Name:	cim_OtherThanTemporaryImpairmentLossesInvestmentsAvailableForSaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresLossSeverityRate
Namespace Prefix:	cim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This item represents the percentage of underlying loans secured by third party guarantees against the loss of value in the underlying assets in the security considered as one of the factors in determining whether available-for-sale investments are other than temporarily impaired.

No definition available.

Name:	cim_OtherThanTemporaryImpairmentLossesInvestmentsAvailableForSaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresThirdPartyGuaranteesPercent
Namespace Prefix:	cim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This item represents the latest three-month rate of prepayment speed considered as one of the factors in determining whether available-for-sale investments are other than temporarily impaired.

No definition available.

Name:	cim_OtherThanTemporaryImpairmentLossesInvestmentsAvailableForSaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresThreeMonthConstantPrepaymentRate
Namespace Prefix:	cim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

This item represents the latest twelve-month rate of prepayment speed considered as one of the factors in determining whether available-for-sale investments are other than temporarily impaired.

No definition available.

Name:	cim_OtherThanTemporaryImpairmentLossesInvestmentsAvailableForSaleSecuritiesPortionRecognizedInEarningsNetQualitativeDisclosuresTwelveMonthConstantPrepaymentRate
Namespace Prefix:	cim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

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

This item represents the delinquency rates of the underlying assets in the security that was considered as one of the potential factors in reaching a conclusion that the available-for-sale investments are other than temporarily impaired and measure the amount of impairment related to credit loss recognized in earnings.

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

-Publisher FASB

-Name FASB Staff Position (FSP)

-Number FAS115-1/124-1

-Paragraph 18A

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.