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Note 1 - Summary of Significant Accounting Policies (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Long-Term Investment, Marketable Period 1 year    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities $ 0us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities $ 0us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities $ 0us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities
Number of Major Banks Used by Entity 3cutr_NumberOfMajorBanksUsedByEntity    
Average Maturity Period of Interest Rate of Auction Securities 18 months    
Inventories, Estimated Useful Lives 2 years    
Inventory, Finished Goods, Gross 2,300,000us-gaap_InventoryFinishedGoods 1,800,000us-gaap_InventoryFinishedGoods  
Depreciation 562,000us-gaap_Depreciation 602,000us-gaap_Depreciation 436,000us-gaap_Depreciation
Impairment of Intangible Assets (Excluding Goodwill) 650,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill    
Impairment of Long-Lived Assets Held-for-use 0us-gaap_ImpairmentOfLongLivedAssetsHeldForUse 0us-gaap_ImpairmentOfLongLivedAssetsHeldForUse 0us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Standard Warranty Period 1 year    
Sales Revenue, Services, Net 17,839,000us-gaap_SalesRevenueServicesNet 17,689,000us-gaap_SalesRevenueServicesNet 17,220,000us-gaap_SalesRevenueServicesNet
Advertising Expense $ 1,600,000us-gaap_AdvertisingExpense $ 1,600,000us-gaap_AdvertisingExpense $ 1,300,000us-gaap_AdvertisingExpense
Uncertain Income Tax Position, Minimum Rate 50.00%cutr_UncertainIncomeTaxPositionMinimumRate    
Disclosure on Geographic Areas, Long-Lived Assets in Entity's Country of Domicile, Percent 71.00%cutr_DisclosureOnGeographicAreasLongLivedAssetsInEntitySCountryOfDomicilePercent 83.00%cutr_DisclosureOnGeographicAreasLongLivedAssetsInEntitySCountryOfDomicilePercent  
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | UNITED STATES      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Concentration Risk, Percentage 45.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US
42.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US
41.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= country_US
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member] | Outside the United States [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Concentration Risk, Percentage 55.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= cutr_OutsideTheUnitedStatesMember
58.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= cutr_OutsideTheUnitedStatesMember
59.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_GeographicConcentrationRiskMember
/ us-gaap_StatementGeographicalAxis
= cutr_OutsideTheUnitedStatesMember
Minimum [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Finite-Lived Intangible Asset, Useful Life 11 months    
Maximum [Member]      
Note 1 - Summary of Significant Accounting Policies (Details) [Line Items]      
Finite-Lived Intangible Asset, Useful Life 10 years