XML 24 R57.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Note 13 - Significant Risks and Uncertainties (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011
Cash, Uninsured Amount (in Dollars) | $ 4,397,166 | $ 3,859,843
Number of Major Customers | 1 | 1
Export Sales to Unaffiliated Customers as Percentage of Total Sales | 24.40% | 12.00%
Customer A [Member] |  |
Entity-Wide Revenue, Major Customer, Percentage | 16.60% | 43.20%

X
- Definition Export Sales to Unaffiliated Customers as Percentage of Total Sales + References No definition available. + Details
Name: | cvv_ExportSalesToUnaffiliatedCustomersAsPercentageOfTotalSales
Namespace Prefix: | cvv_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Major Customers + References No definition available. + Details
Name: | cvv_NumberOfMajorCustomers
Namespace Prefix: | cvv_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashUninsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References No definition available. + Details
Name: | us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration