0000 - Document - Document and Entity Information
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0010 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS
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0015 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)
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0020 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
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0030 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
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0035 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Parenthetical)
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0040 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
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0050 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
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0055 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical)
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1010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
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1020 - Disclosure - LOSS PER COMMON SHARE
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1030 - Disclosure - REAL ESTATE HELD FOR SALE
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1040 - Disclosure - INVESTMENTS
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1050 - Disclosure - LONG-TERM DEBT
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1060 - Disclosure - RETIREMENT PLANS
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1070 - Disclosure - INCOME TAXES
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1080 - Disclosure - SEGMENT INFORMATION
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1090 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME
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1100 - Disclosure - FAIR VALUE MEASUREMENTS
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1120 - Disclosure - INFORMATION RELATING TO THE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
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1130 - Disclosure - OIL AND NATURAL GAS PROPERTIES
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1140 - Disclosure - SUBSEQUENT EVENTS
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2010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)
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3020 - Disclosure - LOSS PER COMMON SHARE (Tables)
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3040 - Disclosure - INVESTMENTS (Tables)
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3050 - Disclosure - LONG-TERM DEBT (Tables)
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3060 - Disclosure - RETIREMENT PLANS (Tables)
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3070 - Disclosure - INCOME TAXES (Tables)
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3080 - Disclosure - SEGMENT INFORMATION (Tables)
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3090 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)
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3100 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)
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3120 - Disclosure - INFORMATION RELATING TO THE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Tables)
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link:definitionLink
4010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)
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link:definitionLink
4020 - Disclosure - LOSS PER COMMON SHARE (Details)
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4030 - Disclosure - REAL ESTATE HELD FOR SALE (Details)
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4040 - Disclosure - INVESTMENTS (Details)
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4050 - Disclosure - LONG-TERM DEBT (Details)
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4060 - Disclosure - RETIREMENT PLANS (Details)
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4070 - Disclosure - INCOME TAXES (Details)
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4080 - Disclosure - SEGMENT INFORMATION (Details)
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4090 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Details)
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4100 - Disclosure - FAIR VALUE MEASUREMENTS (Details)
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4120 - Disclosure - INFORMATION RELATING TO THE CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Details)
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4130 - Disclosure - OIL AND NATURAL GAS PROPERTIES (Details)
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8000 - Disclosure - REDUCTION OF CARRYING VALUE OF ASSETS
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8010 - Disclosure - INVESTMENT IN JOINT VENTURES
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8020 - Disclosure - INVESTMENT IN LAND INTERESTS
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8030 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables)
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8040 - Disclosure - SHARE REPURCHASE PROGRAM
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8050 - Disclosure - RELATED PARTY TRANSACTIONS
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8060 - Disclosure - SHARE-BASED PAYMENTS
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8070 - Disclosure - ACCOUNTS RECEIVABLE AND CONTRACT COSTS
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8080 - Disclosure - PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION
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8090 - Disclosure - INCENTIVE COMPENSATION PLAN
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8100 - Disclosure - SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) (Tables)
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1110 - Disclosure - COMMITMENTS AND CONTINGENCIES
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8120 - Disclosure - CONCENTRATIONS OF CREDIT RISK
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8130 - Disclosure - SUMMARY OF SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
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8140 - Disclosure - SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED)
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8150 - Disclosure - SHARE-BASED PAYMENTS (Tables)
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8160 - Disclosure - SHARE-BASED PAYMENTS (Details)
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8170 - Disclosure - ACCOUNTS RECEIVABLE AND CONTRACT COSTS (Tables)
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8180 - Disclosure - ACCOUNTS RECEIVABLE AND CONTRACT COSTS (Details)
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8190 - Disclosure - ACCOUNTS RECEIVABLE AND CONTRACT COSTS (Details) (Calc 2)
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8200 - Disclosure - SHARE-BASED PAYMENTS (Details 2)
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8210 - Disclosure - LONG-TERM DEBT (Details 2)
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8220 - Disclosure - RETIREMENT PLANS (Details 2)
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8230 - Disclosure - PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION (Tables)
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8240 - Disclosure - PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION (Details)
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8250 - Disclosure - INCOME TAXES (Details 2)
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8260 - Disclosure - INCOME TAXES (Details) (Calc 2)
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8270 - Disclosure - INCENTIVE COMPENSATION PLAN (Details)
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8280 - Disclosure - SEGMENT INFORMATION (Details 2)
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8290 - Disclosure - SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED) (Details)
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8300 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details 2)
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8310 - Disclosure - CONCENTRATIONS OF CREDIT RISK (Details)
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8110 - Disclosure - SUBSEQUENT EVENT (Details)
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4110 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)
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