000 - Document - Document And Entity Information
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001 - Statement - Consolidated Balance Sheets (Current Period Unaudited)
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002 - Statement - Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)
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003 - Statement - Consolidated Statements of Comprehensive Loss (Unaudited)
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004 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited)
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005 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals)
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006 - Statement - Consolidated Statements of Cash Flows (Unaudited)
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007 - Disclosure - Note 1 - Description of Business and Significant Accounting Policies
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008 - Disclosure - Note 2 - Investments
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009 - Disclosure - Note 4 - Fair Value Measurements
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010 - Disclosure - Note 5 - Income Tax Provision
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011 - Document - Note 6 - Subsequent Events
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012 - Disclosure - Significant Accounting Policies (Policies)
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013 - Disclosure - Note 2 - Investments (Tables)
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014 - Disclosure - Note 4 - Fair Value Measurements (Tables)
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015 - Disclosure - Note 1 - Description of Business and Significant Accounting Policies (Details Textual)
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016 - Disclosure - Note 2 - Investments (Details Textual)
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017 - Disclosure - Note 2 - Investments - Amortized Cost and Fair Value of Available-for-sale and Held-to-maturity Investments (Details)
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018 - Disclosure - Note 2 - Investments - Amortized Cost and Fair Value of Debt Securities By Contractual Maturity (Details)
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019 - Disclosure - Note 2 - Investments - Realized Gains and Losses Related to the Sale of Securities (Details)
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020 - Disclosure - Note 2 - Investments - Gross Unrealized Losses (Details)
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021 - Disclosure - Note 4 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details)
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022 - Disclosure - Note 4 - Fair Value Measurements - Estimated Fair Values of the Company's Financial Assets and Liabilities (Details)
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023 - Disclosure - Note 5 - Income Tax Provision (Details Textual)
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