XML 48 R36.htm IDEA: XBRL DOCUMENT
v3.21.2

Note 3 - Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Derivative Assets (Liabilities), at Fair Value, Net, Total | $ (2,055) | $ (3,106) | [1]
Fair Value of Securities | 1,541 | 1,310 |
Fair Value, Inputs, Level 1 [Member] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net, Total | 0 | 0 | [1]
Fair Value of Securities | 1,541 | 1,310 |
Fair Value, Inputs, Level 2 [Member] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net, Total | (2,055) | (3,106) | [1]
Fair Value of Securities | 0 | 0 |
Fair Value, Inputs, Level 3 [Member] |  |  |
Derivative Assets (Liabilities), at Fair Value, Net, Total | 0 | 0 | [1]
Fair Value of Securities | $ 0 | $ 0 |
[1] | Includes derivative assets of $122 at December 31, 2020.

X
- Definition The fair value portion of investment in marketable securities. + References No definition available. + Details
Name: | cvlg_MarketableSecuritiesFairValueDisclosure
Namespace Prefix: | cvlg_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=117331979&loc=d3e41228-113958 + Details
Name: | us-gaap_DerivativeAssetsLiabilitiesAtFairValueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |