000 - Document - Document And Entity Information link:calculationLink link:definitionLink link:presentationLink 001 - Statement - Condensed Consolidated Statements of Operations (Unaudited) link:calculationLink link:definitionLink link:presentationLink 002 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) link:calculationLink link:definitionLink link:presentationLink 003 - Statement - Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Condensed Consolidated Statement of Shareholders’ 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 - Description of Business link:calculationLink link:definitionLink link:presentationLink 007 - Disclosure - Note 2 - Basis of Presentation link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 3 - Recent Accounting Pronouncements link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 4 - Cash, Cash Equivalents and Restricted Cash link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 5 - Revenues link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 6 - Property and Equipment link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 7 - Leases link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 8 - Basic Net Loss Per Share link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 9 - Term Loans and Line of Credit Agreements link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 10 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 11 - Long-term Incentive Plan link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 12 - Legal Matters link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 13 - Business Segment Information link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 14 - Certain Relationships and Related Transactions link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 15 - Injection Wells Suspension link:calculationLink link:definitionLink link:presentationLink 995445 - Disclosure - Note 4 - Cash, Cash Equivalents and Restricted Cash (Tables) link:calculationLink link:definitionLink link:presentationLink 995446 - Disclosure - Note 5 - Revenues (Tables) link:calculationLink link:definitionLink link:presentationLink 995447 - Disclosure - Note 6 - Property and Equipment (Tables) link:calculationLink link:definitionLink link:presentationLink 995448 - Disclosure - Note 7 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995449 - Disclosure - Note 9 - Term Loans and Line of Credit Agreements (Tables) link:calculationLink link:definitionLink link:presentationLink 995450 - Disclosure - Note 11 - Long-term Incentive Plan (Tables) link:calculationLink link:definitionLink link:presentationLink 995451 - Disclosure - Note 13 - Business Segment Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995452 - Disclosure - Note 4 - Cash, Cash Equivalents and Restricted Cash - Cash, Cash Equivalents and Restricted Cash (Details) link:calculationLink link:definitionLink link:presentationLink 995453 - Disclosure - Note 5 - Revenues (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995454 - Disclosure - Note 5 - Revenues - Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 995455 - Disclosure - Note 5 - Revenues - Allowance for Doubtful Accounts (Details) link:calculationLink link:definitionLink link:presentationLink 995456 - Disclosure - Note 5 - Revenues - Contract Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995457 - Disclosure - Note 6 - Property and Equipment (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995458 - Disclosure - Note 6 - Property and Equipment - Summary of Property and Equipment (Details) link:calculationLink link:definitionLink link:presentationLink 995459 - Disclosure - Note 7 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995460 - Disclosure - Note 7 - Leases - Operating Leases Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995461 - Disclosure - Note 7 - Leases - Lease Cost (Details) link:calculationLink link:definitionLink link:presentationLink 995462 - Disclosure - Note 7 - Leases - Future Commitments Under Long-term Leases (Details) link:calculationLink link:definitionLink link:presentationLink 995463 - Disclosure - Note 8 - Basic Net Loss Per Share (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995464 - Disclosure - Note 9 - Term Loans and Line of Credit Agreements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995465 - Disclosure - Note 9 - Term Loans and Line of Credit Agreements - Summary of Term Loan and Line of Credit Agreements (Details) link:calculationLink link:definitionLink link:presentationLink 995466 - Disclosure - Note 9 - Term Loans and Line of Credit Agreements - Future Maturities of Long-term Debt (Details) link:calculationLink link:definitionLink link:presentationLink 995467 - Disclosure - Note 10 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995468 - Disclosure - Note 11 - Long-term Incentive Plan (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995469 - Disclosure - Note 11 - Long-term Incentive Plan - Period and Predetermined Stock Price Needed for Vesting (Details) link:calculationLink link:definitionLink link:presentationLink 995470 - Disclosure - Note 13 - Business Segment Information (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995471 - Disclosure - Note 13 - Business Segment Information - Segment Reporting Information (Details) link:calculationLink link:definitionLink link:presentationLink 995472 - Disclosure - Note 13 - Business Segment Information - Segment Reporting Asset Information (Details) link:calculationLink link:definitionLink link:presentationLink 995473 - Disclosure - Note 14 - Certain Relationships and Related Transactions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995474 - Disclosure - Note 15 - Injection Wells Suspension (Details Textual) link:calculationLink link:definitionLink link:presentationLink