Financings - Commercial Mortgage Pass-Through Certificates (Details) - Secured Debt	3 Months Ended
Mar. 31, 2020 USD ($)
RETL Trust
Debt Instrument [Line Items]
Principal Balance	$ 519,735,000
Fair Value	453,336,000
RETL Trust \| Class A
Debt Instrument [Line Items]
Principal Balance	$ 64,835,000
Coupon	1.90%
Fair Value	$ 59,246,000
RETL Trust \| Class B
Debt Instrument [Line Items]
Principal Balance	$ 101,200,000
Coupon	2.30%
Fair Value	$ 87,781,000
RETL Trust \| Class C
Debt Instrument [Line Items]
Principal Balance	$ 308,400,000
Coupon	2.80%
Fair Value	$ 265,490,000
RETL Trust \| Class HRR
Debt Instrument [Line Items]
Principal Balance	$ 45,300,000
Coupon	9.20%
Fair Value	$ 40,658,000
RETL Trust \| Class X-CP
Debt Instrument [Line Items]
Coupon	2.80%
Fair Value	$ 130,000
Notional amount	308,400,000
RETL Trust \| Class X-EXT
Debt Instrument [Line Items]
Fair Value	31,000
Notional amount	308,400,000
Arroyo Trust
Debt Instrument [Line Items]
Principal Balance	747,377,000
Long-term Debt, Gross	747,371,000
Less: Unamortized Deferred Financing Costs	5,074,000
Total	742,297,000
Arroyo Trust \| Class A-1
Debt Instrument [Line Items]
Principal Balance	$ 634,467,000
Coupon	3.30%
Long-term Debt, Gross	$ 634,464,000
Arroyo Trust \| Class A-2
Debt Instrument [Line Items]
Principal Balance	$ 33,996,000
Coupon	3.50%
Long-term Debt, Gross	$ 33,995,000
Arroyo Trust \| Class A-3
Debt Instrument [Line Items]
Principal Balance	$ 53,859,000
Coupon	3.80%
Long-term Debt, Gross	$ 53,857,000
Arroyo Trust \| Class M-1
Debt Instrument [Line Items]
Principal Balance	$ 25,055,000
Coupon	4.80%
Long-term Debt, Gross	$ 25,055,000

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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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

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Debt Instrument, Premium, Coupon Rate

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