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 Comprehensive Income and Loss (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Condensed Consolidated Statements of Cash Flows (Unaudited) link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 1 - Nature of Operations, Basis of Presentation and Company Conditions link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 2 - Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 3 - Discontinued Operations and Sale of a Business link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 4 - Revenue From Contracts With Customers link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 5 - Deposits link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 6 - Inventories link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 7 - Investments link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 8 - Leases link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 9 - Stock-based Payments for Compensation, Services and Royalties link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 10 - Segment Reporting link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 11 - Recent Accounting Pronouncements link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 12 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 13 - Loss Per Common Share link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 14 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 021 - Disclosure - Note 15 - Accumulated Other Comprehensive Loss link:calculationLink link:definitionLink link:presentationLink 022 - Disclosure - Note 16 - Notes Payable and Line of Credit link:calculationLink link:definitionLink link:presentationLink 023 - Disclosure - Note 17 - Concentrations link:calculationLink link:definitionLink link:presentationLink 024 - Disclosure - Note 18 - Other Equity Transactions link:calculationLink link:definitionLink link:presentationLink 025 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC link:calculationLink link:definitionLink link:presentationLink 026 - Disclosure - Note 20 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 027 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 028 - Disclosure - Note 1 - Nature of Operations, Basis of Presentation and Company Conditions (Tables) link:calculationLink link:definitionLink link:presentationLink 029 - Disclosure - Note 2 - Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 030 - Disclosure - Note 3 - Discontinued Operations and Sale of a Business (Tables) link:calculationLink link:definitionLink link:presentationLink 031 - Disclosure - Note 4 - Revenue From Contracts With Customers (Tables) link:calculationLink link:definitionLink link:presentationLink 032 - Disclosure - Note 6 - Inventories (Tables) link:calculationLink link:definitionLink link:presentationLink 033 - Disclosure - Note 7 - Investments (Tables) link:calculationLink link:definitionLink link:presentationLink 034 - Disclosure - Note 8 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 035 - Disclosure - Note 10 - Segment Reporting (Tables) link:calculationLink link:definitionLink link:presentationLink 036 - Disclosure - Note 12 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 037 - Disclosure - Note 13 - Loss Per Common Share (Tables) link:calculationLink link:definitionLink link:presentationLink 038 - Disclosure - Note 15 - Accumulated Other Comprehensive Loss (Tables) link:calculationLink link:definitionLink link:presentationLink 039 - Disclosure - Note 16 - Notes Payable and Line of Credit (Tables) link:calculationLink link:definitionLink link:presentationLink 040 - Disclosure - Note 17 - Concentrations (Tables) link:calculationLink link:definitionLink link:presentationLink 041 - Disclosure - Note 18 - Other Equity Transactions (Tables) link:calculationLink link:definitionLink link:presentationLink 042 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC (Tables) link:calculationLink link:definitionLink link:presentationLink 043 - Disclosure - Note 1 - Nature of Operations, Basis of Presentation and Company Conditions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 044 - Disclosure - Note 1 - Nature of Operations, Basis of Presentation and Company Conditions - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) link:calculationLink link:definitionLink link:presentationLink 045 - Disclosure - Note 1 - Nature of Operations, Basis of Presentation and Company Conditions - Intangible Assets (Details) link:calculationLink link:definitionLink link:presentationLink 046 - Disclosure - Note 2 - Summary of Significant Accounting Policies - Update - Allowance for Credit Losses (Details) link:calculationLink link:definitionLink link:presentationLink 047 - Disclosure - Note 3 - Discontinued Operations and Sale of a Business (Details Textual) link:calculationLink link:definitionLink link:presentationLink 048 - Disclosure - Note 3 - Discontinued Operations and Sale of a Business - Schedule of Discontinued Operations for Income Statement and Balance Sheet Disclosures (Details) link:calculationLink link:definitionLink link:presentationLink 049 - Disclosure - Note 4 - Revenue From Contracts With Customers (Details Textual) link:calculationLink link:definitionLink link:presentationLink 050 - Disclosure - Note 4 - Revenue From Contracts With Customers - Contract Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 051 - Disclosure - Note 4 - Revenue From Contracts With Customers - Revenues Disaggregated (Details) link:calculationLink link:definitionLink link:presentationLink 052 - Disclosure - Note 5 - Deposits (Details Textual) link:calculationLink link:definitionLink link:presentationLink 053 - Disclosure - Note 6 - Inventories (Details Textual) link:calculationLink link:definitionLink link:presentationLink 054 - Disclosure - Note 6 - Inventories - Inventory (Details) link:calculationLink link:definitionLink link:presentationLink 055 - Disclosure - Note 7 - Investments (Details Textual) link:calculationLink link:definitionLink link:presentationLink 056 - Disclosure - Note 7 - Investments - Summary of Unaudited Financial Statements of Affiliate (Details) link:calculationLink link:definitionLink link:presentationLink 057 - Disclosure - Note 7 - Investments - Summary of Unaudited Financial Statements of Affiliate (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 058 - Disclosure - Note 8 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 059 - Disclosure - Note 8 - Leases - Future Minimum Operating Lease Obligations (Details) link:calculationLink link:definitionLink link:presentationLink 060 - Disclosure - Note 8 - Leases - Lease Cost and Other Lease Information (Details) link:calculationLink link:definitionLink link:presentationLink 061 - Disclosure - Note 9 - Stock-based Payments for Compensation, Services and Royalties (Details Textual) link:calculationLink link:definitionLink link:presentationLink 062 - Disclosure - Note 10 - Segment Reporting (Details Textual) link:calculationLink link:definitionLink link:presentationLink 063 - Disclosure - Note 10 - Segment Reporting - Segment Activity (Details) link:calculationLink link:definitionLink link:presentationLink 064 - Disclosure - Note 10 - Segment Reporting - Revenue by Country (Details) link:calculationLink link:definitionLink link:presentationLink 065 - Disclosure - Note 12 - Fair Value Measurements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 066 - Disclosure - Note 12 - Fair Value Measurements - Fair Value Hierarchy for Cash Equivalents and Marketable Securities (Details) link:calculationLink link:definitionLink link:presentationLink 067 - Disclosure - Note 12 - Fair Value Measurements - Reconciliation of Changes in Fair Value (Details) link:calculationLink link:definitionLink link:presentationLink 068 - Disclosure - Note 13 - Loss Per Common Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 069 - Disclosure - Note 13 - Loss Per Common Share - Calculation of Basic and Diluted Earnings Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 070 - Disclosure - Note 14 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 071 - Disclosure - Note 15 - Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss (Details) link:calculationLink link:definitionLink link:presentationLink 072 - Disclosure - Note 16 - Notes Payable and Line of Credit (Details Textual) link:calculationLink link:definitionLink link:presentationLink 073 - Disclosure - Note 16 - Notes Payable and Line of Credit - Summary of Debt (Details) link:calculationLink link:definitionLink link:presentationLink 074 - Disclosure - Note 17 - Concentrations (Details Textual) link:calculationLink link:definitionLink link:presentationLink 075 - Disclosure - Note 17 - Concentrations - Concentration Risk (Details) link:calculationLink link:definitionLink link:presentationLink 076 - Disclosure - Note 18- Other Equity Transactions - Shares Issued Recorded In Expense Using Grant-date Fair Value (Details) link:calculationLink link:definitionLink link:presentationLink 077 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC (Details Textual) link:calculationLink link:definitionLink link:presentationLink 078 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC - Purchase Consideration (Details) link:calculationLink link:definitionLink link:presentationLink 079 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC - Purchase Consideration (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 080 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC - Purchase Price Allocation (Details) link:calculationLink link:definitionLink link:presentationLink 081 - Disclosure - Note 19 - Acquisition of Reach Construction Group, LLC - Pro Forma Information (Details) link:calculationLink link:definitionLink link:presentationLink 082 - Disclosure - Note 20 - Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink