XML 101 R58.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Loans Receivable (Schedule Of Consumer Loans Forecasted Collection Percentage) (Details) | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2005 | Dec. 31, 2006 | Dec. 31, 2007 | Dec. 31, 2008 | Dec. 31, 2009 | Dec. 31, 2010 | Dec. 31, 2011
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Loans Originating In 2005 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 73.70%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member | [1] | 73.70%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member | [1] | 73.60%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 74.00%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member |  | 0.10%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  | (0.30%)cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2005Member |  |  |  |  |  |
Loans Originating In 2006 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 70.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member | [1] | 70.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member | [1] | 69.90%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 71.40%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member |  | 0.10%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  | (1.40%)cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2006Member |  |  |  |  |
Loans Originating In 2007 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 68.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member | [1] | 67.90%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member | [1] | 68.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 70.70%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.10%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  |  | (2.70%)cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2007Member |  |  |  |
Loans Originating In 2008 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 70.30%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member | [1] | 70.10%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member | [1] | 70.30%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 69.70%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.20%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  |  |  | 0.60%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2008Member |  |  |
Loans Originating In 2009 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 79.40%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member | [1] | 79.20%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member | [1] | 79.50%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 71.90%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.20%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member |  | (0.10%)cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  |  |  |  | 7.50%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2009Member |  |
Loans Originating In 2010 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 77.20%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member | [1] | 77.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member | [1] | 77.30%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 73.60%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.20%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member |  | (0.10%)cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  |  |  |  |  | 3.60%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2010Member |
Loans Originating In 2011 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 74.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member | [1] | 74.10%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member | [1] | 74.10%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 72.50%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | (0.10%)cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member |  | (0.10%)cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  |  |  |  |  |  |  |  |  | 1.50%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2011Member
Loans Originating In 2012 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 73.40%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member | [1] | 73.50%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member | [1] | 72.20%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 71.40%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | (0.10%)cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member |  | 1.20%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  |  |  | 2.00%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2012Member |  |  |  |  |  |  |  |
Loans Originating In 2013 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 73.70%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member | [1] | 73.30%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member | [1] | 0.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 72.00%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.40%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage |  |  | 1.70%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2013Member |  |  |  |  |  |  |  |  |  |
LoansOriginatingIn2014 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Forecasted Collection Percentage | 72.60%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member | [1] | 0.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member | [1] | 0.00%cacc_LoansReceivableForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member | [1] |  |  |  |  |  |  |
Initial Forecasted Collection Percentage | 71.80%cacc_LoansReceivableInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member | [1] |  |  |  |  |  |  |  |  |  |  |
Variance In Forecasted Collection Percentage |  |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member |  | 0.00%cacc_LoansReceivableVarianceInForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member |  |  |  |  |  |  |  |
Variance In Initial Forecasted Collection Percentage | 0.80%cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage / cacc_LoansAxis = cacc_LoansOriginatingIn2014Member |  |  |  |  |  |  |  |  |  |  |  |
[1] | Represents the total forecasted collections we expect to collect on the Consumer Loans as a percentage of the repayments that we were contractually owed on the Consumer Loans at the time of assignment. Contractual repayments include both principal and interest.

X
- Definition Loans Receivable Forecasted Collection Percentage + References No definition available. + Details
Name: | cacc_LoansReceivableForecastedCollectionPercentage
Namespace Prefix: | cacc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans Receivable Initial Forecasted Collection Percentage + References No definition available. + Details
Name: | cacc_LoansReceivableInitialForecastedCollectionPercentage
Namespace Prefix: | cacc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans Receivable Variance In Forecasted Collection Percentage + References No definition available. + Details
Name: | cacc_LoansReceivableVarianceInForecastedCollectionPercentage
Namespace Prefix: | cacc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans Receivable Variance In Initial Forecasted Collection Percentage + References No definition available. + Details
Name: | cacc_LoansReceivableVarianceInInitialForecastedCollectionPercentage
Namespace Prefix: | cacc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2005Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2006Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2007Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2008Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2009Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2010Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2011Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2012Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2013Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cacc_LoansAxis=cacc_LoansOriginatingIn2014Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |