XML 16 R55.htm IDEA: XBRL DOCUMENT v2.4.1.9

Derivative and Hedging Instruments (Schedule of Terms of Interest Rate Cap Agreements) (Details) (USD $)

3 Months Ended

12 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Derivative [Line Items]

Interest rate caps, fair value of less than $0.1 million

$ 100,000us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral

$ 100,000us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral

Warehouse Facility II [Member]

Derivative [Line Items]

Debt facility financing amount

325,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember

^[1],[2]

Warehouse Facility II [Member] | 5.50% Cap Interest Rate [Member]

Derivative [Line Items]

Debt facility financing amount

325,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

325,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Start

Dec. 01, 2014

End

Jun. 01, 2016

Jun. 01, 2016

Notional

325,000,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

325,000,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Cap Interest Rate

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIIMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

Term ABS 2012-2 [Member]

Derivative [Line Items]

Debt facility financing amount

252,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_TermAssetBackedSecuredFinancingsTwoThousandTwelveTwoMember

^[1]

Start

Dec. 01, 2014

Warehouse Facility IV [Member]

Derivative [Line Items]

Debt facility financing amount

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember

^[1],[2]

Warehouse Facility IV [Member] | 5.50% Cap Interest Rate [Member]

Derivative [Line Items]

Debt facility financing amount

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Start

Aug. 01, 2011

Aug. 01, 2011

End

Sep. 01, 2015

Sep. 01, 2015

Notional

18,000,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

29,300,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Cap Interest Rate

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

Warehouse Facility IV Member Starting March 2014 [Member] | 5.50% Cap Interest Rate [Member]

Derivative [Line Items]

Debt facility financing amount

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Start

Mar. 01, 2014

Mar. 01, 2014

End

Mar. 01, 2017

Mar. 01, 2017

Notional

57,000,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

45,700,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

Cap Interest Rate

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

5.50%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityIVMemberStartingMarch2014Member
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePointFivePercentCapInterestRateMember

^[3]

Warehouse Facility V [Member]

Derivative [Line Items]

Debt facility financing amount

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember

^[1],[2]

Warehouse Facility V [Member] | 5.00% Cap Interest Rate [Member]

Derivative [Line Items]

Debt facility financing amount

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

75,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

Start

Jun. 01, 2012

Jun. 01, 2012

End

Jul. 01, 2015

Jul. 01, 2015

Notional

$ 56,300,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

$ 56,300,000invest_DerivativeNotionalAmount
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

Cap Interest Rate

5.00%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

^[3]

5.00%us-gaap_DerivativeCapInterestRate
/ us-gaap_DebtInstrumentAxis
= cacc_WarehouseFacilityVMember
/ us-gaap_DerivativeInstrumentRiskAxis
= cacc_FivePercentCapInterestRateMember

^[3]

[1]	Financing made available only to a specified subsidiary of the Company.
[2]	Interest rate cap agreements are in place to limit the exposure to increasing interest rates.
[3]	Rate excludes the spread over the LIBOR rate or the commercial paper rate, as applicable.

X

- Definition

Interest Rate Contracts Inception Date

+ References

No definition available.

+ Details

Name:	cacc_InterestRateContractsInceptionDate
Namespace Prefix:	cacc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Interest Rate Contracts Maturity Date

+ References

No definition available.

+ Details

Name:	cacc_InterestRateContractsMaturityDate
Namespace Prefix:	cacc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 12

-Section 13

-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeCapInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 10

-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226006-175313



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 8

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56946850&loc=d3e41678-113959

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_DerivativeLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=cacc_TermAssetBackedSecuredFinancingsTwoThousandTwelveTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=cacc_WarehouseFacilityIIMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=cacc_WarehouseFacilityIVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=cacc_WarehouseFacilityIVMemberStartingMarch2014Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=cacc_WarehouseFacilityVMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: