Variable Interest Entity, Number of Classes of Notes

No definition available.

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Balance Type:	na
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- Definition

The amount owed to the reporting entity by counterparties in securitized loan transactions.

+ References

No definition available.

+ Details

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

- 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 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400

Reference 2: 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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

+ Details

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

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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

- 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

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from the securitization of receivables for loans to consumers. Securitization is the structured process whereby interests in loans and other receivables are packaged, underwritten, and sold in the form of asset-backed securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSecuritizationsOfConsumerLoans
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=conn_A2016AClassCNotesMemberDomainDomain
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- Details

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- Details

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- Details

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- Details

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Debt and Capital Lease Obligations - Asset-backed Notes (Details) $ in Thousands	1 Months Ended			12 Months Ended
	Oct. 31, 2016 USD ($) class	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jan. 31, 2017 USD ($)
Debt Instrument [Line Items]
Debt face amount				$ 2,185,850
Proceeds from issuance of debt				2,116,868
2015-A Class A Notes [Member]
Debt Instrument [Line Items]
Debt face amount				952,100
Proceeds from issuance of debt				$ 922,247
Stated interest rate				4.565%
Effective interest rate percentage				9.10%
2015-A Class B Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 165,900
Proceeds from issuance of debt				$ 156,200
Stated interest rate				8.50%
Effective interest rate percentage				10.00%
2016-A Class A Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 423,030
Proceeds from issuance of debt				$ 409,845
Stated interest rate				4.68%
Effective interest rate percentage				7.20%
2016-A Class B Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 70,510
Proceeds from issuance of debt				$ 68,309
Stated interest rate				8.96%
Effective interest rate percentage				10.10%
2016-A Class C Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 70,510
Proceeds from issuance of debt				$ 71,648
Stated interest rate				12.00%
Effective interest rate percentage				10.60%
2016-B Class A Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 391,840
Proceeds from issuance of debt				$ 380,033
Stated interest rate				3.73%
Effective interest rate percentage				6.30%
2016-B Class B Notes [Member]
Debt Instrument [Line Items]
Debt face amount				$ 111,960
Proceeds from issuance of debt				$ 108,586
Stated interest rate				7.34%
Effective interest rate percentage				8.20%
Variable Interest Entity, Primary Beneficiary [Member] \| Secured Debt [Member] \| 2015 VIE [Member]
Debt Instrument [Line Items]
Accounts Receivable from Securitization			$ 1,400,000
Debt face amount			1,120,000
Proceeds from issuance of debt			$ 1,080,000
Variable Interest Entity, Primary Beneficiary [Member] \| Secured Debt [Member] \| 2016-A VIE [Member]
Debt Instrument [Line Items]
Accounts Receivable from Securitization		$ 705,100
Debt face amount	$ 70,500	493,500
Proceeds from issuance of debt	71,600	$ 478,200
Variable Interest Entity, Primary Beneficiary [Member] \| Secured Debt [Member] \| 2016-B VIE [Member]
Debt Instrument [Line Items]
Accounts Receivable from Securitization	$ 699,700
Variable Interest Entity, Number of Classes of Notes \| class	2
Debt face amount	$ 503,800
Proceeds from issuance of debt	$ 488,600