000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Consolidated Balance Sheets link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Consolidated Balance Sheets (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Consolidated Statements of Operations and Comprehensive Loss link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Statements of Changes in Stockholders' Equity (Deficit) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note 1 - Description of Business link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note 2 - Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note 3 - Balance Sheet Accounts link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note 4 - Intangible Assets, Net link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Note 5 - Goodwill link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note 6 - COVID Loan link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note 7 - Convertible Note link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note 8 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Note 9 - Equity link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Note 10 - Retirement Plans link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note 11 - Warrants link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note 12 - Leases link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note 13 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note 14 - Related Party Transactions link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note 15 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note 16 - Segment Information link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Note 17 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Note 3 - Balance Sheet Accounts (Tables) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note 4 - Intangible Assets, Net (Tables) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note 5 - Goodwill (Tables) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note 6 - COVID Loan (Tables) link:calculationLink link:definitionLink link:presentationLink 995578 - Disclosure - Note 8 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 995579 - Disclosure - Note 9 - Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995580 - Disclosure - Note 10 - Retirement Plans (Tables) link:calculationLink link:definitionLink link:presentationLink 995581 - Disclosure - Note 11 - Warrants (Tables) link:calculationLink link:definitionLink link:presentationLink 995582 - Disclosure - Note 12 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995583 - Disclosure - Note 15 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995584 - Disclosure - Note 16 - Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995585 - Disclosure - Note 1 - Description of Business (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995586 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995587 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Schedule of Allowance for Credit Losses (Details) link:calculationLink link:definitionLink link:presentationLink 995588 - Disclosure - Note 3 - Balance Sheet Accounts (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995589 - Disclosure - Note 3 - Balance Sheet Accounts - Schedule of Accounts Receivable (Details) link:calculationLink link:definitionLink link:presentationLink 995590 - Disclosure - Note 3 - Balance Sheet Accounts - Schedule of Customer Concentration (Details) link:calculationLink link:definitionLink link:presentationLink 995591 - Disclosure - Note 3 - Balance Sheet Accounts - Schedule of Inventory (Details) link:calculationLink link:definitionLink link:presentationLink 995592 - Disclosure - Note 3 - Balance Sheet Accounts - Schedule of Property, Plant, and Equipment (Details) link:calculationLink link:definitionLink link:presentationLink 995593 - Disclosure - Note 3 - Balance Sheet Accounts - Depreciation (Details) link:calculationLink link:definitionLink link:presentationLink 995594 - Disclosure - Note 3 - Balance Sheet Accounts - Accrued Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995595 - Disclosure - Note 4 - Intangible Assets, Net (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995596 - Disclosure - Note 4 - Intangible Assets, Net - Schedule of Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995597 - Disclosure - Note 4 - Intangible Assets, Net - Amortization Expenses (Details) link:calculationLink link:definitionLink link:presentationLink 995598 - Disclosure - Note 5 - Goodwill (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995599 - Disclosure - Note 5 - Goodwill - Schedule of Goodwill (Details) link:calculationLink link:definitionLink link:presentationLink 995600 - Disclosure - Note 6 - COVID Loan (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995601 - Disclosure - Note 6 - COVID Loan - Schedule of Debt Maturities (Details) link:calculationLink link:definitionLink link:presentationLink 995602 - Disclosure - Note 7 - Convertible Note (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995603 - Disclosure - Note 8 - Fair Value Measurements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995604 - Disclosure - Note 8 - Fair Value Measurements - Schedule of Fair Value Liabilities Measured on Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995605 - Disclosure - Note 8 - Fair Value Measurements - Schedule of Fair Value Valuation (Details) link:calculationLink link:definitionLink link:presentationLink 995606 - Disclosure - Note 8 - Fair Value Measurements - Equity Financing (Details) link:calculationLink link:definitionLink link:presentationLink 995607 - Disclosure - Note 8 - Fair Value Measurements - Reconciliation of Liabilities with Unobservable Inputs (Details) link:calculationLink link:definitionLink link:presentationLink 995608 - Disclosure - Note 8 - Fair Value Measurements - Reconciliation of Liabilities with Unobservable Inputs (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995609 - Disclosure - Note 9 - Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995610 - Disclosure - Note 9 - Equity - Schedule of Preferred Stock Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995611 - Disclosure - Note 9 - Equity - Measurement Inputs to Compute Incremental Value (Details) link:calculationLink link:definitionLink link:presentationLink 995612 - Disclosure - Note 9 - Equity - Schedule of Dividends (Details) link:calculationLink link:definitionLink link:presentationLink 995613 - Disclosure - Note 9 - Equity - RSU Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995614 - Disclosure - Note 9 - Equity - Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995615 - Disclosure - Note 10 - Retirement Plans (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995616 - Disclosure - Note 10 - Retirement Plans - Schedule of Net Benefit Costs (Details) link:calculationLink link:definitionLink link:presentationLink 995617 - Disclosure - Note 10 - Retirement Plans - Schedule of Net Benefit Costs (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995618 - Disclosure - Note 10 - Retirement Plans - Schedule of Projected Benefit Obligations (Details) link:calculationLink link:definitionLink link:presentationLink 995619 - Disclosure - Note 10 - Retirement Plans - Changes in Fair Value of Plan Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995620 - Disclosure - Note 10 - Retirement Plans - Defined Benefit Plan Assets By Category (Details) link:calculationLink link:definitionLink link:presentationLink 995621 - Disclosure - Note 10 - Retirement Plans - Schedule of Funded Status (Details) link:calculationLink link:definitionLink link:presentationLink 995622 - Disclosure - Note 10 - Retirement Plans - Schedule of Amounts Recognized in Other Comprehensive Income (Loss) (Details) link:calculationLink link:definitionLink link:presentationLink 995623 - Disclosure - Note 10 - Retirement Plans - Schedule of Actuarial Assumptions (Details) link:calculationLink link:definitionLink link:presentationLink 995624 - Disclosure - Note 10 - Retirement Plans - Schedule of Expected Benefit Payments (Details) link:calculationLink link:definitionLink link:presentationLink 995625 - Disclosure - Note 11 - Warrants (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995626 - Disclosure - Note 11 - Warrants - Schedule of Warrant Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995627 - Disclosure - Note 12 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995628 - Disclosure - Note 12 - Leases - Balance Sheet Information (Details) link:calculationLink link:definitionLink link:presentationLink 995629 - Disclosure - Note 12 - Leases - Schedule of Future Maturities (Details) link:calculationLink link:definitionLink link:presentationLink 995630 - Disclosure - Note 12 - Leases - Summary of Lease Costs (Details) link:calculationLink link:definitionLink link:presentationLink 995631 - Disclosure - Note 12 - Leases - Supplemental Cash Flow Information (Details) link:calculationLink link:definitionLink link:presentationLink 995632 - Disclosure - Note 13 - Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995633 - Disclosure - Note 15 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995634 - Disclosure - Note 15 - Income Taxes - Income Tax Reconciliation (Details) link:calculationLink link:definitionLink link:presentationLink 995635 - Disclosure - Note 15 - Income Taxes - Deferred Tax Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995636 - Disclosure - Note 15 - Income Taxes - Summary of Income (Loss) Before Income Taxes (Details) link:calculationLink link:definitionLink link:presentationLink 995637 - Disclosure - Note 16 - Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995638 - Disclosure - Note 16 - Segment Information - Schedule of Assets by Segmentation (Details) link:calculationLink link:definitionLink link:presentationLink 995639 - Disclosure - Note 16 - Segment Information - Schedule of Net Income (Loss) by Segment (Details) link:calculationLink link:definitionLink link:presentationLink 995640 - Disclosure - Note 16 - Segment Information - Schedule of Revenue by Geographic Area (Details) link:calculationLink link:definitionLink link:presentationLink 995641 - Disclosure - Note 17 - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink