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 - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Disclosure - Note 1 - Business and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 006 - Disclosure - Note 2 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 3 - Investments link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 4 - Related Party Transactions link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 5 - Note Payable link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 6 - Line of Credit Arrangement link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 7 - State Franchise Taxes Payable link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 8 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 9 - Management's Plans link:calculationLink link:definitionLink link:presentationLink 995445 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995446 - Disclosure - Note 2 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 995447 - Disclosure - Note 5 - Note Payable (Tables) link:calculationLink link:definitionLink link:presentationLink 995448 - Disclosure - Note 8 - Stockholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995449 - Disclosure - Note 1 - Business and Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995450 - Disclosure - Note 2 - Fair Value Measurements - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995451 - Disclosure - Note 2 - Fair Value Measurements - Investments Measured at Fair Value Using Significant Unobservable Inputs (Details) link:calculationLink link:definitionLink link:presentationLink 995452 - 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 995453 - Disclosure - Note 3 - Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995454 - Disclosure - Note 4 - Related Party Transactions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995455 - Disclosure - Note 5 - Note Payable (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995456 - Disclosure - Note 5 - Note Payable - Scheduled Maturities (Details) link:calculationLink link:definitionLink link:presentationLink 995457 - Disclosure - Note 6 - Line of Credit Arrangement (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995458 - Disclosure - Note 7 - State Franchise Taxes Payable (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995459 - Disclosure - Note 8 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995460 - Disclosure - Note 8 - Stockholders' Equity - Computation of Basic and Diluted Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995461 - Disclosure - Note 8 - Stockholders' Equity - Computation of Comprehensive Earnings (Loss) Per Share (Details) link:calculationLink link:definitionLink link:presentationLink