000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Balance Sheets (Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Statements of Comprehensive Profit (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 995550 - Disclosure - Note 1 - Business and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995551 - Disclosure - Note 2 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 995552 - Disclosure - Note 3 - Investments link:calculationLink link:definitionLink link:presentationLink 995553 - Disclosure - Note 4 - Related Party Transactions link:calculationLink link:definitionLink link:presentationLink 995554 - Disclosure - Note 5 - Note Payable link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note 6 - Line of Credit Arrangement link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note 7 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note 8 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note 9 - Net Income (Loss) per Share link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note 2 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note 5 - Note Payable (Tables) link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note 7 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Note 9 - Net Income (Loss) per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Note 1 - Business and Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note 2 - Fair Value Measurements - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note 2 - Fair Value Measurements - Investments Measured at Fair Value Using Significant Unobservable Inputs (Details) link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note 2 - Fair Value Measurements - Additional Information about Level 3 Assets Measured at Fair Value on a Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note 3 - Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note 4 - Related Party Transactions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note 5 - Note Payable (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Note 5 - Note Payable - Scheduled Maturities (Details) link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Note 6 - Line of Credit Arrangement (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Note 7 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Note 7 - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note 7 - Income Taxes - Changes in Tax Positions (Details) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note 8 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note 9 - Net Income (Loss) per Share - Schedule of Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink