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Note 11 - Retirement Plans (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Cost Recognized (in Dollars) $ 16,300,000us-gaap_DefinedContributionPlanCostRecognized $ 18,600,000us-gaap_DefinedContributionPlanCostRecognized $ 17,000,000us-gaap_DefinedContributionPlanCostRecognized
100% for first 4% Contributed [Member] | U.S. Segment [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember
/ us-gaap_StatementScenarioAxis
= cveo_The100ForFirst4ContributedMember		    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember
/ us-gaap_StatementScenarioAxis
= cveo_The100ForFirst4ContributedMember		    
50% for the next 2% Contributed [Member] | U.S. Segment [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 2.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember
/ us-gaap_StatementScenarioAxis
= cveo_The50ForTheNext2ContributedMember		    
Defined Contribution Plan, Employer Matching Contribution, Percent of Match 50.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember
/ us-gaap_StatementScenarioAxis
= cveo_The50ForTheNext2ContributedMember		    
Canadian Segment [Member] | Deferred Profit Sharing Plan [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 5.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_DefinedContributionPlanNameAxis
= cveo_DeferredProfitSharingPlanMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_CanadianSegmentMember		    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount (in Dollars) 12,465us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount
/ us-gaap_DefinedContributionPlanNameAxis
= cveo_DeferredProfitSharingPlanMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_CanadianSegmentMember		    
Deferred Compensation Arrangement with Individual, Requisite Service Period 2 years    
Canadian Segment [Member] | Group Registered Retirement Savings Plan [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_DefinedContributionPlanNameAxis
= cveo_GroupRegisteredRetirementSavingsPlanMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_CanadianSegmentMember		    
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount (in Dollars) $ 24,270us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount
/ us-gaap_DefinedContributionPlanNameAxis
= cveo_GroupRegisteredRetirementSavingsPlanMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_CanadianSegmentMember		    
Australian Segment [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 9.50%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_AustralianSegmentMember		    
U.S. Segment [Member] | Minimum [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 1.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember		    
U.S. Segment [Member] | Maximum [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 75.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember		    
U.S. Segment [Member]      
Note 11 - Retirement Plans (Details) [Line Items]      
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember		    
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage 20.00%us-gaap_DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage
/ us-gaap_StatementBusinessSegmentsAxis
= cveo_USSegmentMember