated Statements of Stockholders' Equity
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10101 - Disclosure - Description of Business and Summary of Significant Accounting Policies
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10201 - Disclosure - Supplementary Financial Information
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10301 - Disclosure - Sale of Vehicle Sensors
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10401 - Disclosure - Acquisitions
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10501 - Disclosure - Impairment of Goodwill
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10601 - Disclosure - Fair Value Measurements
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10701 - Disclosure - Credit Facility
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10801 - Disclosure - Income Taxes
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10901 - Disclosure - Commitments and Contingencies
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11001 - Disclosure - Stockholders' Equity
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11101 - Disclosure - Employee Benefit Plans
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11201 - Disclosure - Stock Repurchase Program
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11301 - Disclosure - Business Segments, Significant Customer and Geographic Information
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11401 - Disclosure - Quarterly Financial Data (Unaudited)
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20102 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Policies)
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30203 - Disclosure - Supplementary Financial Information (Tables)
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30803 - Disclosure - Income Taxes (Tables)
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30903 - Disclosure - Commitments and Contingencies (Tables)
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31003 - Disclosure - Stockholders' Equity (Tables)
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31103 - Disclosure - Employee Benefit Plans (Tables)
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31303 - Disclosure - Business Segments, Significant Customer and Geographic Information (Tables)
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31403 - Disclosure - Quarterly Financial Data (Unaudited) (Tables)
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40101 - Disclosure - Description of Business and Summary of Significant Accounting Policies (Details)
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40205 - Disclosure - Supplementary Financial Information - Earnings Per Share Excluded weighted average (Details)
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40301 - Disclosure - Sale of Vehicle Sensors (Details)
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40401 - Disclosure - Acquisitions - Berkeley and Meridian (Details)
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40501 - Disclosure - Impairment of Goodwill (Details)
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40601 - Disclosure - Fair Value Measurements (Details)
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40701 - Disclosure - Credit Facility (Details)
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40804 - Disclosure - Income Taxes - Federal and State tax credit carryforwards (Details)
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40805 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details)
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40901 - Disclosure - Commitments and Contingencies - Litigation and Other Contingencies (Details)
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40903 - Disclosure - Commitments and Contingencies - Inventory Purchase Commitments (Details)
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41101 - Disclosure - Employee Benefit Plans (Details)
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41102 - Disclosure - Employee Benefit Plans - Expense (Details)
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41103 - Disclosure - Employee Benefit Plans - Stock options granted (Details)
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41104 - Disclosure - Employee Benefit Plans - Employee incentive programs (Details)
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41201 - Disclosure - Stock Repurchase Program (Details)
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41301 - Disclosure - Business Segments, Significant Customer and Geographic Information - Business segments (Details)
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41303 - Disclosure - Business Segments, Significant Customer and Geographic Information - Concentration Risk (Details)
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41304 - Disclosure - Business Segments, Significant Customer and Geographic Information - Percentage of Revenue by Geographic region (Details)
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41401 - Disclosure - Quarterly Financial Data (Unaudited) (Details)
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