Fair Value of Financial Instruments - Unobservable Inputs (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2024 USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Assets, fair value	$ 6,030,040
Discount margin | Level 3 | Weighted Average | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Measurement input	0.041
Discount margin | Level 3 | Minimum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Measurement input	0.030
Discount margin | Level 3 | Maximum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Measurement input	0.095
Discount rate | Level 3 | Weighted Average | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Measurement input	0.106
Discount rate | Level 3 | Minimum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate (as a percent)	10.00%
Discount rate | Level 3 | Maximum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Discount rate (as a percent)	11.50%
Capitalization rate | Level 3 | Weighted Average | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Measurement input	0.091
Capitalization rate | Level 3 | Minimum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Capitalization rate (as a percent)	7.90%
Capitalization rate | Level 3 | Maximum | Discounted Cash Flow | Commercial real estate loans, held-for-investment, net
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Capitalization rate (as a percent)	9.80%