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 and Comprehensive Loss (Unaudited) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statement 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 - General Information link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 2 - Liquidity link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 3 - Investments link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 4 - Leases link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 5 - Property and Equipment, Net link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 6 - Intangible Assets, Net link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 7 - Warranty Reserve link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 8 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 9 - Net Loss Per Share link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 10 - Revenue Recognition link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 11 - Fair Value Measurement link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 12 - Business Risk and Credit Risk Concentration Involving Cash link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 13 - Stock-based Compensation link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 14 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 15 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 021 - Disclosure - Note 16 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 022 - Disclosure - Note 17 - Related Party link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 1 - General Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 3 - Investments (Tables) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 4 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 5 - Property and Equipment, Net (Tables) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 6 - Intangible Assets, Net (Tables) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 8 - Stockholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995475 - Disclosure - Note 9 - Net Loss Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995476 - Disclosure - Note 11 - Fair Value Measurement (Tables) link:calculationLink link:definitionLink link:presentationLink 995477 - Disclosure - Note 13 - Stock-based Compensation (Tables) link:calculationLink link:definitionLink link:presentationLink 995478 - Disclosure - Note 1 - General Information - Revenue by Geographic Area (Details) link:calculationLink link:definitionLink link:presentationLink 995479 - Disclosure - Note 1 - General Information - Revenue by Product (Details) link:calculationLink link:definitionLink link:presentationLink 995480 - Disclosure - Note 2 - Liquidity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995481 - Disclosure - Note 3 - Investments - Schedule of Investments (Details) link:calculationLink link:definitionLink link:presentationLink 995482 - Disclosure - Note 4 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995483 - Disclosure - Note 4 - Leases - Schedule of Balance Sheet Presentation of Operating and Finance Leases (Details) link:calculationLink link:definitionLink link:presentationLink 995484 - Disclosure - Note 4 - Leases - Schedule of Future Minimum Lease Payments (Details) link:calculationLink link:definitionLink link:presentationLink 995485 - Disclosure - Note 4 - Leases - Schedule of Other Information (Details) link:calculationLink link:definitionLink link:presentationLink 995486 - Disclosure - Note 5 - Property and Equipment, Net (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995487 - Disclosure - Note 5 - Property and Equipment - Schedule of Property and Equipment (Details) link:calculationLink link:definitionLink link:presentationLink 995488 - Disclosure - Note 6 - Intangible Assets, Net - Schedule of Indefinite-Lived Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995489 - Disclosure - Note 7 - Warranty Reserve (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995490 - Disclosure - Note 8 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995491 - Disclosure - Note 8 - Stockholders' Equity - Schedule of Warrant Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995492 - Disclosure - Note 9 - Net Loss Per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995493 - Disclosure - Note 9 - Net Loss Per Share - Schedule of Basic and Diluted Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995494 - Disclosure - Note 10 - Revenue Recognition (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995495 - Disclosure - Note 11 - Fair Value Measurement - Schedule of Fair Value Measurement of Financial Instruments (Details) link:calculationLink link:definitionLink link:presentationLink 995496 - Disclosure - Note 12 - Business Risk and Credit Risk Concentration Involving Cash (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995497 - Disclosure - Note 13 - Stock-based Compensation (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995498 - Disclosure - Note 13 - Stock-based Compensation - Stock Option Activity Summary (Details) link:calculationLink link:definitionLink link:presentationLink 995499 - Disclosure - Note 13 - Stock-based Compensation - Stock Options Outstanding (Details) link:calculationLink link:definitionLink link:presentationLink 995500 - Disclosure - Note 13 - Stock-based Compensation - Restricted Stock Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995501 - Disclosure - Note 14 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995502 - Disclosure - Note 17 - Related Party (Details Textual) link:calculationLink link:definitionLink link:presentationLink