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 link:calculationLink link:definitionLink link:presentationLink 004 - Statement - Consolidated Statements of Changes in Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 005 - Statement - Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 006 - Statement - Consolidated Statements of Cash Flows link:calculationLink link:definitionLink link:presentationLink 995554 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies link:calculationLink link:definitionLink link:presentationLink 995555 - Disclosure - Note 2 - Acquisitions and Divestitures link:calculationLink link:definitionLink link:presentationLink 995556 - Disclosure - Note 3 - Revenue From Contracts with Customers link:calculationLink link:definitionLink link:presentationLink 995557 - Disclosure - Note 4 - Leases link:calculationLink link:definitionLink link:presentationLink 995558 - Disclosure - Note 5 - Oil and Natural Gas Producing Activities link:calculationLink link:definitionLink link:presentationLink 995559 - Disclosure - Note 6 - Debt link:calculationLink link:definitionLink link:presentationLink 995560 - Disclosure - Note 7 - Commodity Derivatives link:calculationLink link:definitionLink link:presentationLink 995561 - Disclosure - Note 8 - Asset Retirement Obligations link:calculationLink link:definitionLink link:presentationLink 995562 - Disclosure - Note 9 - Commitments, Contingencies, and Related Party Transactions link:calculationLink link:definitionLink link:presentationLink 995563 - Disclosure - Note 10 - Shareholders' Equity link:calculationLink link:definitionLink link:presentationLink 995564 - Disclosure - Note 11 - Income Taxes link:calculationLink link:definitionLink link:presentationLink 995565 - Disclosure - Note 12 - Income (Loss) Per Share link:calculationLink link:definitionLink link:presentationLink 995566 - Disclosure - Note 13 - Fair Value Measurements link:calculationLink link:definitionLink link:presentationLink 995567 - Disclosure - Note 14 - Other Current Assets and Accounts Payable and Accrued Liabilities link:calculationLink link:definitionLink link:presentationLink 995568 - Disclosure - Note 15 - Supplemental Disclosures of Cash Flow Information link:calculationLink link:definitionLink link:presentationLink 995569 - Disclosure - Note 16 - Subsequent Events link:calculationLink link:definitionLink link:presentationLink 995570 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) link:calculationLink link:definitionLink link:presentationLink 995571 - Disclosure - Significant Accounting Policies (Policies) link:calculationLink link:definitionLink link:presentationLink 995572 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies (Tables) link:calculationLink link:definitionLink link:presentationLink 995573 - Disclosure - Note 2 - Acquisitions and Divestitures (Tables) link:calculationLink link:definitionLink link:presentationLink 995574 - Disclosure - Note 3 - Revenue From Contracts with Customers (Tables) link:calculationLink link:definitionLink link:presentationLink 995575 - Disclosure - Note 4 - Leases (Tables) link:calculationLink link:definitionLink link:presentationLink 995576 - Disclosure - Note 6 - Debt (Tables) link:calculationLink link:definitionLink link:presentationLink 995577 - Disclosure - Note 7 - Commodity Derivatives (Tables) link:calculationLink link:definitionLink link:presentationLink 995578 - Disclosure - Note 8 - Asset Retirement Obligations (Tables) link:calculationLink link:definitionLink link:presentationLink 995579 - Disclosure - Note 10 - Shareholders' Equity (Tables) link:calculationLink link:definitionLink link:presentationLink 995580 - Disclosure - Note 11 - Income Taxes (Tables) link:calculationLink link:definitionLink link:presentationLink 995581 - Disclosure - Note 12 - Income (Loss) Per Share (Tables) link:calculationLink link:definitionLink link:presentationLink 995582 - Disclosure - Note 13 - Fair Value Measurements (Tables) link:calculationLink link:definitionLink link:presentationLink 995583 - Disclosure - Note 14 - Other Current Assets and Accounts Payable and Accrued Liabilities (Tables) link:calculationLink link:definitionLink link:presentationLink 995584 - Disclosure - Note 15 - Supplemental Disclosures of Cash Flow Information (Tables) link:calculationLink link:definitionLink link:presentationLink 995585 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) (Tables) link:calculationLink link:definitionLink link:presentationLink 995586 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995587 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies - Concentration of Credit Risk (Details) link:calculationLink link:definitionLink link:presentationLink 995588 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies - Schedule of Property, Plant, and Equipment by Useful Life (Details) link:calculationLink link:definitionLink link:presentationLink 995589 - Disclosure - Note 1 - Organization, Operations and Significant Accounting Policies - Schedule of Error Corrections and Prior Period Adjustments (Details) link:calculationLink link:definitionLink link:presentationLink 995590 - Disclosure - Note 2 - Acquisitions and Divestitures (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995591 - Disclosure - Note 2 - Acquisitions - Asset Acquisitions (Details) link:calculationLink link:definitionLink link:presentationLink 995592 - Disclosure - Note 2 - Acquisitions - Asset Acquisitions (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995593 - Disclosure - Note 3 - Revenue from Contracts with Customers - Disaggregation of Revenue (Details) link:calculationLink link:definitionLink link:presentationLink 995594 - Disclosure - Note 4 - Leases (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995595 - Disclosure - Note 4 - Leases - Lease Cost (Details) link:calculationLink link:definitionLink link:presentationLink 995596 - Disclosure - Note 4 - Leases - Schedule of Operating Lease Maturity (Details) link:calculationLink link:definitionLink link:presentationLink 995597 - Disclosure - Note 5 - Oil and Natural Gas Producing Activities (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995598 - Disclosure - Note 6 - Debt (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995599 - Disclosure - Note 6 - Debt - Schedule of Debt (Details) link:calculationLink link:definitionLink link:presentationLink 995600 - Disclosure - Note 7 - Commodity Derivatives (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995601 - Disclosure - Note 7 - Commodity Derivatives - Schedule of Derivative Gains (Details) link:calculationLink link:definitionLink link:presentationLink 995602 - Disclosure - Note 8 - Asset Retirement Obligations (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995603 - Disclosure - Note 8 - Asset Retirement Obligation - Schedule of Asset Retirement Obligations (Details) link:calculationLink link:definitionLink link:presentationLink 995604 - Disclosure - Note 10 - Shareholders' Equity (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995605 - Disclosure - Note 10 - Shareholders' Equity - Restricted Stock Activity (Details) link:calculationLink link:definitionLink link:presentationLink 995606 - Disclosure - Note 10 - Shareholders' Equity - Stock Compensation Expense (Details) link:calculationLink link:definitionLink link:presentationLink 995607 - Disclosure - Note 10 - Shareholders' Equity - Activity in Share Repurchase Program (Details) link:calculationLink link:definitionLink link:presentationLink 995608 - Disclosure - Note 11 - Income Taxes (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995609 - Disclosure - Note 11 - Income Taxes - Schedule of Components of Income Tax (Details) link:calculationLink link:definitionLink link:presentationLink 995610 - Disclosure - Note 11 - Income Taxes - Effective Income Tax Reconciliation (Details) link:calculationLink link:definitionLink link:presentationLink 995611 - Disclosure - Note 11 - Income Taxes - Components of Deferred Tax Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995612 - Disclosure - Note 11 - Income Taxes - Schedule of Income Taxes Paid (Details) link:calculationLink link:definitionLink link:presentationLink 995613 - Disclosure - Note 12 - Income (Loss) Per Share - Schedule of Loss Per Share (Details) link:calculationLink link:definitionLink link:presentationLink 995614 - Disclosure - Note 12 - Income (Loss) Per Share - Schedule of Antidilutive Securities (Details) link:calculationLink link:definitionLink link:presentationLink 995615 - Disclosure - Note 13 - Fair Value Measurements (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995616 - Disclosure - Note 13 - Fair Value Measurements - Schedule of Fair Value Assets Measured on Recurring Basis (Details) link:calculationLink link:definitionLink link:presentationLink 995617 - Disclosure - Note 14 - Other Current Assets and Accounts Payable and Accrued Liabilities - Schedule of Other Current Assets (Details) link:calculationLink link:definitionLink link:presentationLink 995618 - Disclosure - Note 14 - Other Current Assets and Accounts Payable and Accrued Liabilities - Schedule of Other Current Assets (Details) (Parentheticals) link:calculationLink link:definitionLink link:presentationLink 995619 - Disclosure - Note 14 - Other Current Assets and Accounts Payable and Accrued Liabilities - Schedule of Accounts Payable and Accrued Liabilities (Details) link:calculationLink link:definitionLink link:presentationLink 995620 - Disclosure - Note 15 - Supplemental Disclosures of Cash Flow Information - Supplemental Disclosures of Cash Flow Information (Details) link:calculationLink link:definitionLink link:presentationLink 995621 - Disclosure - Note 16 - Subsequent Events (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995622 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) (Details Textual) link:calculationLink link:definitionLink link:presentationLink 995623 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Capitalized Oil and Gas Costs Incurred (Details) link:calculationLink link:definitionLink link:presentationLink 995624 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Capitalized Oil and Gas Costs (Details) link:calculationLink link:definitionLink link:presentationLink 995625 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Results of Operations from Oil and Gas Producing Activities (Details) link:calculationLink link:definitionLink link:presentationLink 995626 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Proved Reserves (Details) link:calculationLink link:definitionLink link:presentationLink 995627 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Standardized Oil and Gas Measures (Details) link:calculationLink link:definitionLink link:presentationLink 995628 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Discounted Future Cash Flows From Oil and Gas Reserves (Details) link:calculationLink link:definitionLink link:presentationLink 995629 - Disclosure - Note 17 - Supplemental Oil and Natural Gas Information (Unaudited) - Schedule of Changes in Standardized Measure (Details) link:calculationLink link:definitionLink link:presentationLink