v2.4.1.9

Long Term Obligations - Additional Information (Detail) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Nov. 13, 2014 | Mar. 13, 2015
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Debt instrument description | The secured notes payable to bank evidence borrowings under a revolving credit facility which permits us to borrow up to the lesser of (i) $25,000,000, or (ii) an amount equal to 85% of the value of our eligible accounts receivable and up to 55% of the value of our eligible inventory. |  |  |
Debt instrument covenant compliance | As of December 31, 2014, we were in compliance with all of our financial and other covenants under our line of credit agreement. |  |  |
Line of credit borrowing capacity | $ 25,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity |  |  |
Percentage of eligible accounts receivable permitted to borrow under the line of credit | 85.00%crv_LineOfCreditFacilityBorrowingBasePercentageOfAccountsReceivable |  |  |
Percentage of eligible inventories permitted to borrow under the line of credit | 55.00%crv_LineOfCreditFacilityBorrowingBasePercentageOfEligibleInventory |  |  |
Borrowing base of the company | 17,000,000 crv_LineOfCreditFacilityBorrowingBase | 13,800,000 crv_LineOfCreditFacilityBorrowingBase |  |
Credit facility maturity date | Jul. 10, 2017 |  |  |
19th Amendment |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Percentage of eligible accounts receivable permitted to borrow under the line of credit |  |  | 85.00%crv_LineOfCreditFacilityBorrowingBasePercentageOfAccountsReceivable / crv_AmendmentAxis = crv_AmendedCreditFacilityMember |
19th Amendment | Minimum |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Percentage of eligible inventories permitted to borrow under the line of credit |  |  | 50.00%crv_LineOfCreditFacilityBorrowingBasePercentageOfEligibleInventory / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
19th Amendment | Maximum |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Percentage of eligible inventories permitted to borrow under the line of credit |  |  | 55.00%crv_LineOfCreditFacilityBorrowingBasePercentageOfEligibleInventory / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
19th Amendment | During the months of February and July 2015 |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Line of credit borrowing capacity |  |  | 27,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / crv_DebtInstrumentPeriodAxis = crv_PeriodOneMember |
19th Amendment | During the months of March, April and May 2015 |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Line of credit borrowing capacity |  |  | 30,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / crv_DebtInstrumentPeriodAxis = crv_PeriodTwoMember |
19th Amendment | During the month of June 2015 |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Line of credit borrowing capacity |  |  | 29,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / crv_DebtInstrumentPeriodAxis = crv_PeriodThreeMember |
19th Amendment | For the months of January, August, September, October, November and December 2015 |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Line of credit borrowing capacity |  |  | 25,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / crv_AmendmentAxis = crv_AmendedCreditFacilityMember / crv_DebtInstrumentPeriodAxis = crv_PeriodFourMember |
Subsequent Event |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Outstanding borrowings under revolving credit facility |  |  |  | $ 18,390,000 us-gaap_LineOfCredit / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Prime Rate |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Interest rate payable | 3.25%crv_InterestRateOnNotesPayableToBank / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |  |  |
Additional rate of interest | 1.75%crv_AdditionalInterest / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember |  |  |
LIBOR Rate |  |  |  |
Schedule of Capitalization, Long-term Debt [Line Items] |  |  |  |
Interest rate payable | 0.25%crv_InterestRateOnNotesPayableToBank / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |
Additional rate of interest | 3.25%crv_AdditionalInterest / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |

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- Definition Interest Rate On Notes Payable To Bank + References No definition available. + Details
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- Definition Line Of Credit Facility Borrowing Base + References No definition available. + Details
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- Definition Line of Credit Facility Borrowing Base Percentage of Accounts Receivable + References No definition available. + Details
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- Definition Line of Credit Facility Borrowing Base Percentage of Eligible Inventory + References No definition available. + Details
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- Definition States whether the entity was in compliance with the debt covenants throughout the reporting period, and describes facts and circumstances of any compliance failure. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Identification of the lender and information about a contractual promise to repay a short-term or long-term obligation, which includes borrowings under lines of credit, notes payable, commercial paper, bonds payable, debentures, and other contractual obligations for payment. This may include rationale for entering into the arrangement, significant terms of the arrangement, which may include amount, repayment terms, priority, collateral required, debt covenants, borrowing capacity, call features, participation rights, conversion provisions, sinking-fund requirements, voting rights, basis for conversion if convertible and remarketing provisions. The description may be provided for individual debt instruments, rational groupings of debt instruments, or by debt in total. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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Balance Type: | credit
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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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