|
Provision (Benefit) for Income Taxes (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Current | |||
| Federal | $ 74us-gaap_CurrentFederalTaxExpenseBenefit | ||
| State | 79us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 90us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 61us-gaap_CurrentStateAndLocalTaxExpenseBenefit |
| Foreign | (14)us-gaap_CurrentForeignTaxExpenseBenefit | 1us-gaap_CurrentForeignTaxExpenseBenefit | (409)us-gaap_CurrentForeignTaxExpenseBenefit |
| Current Income Tax Expense (Benefit), Total | 139us-gaap_CurrentIncomeTaxExpenseBenefit | 91us-gaap_CurrentIncomeTaxExpenseBenefit | (348)us-gaap_CurrentIncomeTaxExpenseBenefit |
| Deferred | |||
| Federal | 168us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 216us-gaap_DeferredFederalIncomeTaxExpenseBenefit | (171)us-gaap_DeferredFederalIncomeTaxExpenseBenefit |
| State | 34us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | 87us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | |
| Foreign | (293)us-gaap_DeferredForeignIncomeTaxExpenseBenefit | (251)us-gaap_DeferredForeignIncomeTaxExpenseBenefit | (62)us-gaap_DeferredForeignIncomeTaxExpenseBenefit |
| Deferred income taxes | (109)us-gaap_DeferredIncomeTaxExpenseBenefit | 59us-gaap_DeferredIncomeTaxExpenseBenefit | (220)us-gaap_DeferredIncomeTaxExpenseBenefit |
| Income tax provision (benefit) | 48us-gaap_IncomeTaxExpenseBenefit | 143us-gaap_IncomeTaxExpenseBenefit | (581)us-gaap_IncomeTaxExpenseBenefit |
| Deferred Income Taxes | |||
| Deferred | |||
| Deferred income taxes | $ (91)us-gaap_DeferredIncomeTaxExpenseBenefit / crv_IncomeTaxesAxis = crv_DeferredIncomeTaxesMember |
$ 52us-gaap_DeferredIncomeTaxExpenseBenefit / crv_IncomeTaxesAxis = crv_DeferredIncomeTaxesMember |
$ (233)us-gaap_DeferredIncomeTaxExpenseBenefit / crv_IncomeTaxesAxis = crv_DeferredIncomeTaxesMember |
| X | ||||||||||
|
- Definition
Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Details
|