Financings - Commercial Mortgage Pass-Through Certificates (Details) - Secured Debt	12 Months Ended
Dec. 31, 2021 USD ($)
Arroyo Trust 2019
Debt Instrument [Line Items]
Principal balance	$ 341,072,000
Carrying Value	341,072,000
Less: Unamortized Deferred Financing Costs	3,501,000
Total	337,571,000
Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	183,577,000
Carrying Value	183,577,000
Less: Unamortized Deferred Financing Costs	2,030,000
Total	181,547,000
CSMC Trust
Debt Instrument [Line Items]
Principal balance	1,370,691,000
Debt Instrument, Fair Value Disclosure	1,344,370,000
Class A-1 \| Arroyo Trust 2019
Debt Instrument [Line Items]
Principal balance	$ 277,549,000
Debt Instrument, Premium, Coupon Rate	3.30%
Carrying Value	$ 277,549,000
Class A-1 \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 120,391,000
Debt Instrument, Premium, Coupon Rate	3.30%
Debt Instrument, Fair Value Disclosure	$ 124,143,000
Class A-2 \| Arroyo Trust 2019
Debt Instrument [Line Items]
Principal balance	$ 14,885,000
Debt Instrument, Premium, Coupon Rate	3.50%
Carrying Value	$ 14,885,000
Class A-2 \| Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	$ 13,518,000
Debt Instrument, Premium, Coupon Rate	2.90%
Carrying Value	$ 13,518,000
Class A-2 \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 531,700,000
Debt Instrument, Premium, Coupon Rate	4.00%
Debt Instrument, Fair Value Disclosure	$ 559,447,000
Class B \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 136,400,000
Debt Instrument, Premium, Coupon Rate	4.20%
Debt Instrument, Fair Value Disclosure	$ 133,776,000
Class C \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 94,500,000
Debt Instrument, Premium, Coupon Rate	4.30%
Debt Instrument, Fair Value Disclosure	$ 91,460,000
Class A-3 \| Arroyo Trust 2019
Debt Instrument [Line Items]
Principal balance	$ 23,583,000
Debt Instrument, Premium, Coupon Rate	3.80%
Carrying Value	$ 23,583,000
Class A-3 \| Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	$ 17,963,000
Debt Instrument, Premium, Coupon Rate	3.30%
Carrying Value	$ 17,963,000
Class M-1 \| Arroyo Trust 2019
Debt Instrument [Line Items]
Principal balance	$ 25,055,000
Debt Instrument, Premium, Coupon Rate	4.80%
Carrying Value	$ 25,055,000
Class M-1 \| Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	$ 11,739,000
Debt Instrument, Premium, Coupon Rate	4.30%
Carrying Value	$ 11,739,000
Class D \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 153,950,000
Debt Instrument, Premium, Coupon Rate	4.40%
Debt Instrument, Fair Value Disclosure	$ 142,388,000
Class E \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 180,150,000
Debt Instrument, Premium, Coupon Rate	4.40%
Debt Instrument, Fair Value Disclosure	$ 160,325,000
Class F \| CSMC Trust
Debt Instrument [Line Items]
Principal balance	$ 153,600,000
Debt Instrument, Premium, Coupon Rate	4.40%
Debt Instrument, Fair Value Disclosure	$ 117,912,000
Class X-1 \| CSMC Trust
Debt Instrument [Line Items]
Debt Instrument, Premium, Coupon Rate	0.70%
Debt Instrument, Fair Value Disclosure	$ 12,347,000
Notional amount of nonderivative instruments	$ 652,100,000
Class X-2 \| CSMC Trust
Debt Instrument [Line Items]
Debt Instrument, Premium, Coupon Rate	0.20%
Debt Instrument, Fair Value Disclosure	$ 2,572,000
Notional amount of nonderivative instruments	733,500,000
Class A-1A \| Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	$ 125,469,000
Debt Instrument, Premium, Coupon Rate	1.70%
Carrying Value	$ 125,469,000
Class A-1B \| Arroyo Mortgage Trust 2020
Debt Instrument [Line Items]
Principal balance	$ 14,888,000
Debt Instrument, Premium, Coupon Rate	2.10%
Carrying Value	$ 14,888,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

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

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- 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

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- Definition

Amount, after accumulated amortization, of debt discount (premium).

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Nominal or face amount used to calculate payments on a nonderivative instrument.

+ References

No definition available.

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- Definition

Debt Instrument, Premium, Coupon Rate

+ References

No definition available.

+ Details

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