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Commitments and Contingencies Commitments and Contingencies (Non-Compete, Consulting and Employment Agreements) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($)
Other Commitments [Line Items] |
Other Commitment, Due in Next Twelve Months | $ 4.7
Other Commitment, Due in Second Year | 3.5
Other Commitment, Due in Third Year | 3.0
Other Commitment, Due in Fourth Year | 2.3
Other Commitment, Due in Fifth Year | 1.6
Other Commitment, Due after Fifth Year | 1.5
Other Commitment | 16.6
Noncompete Agreements |
Other Commitments [Line Items] |
Other Commitment, Due in Next Twelve Months | 1.9
Other Commitment, Due in Second Year | 1.6
Other Commitment, Due in Third Year | 1.5
Other Commitment, Due in Fourth Year | 1.1
Other Commitment, Due in Fifth Year | 0.7
Other Commitment, Due after Fifth Year | 1.3
Other Commitment | 8.1
Consulting Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Due in Next Twelve Months | 0.9
Other Commitment, Due in Second Year | 0.7
Other Commitment, Due in Third Year | 0.6
Other Commitment, Due in Fourth Year | 0.4
Other Commitment, Due in Fifth Year | 0.2
Other Commitment, Due after Fifth Year | 0.0
Other Commitment | 2.8
Employment Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Due in Next Twelve Months | 1.9
Other Commitment, Due in Second Year | 1.2
Other Commitment, Due in Third Year | 0.9
Other Commitment, Due in Fourth Year | 0.8
Other Commitment, Due in Fifth Year | 0.7
Other Commitment, Due after Fifth Year | 0.2
Other Commitment | $ 5.7
Minimum |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 1 year
Minimum | Noncompete Agreements |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 1 year
Minimum | Consulting Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 1 year
Minimum | Employment Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 3 years
Maximum |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 19 years
Maximum | Noncompete Agreements |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 10 years
Maximum | Consulting Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 5 years
Maximum | Employment Agreement [Member] |
Other Commitments [Line Items] |
Other Commitment, Term of Contract | 5 years

X
- Definition Othe Commitment, Term of Contract + References No definition available. + Details
Name: | csv_OtherCommitmentTermOfContract
Namespace Prefix: | csv_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing after the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueAfterFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the fifth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFifthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the fourth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInFourthYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the next fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInNextTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the second fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInSecondYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum amount of other commitment maturing in the third fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentDueInThirdYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_OtherCommitmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | csv_AgreementTypeAxis=us-gaap_NoncompeteAgreementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | csv_AgreementTypeAxis=csv_ConsultingAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | csv_AgreementTypeAxis=csv_EmploymentAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |