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BUSINESS SEGMENT INFORMATION - Summary of information with respect to RPC's business segments (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Revenues: |  |
Revenues | $ 406,270 us-gaap_SalesRevenueNet | $ 501,692 us-gaap_SalesRevenueNet
Operating profit: |  |
Total operating profit | 6,170 us-gaap_OperatingIncomeLoss | 65,232 us-gaap_OperatingIncomeLoss
Interest expense | (691)us-gaap_InterestExpense | (337)us-gaap_InterestExpense
Interest income | 6 us-gaap_InvestmentIncomeInterest | 4 us-gaap_InvestmentIncomeInterest
Other income, net | 5,789 us-gaap_OtherNonoperatingIncomeExpense | 80 us-gaap_OtherNonoperatingIncomeExpense
Income before income taxes | 11,274 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 64,979 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Depreciation and amortization | 65,976 us-gaap_DepreciationAndAmortization | 55,505 us-gaap_DepreciationAndAmortization
Capital expenditures | 103,492 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | 40,295 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Operating Segments |  |
Revenues: |  |
Revenues | 406,270 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 501,692 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating profit: |  |
Total operating profit | 6,170 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 65,232 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Interest expense | (691)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | (337)us-gaap_InterestExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Interest income | 6 us-gaap_InvestmentIncomeInterest / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 4 us-gaap_InvestmentIncomeInterest / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Other income, net | 5,789 us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 80 us-gaap_OtherNonoperatingIncomeExpense / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Income before income taxes | 11,274 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 64,979 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Depreciation and amortization | 65,976 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 55,505 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Capital expenditures | 103,492 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 40,295 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Identifiable assets | 1,549,980 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember | 1,434,295 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember
Operating Segments | Technical Services |  |
Revenues: |  |
Revenues | 378,093 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember | 466,970 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember
Operating profit: |  |
Total operating profit | 5,862 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember | 64,896 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember
Depreciation and amortization | 57,676 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember | 47,344 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember
Capital expenditures | 96,387 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember | 30,302 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember
Identifiable assets | 1,331,402 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember | 1,180,519 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_TechnicalServicesMember
Operating Segments | Support Services |  |
Revenues: |  |
Revenues | 28,177 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember | 34,722 us-gaap_SalesRevenueNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember
Operating profit: |  |
Total operating profit | 3,907 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember | 7,457 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember
Depreciation and amortization | 8,166 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember | 7,989 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember
Capital expenditures | 6,583 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember | 9,973 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember
Identifiable assets | 141,498 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember | 156,836 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = res_SupportServicesMember
Corporate |  |
Operating profit: |  |
Total operating profit | (4,557)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | (4,889)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Depreciation and amortization | 134 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 172 us-gaap_DepreciationAndAmortization / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Capital expenditures | 522 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 20 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Identifiable assets | 77,080 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 96,940 res_IdentifiableAssets / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember
Gain (loss) on disposition of assets, net |  |
Operating profit: |  |
Total operating profit | $ 958 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember | $ (2,232)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_MaterialReconcilingItemsMember

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