000 - Document - Document And Entity Information
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001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited)
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002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)
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003 - Statement - Condensed Consolidated Statements of Comprehensive Loss (Unaudited)
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004 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited)
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005 - Disclosure - Note 1 - Organization and Summary of Significant Accounting Policies
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006 - Disclosure - Note 2 - Investments and Fair Value Measurement
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007 - Disclosure - Note 3 - Inventories
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008 - Disclosure - Note 4 - U.S. Department of Defense Contract
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009 - Disclosure - Note 5 - Collaboration Agreement
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010 - Disclosure - Note 6 - Long-term Debt
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011 - Disclosure - Note 7 - Liability Related to Sale of Future Royalties
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012 - Disclosure - Note 8 - Warrants
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013 - Disclosure - Note 9 - Stock-based Compensation
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014 - Document - Note 10 - Net Loss Per Share of Common Stock
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015 - Disclosure - Significant Accounting Policies (Policies)
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016 - Disclosure - Note 2 - Investments and Fair Value Measurement (Tables)
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017 - Disclosure - Note 3 - Inventories (Tables)
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018 - Disclosure - Note 5 - Collaboration Agreement (Tables)
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019 - Disclosure - Note 7 - Liability Related to Sale of Future Royalties (Tables)
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020 - Disclosure - Note 9 - Stock-based Compensation (Tables)
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021 - Disclosure - Note 10 - Net Loss Per Share of Common Stock (Tables)
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022 - Disclosure - Note 2 - Investments and Fair Value Measurement (Details Textual)
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023 - Disclosure - Note 2 - Investments and Fair Value Measurement - Summary of Cash, Cash Equivalents and Investments (Details)
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024 - Disclosure - Note 2 - Investments and Fair Value Measurement - Fair Value of Financial Assets and Liabilities by Level Within Fair Value Hierarchy (Details)
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025 - Disclosure - Note 2 - Investments and Fair Value Measurement - Assumptions Used in Black-Scholes Option Pricing Model to Estimate Fair Value of Pipe Warrants (Details)
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026 - Disclosure - Note 2 - Investments and Fair Value Measurement - Summary of Changes in Fair Value of Level III Financial Liabilities (Details)
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027 - Disclosure - Note 3 - Inventories - Inventory Components (Details)
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028 - Disclosure - Note 4 - U.S. Department of Defense Contract (Details Textual)
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029 - Disclosure - Note 5 - Collaboration Agreement (Details Textual)
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030 - Disclosure - Note 5 - Collaboration Agreement - A Summary of Revenue Recognized Under the Amended Agreements (Details)
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031 - Disclosure - Note 6 - Long-term Debt (Details Textual)
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032 - Disclosure - Note 7 - Liability Related to Sale of Future Royalties (Details Textual)
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033 - Disclosure - Note 7 - Liability Related to Sale of Future Royalties - Activity of Liability Related to Sale of Future Royalties (Details)
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034 - Disclosure - Note 8 - Warrants (Details Textual)
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035 - Disclosure - Note 9 - Stock-based Compensation (Details Textual)
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036 - Disclosure - Note 9 - Stock-based Compensation - Stock-based Compensation Expense (Details)
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037 - Disclosure - Note 10 - Net Loss Per Share of Common Stock - Computation of Basic and Diluted Net Loss Per Share of Common (Details)
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038 - Disclosure - Note 10 - Net Loss Per Share of Common Stock - Outstanding Shares of Common Stock Equivalents Excluded From Computation of Diluted Net Loss Per Share (Details)
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