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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.

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Loans and Investments - Prior Years Loan Resolutions (Details) $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($) loan	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($) loan	Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Recoveries of reserves					$ 12,959	$ 4,776	$ 1,500
Number of loans sold \| loan		4
Bridge loans, total UPB					$ 611,696	$ 427,929
Financing Receivable, Accrued Interest, After Allowance For Credit Loss, Statement Of Financial Position, Extensible List Not Disclosed					deferred interest	deferred interest
Gain on sales, including fee-based services, net					$ 74,932	$ 72,522	$ 55,816
Interest reserve					$ 215,400	$ 156,100
Number of loans covered under interest reserve \| loan			589	537	589	537
Interest reserve, unpaid principal balance			$ 8,650,000	$ 8,440,000	$ 8,650,000	$ 8,440,000
Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Bridge loans, total UPB	$ 100,300			100,300
Houston Properties
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Proceeds from sale of real estate	$ 101,300	$ 239,400
Houston Properties \| Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Recoveries of reserves			7,700
Bridge loans, total UPB			73,300
Financing receivable, deferred basis spread on variable rate		3.47%
Financing receivable, accrued interest			$ 22,200	10,300	$ 22,200	10,300
Minimum \| Houston Properties \| Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Financing receivable, fixed interest rate		0.0300
Maximum \| Houston Properties \| Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Financing receivable, fixed interest rate		0.0500
Office
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Financing receivable, net of reserve				37,100		37,100
Loan reserve				8,000		$ 8,000
Recoveries of reserves				$ 2,300
Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of loans sold \| loan							4
Bridge loans, total UPB		$ 217,400
Unpaid principal balance on loans							$ 296,900
Gain on sales, including fee-based services, net							2,000
Financing receivable							78,000
Bridge Loan and Mezzanine Loan
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total mortgage loans and mezzanine loan sold							110,500
Loan discount							102,200
Capital investment to be used for future							66,300
Fees and expenses							9,200
Additional potential loan recover							$ 2,800