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Note 1 - Principal Business Activity and Summary of Significant Accounting Policies (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2014
Note 1 - Principal Business Activity and Summary of Significant Accounting Policies (Details) [Line Items]        
Loss Contingency, Estimate of Possible Loss, Percentage       41.00%cvu_LossContingencyEstimateOfPossibleLossPercentage
Loss Contingency, Estimate of Possible Loss       $ 44,700,000us-gaap_LossContingencyEstimateOfPossibleLoss
Loss Contingency, Estimate of Change in Cost of Sales       2,600,000cvu_LossContingencyEstimateOfChangeInCostOfSales
Number of Financial Institutions with which Cash is Maintained 2cvu_NumberOfFinancialInstitutionsWithWhichCashIsMaintained      
Cash, Uninsured Amount 1,110,000us-gaap_CashUninsuredAmount 2,112,000us-gaap_CashUninsuredAmount    
Deferred Gain (Loss) on Derivative, Net (14,700)cvu_DeferredGainLossOnDerivativeNet (32,000)cvu_DeferredGainLossOnDerivativeNet    
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax 9,716us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax 21,115us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax    
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Tax Effect 5,000cvu_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesTaxEffect 10,877cvu_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesTaxEffect    
Weighted Average Number Diluted Shares Outstanding Adjustment (in Shares) 0us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 381,919us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment 415,517us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares)   116,292us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 124,217us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount  
Interest Rate Swap [Member] | Other Noncurrent Liabilities [Member]        
Note 1 - Principal Business Activity and Summary of Significant Accounting Policies (Details) [Line Items]        
Derivative Liability $ 14,716us-gaap_DerivativeLiabilities
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember		 $ 31,992us-gaap_DerivativeLiabilities
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherNoncurrentLiabilitiesMember
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember