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) INCOME
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0035 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (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 - SHARE-BASED PAYMENTS
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1040 - Disclosure - REAL ESTATE HELD FOR SALE
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1050 - Disclosure - INVESTMENTS
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1060 - Disclosure - LONG-TERM DEBT
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1070 - Disclosure - RETIREMENT PLANS
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1080 - Disclosure - INCOME TAXES
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1090 - Disclosure - SEGMENT INFORMATION
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1100 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME
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1110 - Disclosure - FAIR VALUE MEASUREMENTS
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1120 - Disclosure - INFORMATION RELATING TO THE CONSOLIDATED STATEMENTS OF CASH FLOWS
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1130 - Disclosure - SUBSEQUENT EVENT
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8000 - Disclosure - ACCOUNTS RECEIVABLE AND CONTRACT COSTS
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8010 - Disclosure - PROPERTY AND EQUIPMENT AND ASSET RETIREMENT OBLIGATION
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8020 - Disclosure - INCENTIVE COMPENSATION PLAN
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8030 - Disclosure - REDUCTION OF CARRYING VALUE OF ASSETS
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8040 - Disclosure - COMMITMENTS AND CONTINGENCIES
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8050 - Disclosure - CONCENTRATIONS OF CREDIT RISK
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8060 - Disclosure - SUMMARY OF SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)
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8070 - Disclosure - SUPPLEMENTARY OIL AND NATURAL GAS INFORMATION (UNAUDITED)
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8080 - Disclosure - INVESTMENT IN JOINT VENTURES
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8090 - Disclosure - INVESTMENT IN LAND INTERESTS
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8100 - Disclosure - OIL AND NATURAL GAS PROPERTIES
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8110 - Disclosure - SHARE REPURCHASE PROGRAM
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8120 - Disclosure - RELATED PARTY TRANSACTIONS
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