0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONSOLIDATED BALANCE SHEETS (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952156 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 9952157 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - EARNINGS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - ACQUISITIONS AND DISPOSITIONS link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - STOCK REPURCHASE link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - ASSET RETIREMENT OBLIGATIONS link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - PROPERTY, PLANT AND EQUIPMENT link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - REVOLVING CREDIT FACILITIES link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - OTHER ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - LONG-TERM DEBT link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - PENSION link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 9952176 - Disclosure - DERIVATIVE INSTRUMENTS link:presentationLink link:calculationLink link:definitionLink 9952177 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952178 - Disclosure - SEGMENT INFORMATION link:presentationLink link:calculationLink link:definitionLink 9952179 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) link:presentationLink link:calculationLink link:definitionLink 9952180 - Disclosure - Schedule II - Valuation and Qualifying Accounts link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - EARNINGS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - ASSET RETIREMENT OBLIGATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - OTHER ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - LONG-TERM DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - PENSION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS - (Tables) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - DERIVATIVE INSTRUMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - SEGMENT INFORMATION (Tables) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) (Tables) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Schedule of Allowance for Credit Losses (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Impairment of Proved and Unproved Properties (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Impairment of Goodwill and Definite-Lived Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES - Investment Plan (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - EARNINGS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - EARNINGS PER SHARE - Schedule of Anti-Dilutive Options and Units Excluded from Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - EARNINGS PER SHARE - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - EARNINGS PER SHARE - Schedule of Computation of Basic and Diluted (Loss) (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - EARNINGS PER SHARE - Schedule of Shares of Common Stock Outstanding (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - ACQUISITIONS AND DISPOSITIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - STOCK REPURCHASE (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - INCOME TAXES - Schedule of Income Tax (Benefit) Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - INCOME TAXES - Schedule of Net Deferred Tax Assets/Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - INCOME TAXES - Schedule of Effective Tax Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - INCOME TAXES - Schedule of Reconciliation of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - INCOME TAXES - Income Taxes Paid (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - ASSET RETIREMENT OBLIGATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Schedule of Property, Plant and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - PROPERTY, PLANT AND EQUIPMENT - Schedule of Oil and Gas, Full Cost Method, Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Carrying Amount and Accumulated Amortization of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - REVOLVING CREDIT FACILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - OTHER ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - LONG-TERM DEBT - Schedule of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - LONG-TERM DEBT - Maturities of Long-Term Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - LONG-TERM DEBT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - LONG-TERM DEBT - Schedule of Convertible Debt (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - LONG-TERM DEBT - Schedule of Interest (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - LEASES - Schedule of Components of Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - LEASES - Schedule of Balance Sheet Information (Details) (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - LEASES - Schedule of Supplemental Cash Flow Information (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - LEASES - Schedule of Maturity of Lease Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - LEASES - Schedule of Maturity of Lease Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - LEASES - Schedule of Terms and Discount Rates (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - PENSION - Schedule of Reconciliation of Changed in Benefit Obligations, Plan Assets, and Funded Status of Pension Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - PENSION - Schedule of Components of Net Periodic Benefit Cost (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - PENSION - Schedule of Accumulated Benefit Obligation in Excess of Plan Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - PENSION - Schedule of Weighted Average Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - PENSION - Schedule of Expected Future Benefit Payment (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Options Granted, Assumptions and Weighted Average Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Stock and Performance Options Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Restricted and Performance Stock Unit Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS - Schedules of Concentration of Risk, by Risk Factor (Details) link:presentationLink link:calculationLink link:definitionLink 9955581 - Disclosure - CONCENTRATION OF CREDIT RISK AND MAJOR CUSTOMERS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955582 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value, Assets Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955583 - Disclosure - FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Fair Value, Assets and Liabilities Measured on Nonrecurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955584 - Disclosure - DERIVATIVE INSTRUMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955585 - Disclosure - DERIVATIVE INSTRUMENTS - Schedule of Notional Amounts of Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955586 - Disclosure - DERIVATIVE INSTRUMENTS - Schedule of Fair Value of Derivative Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955587 - Disclosure - DERIVATIVE INSTRUMENTS - Schedule of Effect of Derivative Instrument on Statement of Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955588 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955589 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - Schedule of Maximum Potential Total of Future Payments Under Commitment Instruments (Details) link:presentationLink link:calculationLink link:definitionLink 9955590 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES - Schedule of Unrecorded Unconditional Purchase Obligation (Details) link:presentationLink link:calculationLink link:definitionLink 9955591 - Disclosure - SEGMENT INFORMATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955592 - Disclosure - SEGMENT INFORMATION - Schedule of Industry Segment Results (Details) link:presentationLink link:calculationLink link:definitionLink 9955593 - Disclosure - SEGMENT INFORMATION - Schedule of Reconciliation of Segment Information, Revenue and Other Income (Details) link:presentationLink link:calculationLink link:definitionLink 9955594 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Capitalized Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955595 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Costs Incurred for Property Acquisition, Exploration and Development (Details) link:presentationLink link:calculationLink link:definitionLink 9955596 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Results of Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955597 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Average Unit Prices and Average Production Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955598 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955599 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Producing Wells, Developed Acreage and Undeveloped Acreage (Details) link:presentationLink link:calculationLink link:definitionLink 9955600 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Proved Undeveloped Reserves (Details) link:presentationLink link:calculationLink link:definitionLink 9955601 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Future Cash Flow of Proved Reserves (Details) link:presentationLink link:calculationLink link:definitionLink 9955602 - Disclosure - SUPPLEMENTAL GAS DATA (unaudited) - Schedule of Change in Standardized Measure of Discounted Future Net Cash Flows (Details) link:presentationLink link:calculationLink link:definitionLink 9955603 - Disclosure - Schedule II - Valuation and Qualifying Accounts (Details) link:presentationLink link:calculationLink link:definitionLink