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 Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 995554 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note B - Revenue From Contracts With Customers link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note C - Fair Values of Financial Instruments link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note D - Concentration of Risk link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note E - Inventory link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Note F - Equipment and Leasehold Improvements link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note G - Intangible Assets And Goodwill link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note H - Investments link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note I - Accrued Liabilities link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Note J - Note Payable link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Note K - Leases link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note L - Contingencies link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note M - Equity link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note N - Stock Options link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note O - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note P - Savings Plans link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note Q - Earnings Per Share (EPS) link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Note R - Segments link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Note S - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note B - Revenue From Contracts With Customers (Tables) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note E - Inventory (Tables) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note F - Equipment and Leasehold Improvements (Tables) link:calculationLink link:definitionLink link:presentationLink 995578 - Disclosure - Note G - Intangible Assets And Goodwill (Tables) link:calculationLink link:definitionLink link:presentationLink 995579 - Disclosure - Note I - Accrued Liabilities (Tables) link:calculationLink link:definitionLink link:presentationLink 995580 - Disclosure - Note K - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995581 - Disclosure - Note M - Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995582 - Disclosure - Note N - Stock Options (Tables) link:calculationLink link:definitionLink link:presentationLink 995583 - Disclosure - Note O - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995584 - Disclosure - Note Q - Earnings Per Share (EPS) (Tables) link:calculationLink link:definitionLink link:presentationLink 995585 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995586 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies - Summary of Accounts Receivable (Details) link:calculationLink link:definitionLink link:presentationLink 995587 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies - Estimated Useful Lives for Depreciation and Amortization (Details) link:calculationLink link:definitionLink link:presentationLink 995588 - Disclosure - Note A - The Company and Summary of Significant Accounting Policies - Share-based Compensation Expenses for Continuing Operations (Details) link:calculationLink link:definitionLink link:presentationLink 995589 - Disclosure - Note B - Revenue From Contracts With Customers (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995590 - Disclosure - Note B - Revenue From Contracts With Customers - Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 995591 - Disclosure - Note D - Concentration of Risk (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995592 - Disclosure - Note E - Inventory - Components of Inventory (Details) link:calculationLink link:definitionLink link:presentationLink 995593 - Disclosure - Note F - Equipment and Leasehold Improvements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995594 - Disclosure - Note F - Equipment and Leasehold Improvements - Summary of Equipment and Leasehold Improvements (Details) link:calculationLink link:definitionLink link:presentationLink 995595 - Disclosure - Note G - Intangible Assets And Goodwill (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995596 - Disclosure - Note G - Intangible Assets - Summary of Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995597 - Disclosure - Note G - Intangible Assets and Goodwill - Amortization Expense (Details) link:calculationLink link:definitionLink link:presentationLink 995598 - Disclosure - Note H - Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995599 - Disclosure - Note I - Accrued Liabilities (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995600 - Disclosure - Note I - Accrued Liabilities - Summary of Accrued Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995601 - Disclosure - Note J - Note Payable (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995602 - Disclosure - Note K - Leases - Operating Lease Balance Sheet Information (Details) link:calculationLink link:definitionLink link:presentationLink 995603 - Disclosure - Note M - Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995604 - Disclosure - Note M - Equity - Valuation Assumptions for Warrants (Details) link:calculationLink link:definitionLink link:presentationLink 995605 - Disclosure - Note M - Equity - Summary of Warrant Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995606 - Disclosure - Note N - Stock Options (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995607 - Disclosure - Note N - Stock Options - Option Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995608 - Disclosure - Note N - Stock Options - Options Outstanding and Exercisable (Details) link:calculationLink link:definitionLink link:presentationLink 995609 - Disclosure - Note O - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995610 - Disclosure - Note O - Income Taxes - Components of Net Loss (Details) link:calculationLink link:definitionLink link:presentationLink 995611 - Disclosure - Note O - Income Taxes - Provision for Income Tax Benefits (Details) link:calculationLink link:definitionLink link:presentationLink 995612 - Disclosure - Note O - Income Taxes - Components of Deferred Taxes (Details) link:calculationLink link:definitionLink link:presentationLink 995613 - Disclosure - Note O - Income Taxes - Reconciliation of the Effective Income Tax Rate to US Federal Statutory Income Tax Rate (Details) link:calculationLink link:definitionLink link:presentationLink 995614 - Disclosure - Note P - Savings Plans (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995615 - Disclosure - Note Q - Earnings Per Share (EPS) (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995616 - Disclosure - Note Q - Earnings Per Share (EPS) - Securities Excluded From the Diluted Per Share Calculation (Details) link:calculationLink link:definitionLink link:presentationLink 995617 - Disclosure - Note R - Segments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995618 - Disclosure - Note S - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink