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 (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 Changes in Stockholders' Equity (Unaudited) link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parentheticals) 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 - Organization and Nature of Operations link:calculationLink link:definitionLink link:presentationLink 008 - Disclosure - Note 2 - Basis of Presentation and Summary of Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 009 - Disclosure - Note 3 - Acquisitions link:calculationLink link:definitionLink link:presentationLink 010 - Disclosure - Note 4 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 011 - Disclosure - Note 5 - Derivative Financial Instruments link:calculationLink link:definitionLink link:presentationLink 012 - Disclosure - Note 6 - Exploratory Well Costs link:calculationLink link:definitionLink link:presentationLink 013 - Disclosure - Note 7 - Long-term Debt link:calculationLink link:definitionLink link:presentationLink 014 - Disclosure - Note 8 - Asset Retirement Obligations link:calculationLink link:definitionLink link:presentationLink 015 - Disclosure - Note 9 - Incentive Plans link:calculationLink link:definitionLink link:presentationLink 016 - Disclosure - Note 10 - Commitments and Contingencies link:calculationLink link:definitionLink link:presentationLink 017 - Disclosure - Note 11 - Related Party Transactions link:calculationLink link:definitionLink link:presentationLink 018 - Disclosure - Note 12 - Major Customers link:calculationLink link:definitionLink link:presentationLink 019 - Disclosure - Note 13 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 020 - Disclosure - Note 14 - Earnings Per Share link:calculationLink link:definitionLink link:presentationLink 021 - Disclosure - Note 15 - Stockholders' Equity link:calculationLink link:definitionLink link:presentationLink 022 - Disclosure - Note 16 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 023 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 024 - Disclosure - Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 025 - Disclosure - Note 4 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 026 - Disclosure - Note 5 - Derivative Financial Instruments (Tables) link:calculationLink link:definitionLink link:presentationLink 027 - Disclosure - Note 6 - Exploratory Well Costs (Tables) link:calculationLink link:definitionLink link:presentationLink 028 - Disclosure - Note 7 - Long-term Debt (Tables) link:calculationLink link:definitionLink link:presentationLink 029 - Disclosure - Note 8 - Asset Retirement Obligations (Tables) link:calculationLink link:definitionLink link:presentationLink 030 - Disclosure - Note 9 - Incentive Plans (Tables) link:calculationLink link:definitionLink link:presentationLink 031 - Disclosure - Note 10 - Commitments and Contingencies (Tables) link:calculationLink link:definitionLink link:presentationLink 032 - Disclosure - Note 13 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 033 - Disclosure - Note 14 - Earnings Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 034 - Disclosure - Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 035 - Disclosure - Note 2 - Basis of Presentation and Summary of Significant Accounting Policies - Other Property and Equipment, Net (Details) link:calculationLink link:definitionLink link:presentationLink 036 - Disclosure - Note 3 - Acquisitions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 037 - Disclosure - Note 4 - Fair Value Measurements - Assets and Liabilities Measured On Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 038 - Disclosure - Note 4 - Fair Value Measurements - Financial Instruments Fair Value (Details) link:calculationLink link:definitionLink link:presentationLink 039 - Disclosure - Note 5 - Derivative Financial Instruments - Summary of the Effect of Derivatives on the Condensed Consolidated Statements of Operations (Details) link:calculationLink link:definitionLink link:presentationLink 040 - Disclosure - Note 5 - Derivative Financial Instruments - Price Risk Derivative Contracts (Details) link:calculationLink link:definitionLink link:presentationLink 041 - Disclosure - Note 5 - Derivative Financial Instruments - Net Derivative Liabilities By Counterparty (Details) link:calculationLink link:definitionLink link:presentationLink 042 - Disclosure - Note 6 - Exploratory Well Costs (Details Textual) link:calculationLink link:definitionLink link:presentationLink 043 - Disclosure - Note 6 - Exploratory Well Costs - Exploratory Well Costs (Details) link:calculationLink link:definitionLink link:presentationLink 044 - Disclosure - Note 7 - Long-term Debt (Details Textual) link:calculationLink link:definitionLink link:presentationLink 045 - Disclosure - Note 7 - Long-term Debt - Long-term Debt (Details) link:calculationLink link:definitionLink link:presentationLink 046 - Disclosure - Note 8 - Asset Retirement Obligations - Asset Retirement Obligations Activity (Details) link:calculationLink link:definitionLink link:presentationLink 047 - Disclosure - Note 9 - Incentive Plans (Details Textual) link:calculationLink link:definitionLink link:presentationLink 048 - Disclosure - Note 9 - Incentive Plans - Number of Shares Available for Grant Pursuant to Long-term Incentive Plan (Details) link:calculationLink link:definitionLink link:presentationLink 049 - Disclosure - Note 9 - Incentive Plans - Stock Options Activity (Details) link:calculationLink link:definitionLink link:presentationLink 050 - Disclosure - Note 10 - Commitments and Contingencies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 051 - Disclosure - Note 10 - Commitments and Contingencies - Operating Lease Obligations (Details) link:calculationLink link:definitionLink link:presentationLink 052 - Disclosure - Note 11 - Related Party Transactions (Details Textual) link:calculationLink link:definitionLink link:presentationLink 053 - Disclosure - Note 12 - Major Customers (Details Textual) link:calculationLink link:definitionLink link:presentationLink 054 - Disclosure - Note 13 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 055 - Disclosure - Note 13 - Income Taxes - Income Tax Benefit and Effective Tax Rate (Details) link:calculationLink link:definitionLink link:presentationLink 056 - Disclosure - Note 13 - Income Taxes - Effective Income Tax Rate Reconciliation (Details) link:calculationLink link:definitionLink link:presentationLink 057 - Disclosure - Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 058 - Disclosure - Note 14 - Earnings Per Share - Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders (Details) link:calculationLink link:definitionLink link:presentationLink 059 - Disclosure - Note 15 - Stockholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 060 - Disclosure - Note 16 - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink