Securitized Debt - Callable Debt (Detail) - Securitized Loans $ in Thousands	Jun. 30, 2020 USD ($)
Debt Instrument, Redemption [Line Items]
2020	$ 3,201,993
2021	2,559,613
2022	1,510,154
2023	403,236
Total	$ 7,674,996

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable at the option of the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable in year two following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearOne
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Securitized Debt Loans Held for Investment Principal Callable in Year Three

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearThree
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable in year three following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableInYearTwo
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The principal amount of securitized debt collateralized by loans held for investment callable in the remainder of the fiscal year following the latest fiscal year ended.

+ References

No definition available.

+ Details

Name:	cim_SecuritizedDebtLoansHeldForInvestmentPrincipalCallableRemainderOfFiscalYear
Namespace Prefix:	cim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: