Note 7 - Income Taxes (Details) - Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Deferred Tax Assets [Abstract]
Net operating loss	$ 12,138	$ 11,014
Stock-based compensation	3,884	3,806
Other accruals and reserves	4,735	3,686
Credits	3,808	3,121
Foreign	295cutr_DeferredTaxAssetsForeign	360cutr_DeferredTaxAssetsForeign
Accrued warranty	417	441
Depreciation and amortization	998	224
Other	66us-gaap_DeferredTaxAssetsOther	470us-gaap_DeferredTaxAssetsOther
Deferred tax asset before valuation allowance	26,341us-gaap_DeferredTaxAssetsGross	23,122us-gaap_DeferredTaxAssetsGross
Valuation allowance	(26,046)	(22,762)
Deferred tax asset after valuation allowance	295us-gaap_DeferredTaxAssetsNet	360us-gaap_DeferredTaxAssetsNet
Deferred tax liability on goodwill	(71)	(39)
Net deferred tax asset	$ 224us-gaap_DeferredTaxAssetsLiabilitiesNet	$ 321us-gaap_DeferredTaxAssetsLiabilitiesNet

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Refers to the amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from foreign operations.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.

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The tax effect as of the balance sheet date of the amount of future tax deductions arising from all unused tax credit carryforwards which have been reduced by a valuation allowance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from other reserves and accruals not separately disclosed.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from warranty reserves.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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