000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Statements of Operations (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 006 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 2 - Income (Loss) Per Share link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 3 - Intangible Assets link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 4 - Accrued Expenses link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 5 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 6 - Customer and Vendor Concentrations link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 7 - Lease Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 8 - Segment Information link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 9 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995461 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995462 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995463 - Disclosure - Note 2 - Income (Loss) Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 3 - Intangible Assets (Tables) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 4 - Accrued Expenses (Tables) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 5 - Stockholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 7 - Lease Commitments and Contingencies (Tables) link:calculationLink link:definitionLink link:presentationLink 995468 - Disclosure - Note 8 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies 1 (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies 2 (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies - Schedule of Contract Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies - Schedule of Deferred Tax Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 1 - Business Activity and Summary of Significant Accounting Policies - Schedule of Warranty Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995475 - Disclosure - Note 2 - Income (Loss) Per Share - Schedule of Loss Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995476 - Disclosure - Note 2 - Income (Loss) Per Share - Schedule of Antidilutive Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995477 - Disclosure - Note 3 - Intangible Assets (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995478 - Disclosure - Note 3 - Intangible Assets - Schedule of Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995479 - Disclosure - Note 3 - Intangible Assets - Schedule of Future Amortization Expense (Details) link:calculationLink link:definitionLink link:presentationLink 995480 - Disclosure - Note 4 - Accrued Expenses - Schedule of Accrued Expenses (Details) link:calculationLink link:definitionLink link:presentationLink 995481 - Disclosure - Note 5 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995482 - Disclosure - Note 5 - Stockholders' Equity - Schedule of Valuation Assumptions (Details) link:calculationLink link:definitionLink link:presentationLink 995483 - Disclosure - Note 5 - Stockholders' Equity - Schedule of Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995484 - Disclosure - Note 5 - Stockholders' Equity - Schedule Stock Options (Details) link:calculationLink link:definitionLink link:presentationLink 995485 - Disclosure - Note 6 - Customer and Vendor Concentrations (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995486 - Disclosure - Note 7 - Lease Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995487 - Disclosure - Note 7 - Lease Commitments and Contingencies - Schedule of Future Lease Payments (Details) link:calculationLink link:definitionLink link:presentationLink 995488 - Disclosure - Note 7 - Lease Commitments and Contingencies - Schedule of Future Lease Payments (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995489 - Disclosure - Note 7 - Lease Commitments and Contingencies - Schedule of Operating Lease and Right of Use Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995490 - Disclosure - Note 8 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995491 - Disclosure - Note 8 - Segment Information - Segment Expenses (Details) link:calculationLink link:definitionLink link:presentationLink 995492 - Disclosure - Note 9 - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink