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Note 9 - Income Taxes - Effective Income Tax Rate Reconcilliation (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Income tax benefit at federal statutory rate [34%]	$ 404,311us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	$ (16,581)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
Change in capitalized inventory (Section 263A)		(11,080)cvv_IncomeTaxReconciliationNondeductibleExpenseChangeInCapitalizedInventory
Change in vacation accrual		(21,608)cvv_IncomeTaxReconciliationNondeductibleExpenseChangeInAccruedVacationAccrual
Change in other accruals	12,654cvv_IncomeTaxReconciliationNondeductibleExpenseChangeInOtherAccruals	(4,674)cvv_IncomeTaxReconciliationNondeductibleExpenseChangeInOtherAccruals
Difference between tax and book depreciation	(16,298)us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation	7,532us-gaap_IncomeTaxReconciliationNondeductibleExpenseDepreciation
Stock-based compensation	(9,689)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	(61,394)us-gaap_IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost
Domestic production activities deduction	(37,145)us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities	0us-gaap_IncomeTaxReconciliationDeductionsQualifiedProductionActivities
Research and development credits	(276,329)us-gaap_IncomeTaxReconciliationTaxCreditsResearch	(54,160)us-gaap_IncomeTaxReconciliationTaxCreditsResearch
Net operating loss	443,423cvv_EffectiveIncomeTaxReconciliationOperatingLossCarryforward
Impact of New York State taxation change	0us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate	381,345us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate
Income tax expense	$ 520,927us-gaap_IncomeTaxExpenseBenefit	$ 219,380us-gaap_IncomeTaxExpenseBenefit

X

- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to operating loss carryforward.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the vacation accrual account.

+ References

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the capitalized inventory account.

+ References

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in other accruals.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates.

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-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

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Amount of the difference between reported income tax expense (benefit) and the expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deduction for qualified production activity.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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-Name Accounting Standards Codification

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible depreciation.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible equity-based compensation costs.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

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