Numbers of operating partnership units issued or issuable in consideration for the business combination.

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The amount of mortgage loans converted to mezzanine loans during the reporting period.

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Represents information pertaining to the percentage of indirect ownership in a business.

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No definition available.

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Represents the percentage of noncontrolling interest in the equity method investment acquired by the entity.

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Minimum variable interest rate for loans receivable.

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Represents the fixed interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans.

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The number of multifamily properties renovated.

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Represents the maximum percentage of ownership interest of the Company's common stock allowed under the company's charter.

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Represents the cash outflow during the reporting period in respect of payments for loans and investments funded and purchased by the reporting entity.

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Amount of Payments To Purchase Property.

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The percentage of equity participation interest.

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Represent information pertaining to percentage of loan assumption fee.

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Represents information pertaining to percentage of maximum loss-sharing obligation unpaid principal balance.

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Represents the percentage of outstanding membership interest of a related party in another related party.

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The minimum amount the entity agreed to fund under the related party commitment.

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Represents the percentage of ownership of common stock or equity participation owned by related party.

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Represent information pertaining to related party, percentage of management.

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Represents the number of bridge loan originated with relevant mortgage property owned by related parties.

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Represents the number of mortgage loans secured by property purchased from the related party.

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Represents the percentage of voting power held by a related party.

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The amount of reimbursements made to related party during the period for flights chartered by the company's executives.

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Represents the number of common shares held by a related party.

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The upsized amount the entity agreed to fund under the related party commitment.

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Amount of decrease in investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate, from collection of principal.

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Amount for accounts payable to related parties.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of interest income earned from interest-bearing assets owed to the entity by related party.

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The fair value of loans assumed in noncash investing or financing activities.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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Agreements and Transactions with Related Parties - Other Related Party (Details) $ in Thousands	1 Months Ended									9 Months Ended	12 Months Ended
	Jul. 31, 2022 USD ($)	Apr. 30, 2022 USD ($)	Feb. 28, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) property	Aug. 31, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jan. 31, 2019 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) property	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) property loan	Dec. 31, 2017 USD ($) loan property	Dec. 31, 2016 USD ($) property	Dec. 31, 2015 USD ($)	Oct. 31, 2020	Jul. 31, 2019 USD ($)
Agreements and Transactions with Related Parties
Due from related party				$ 84,318							$ 77,419	$ 84,318
Due to related party				26,570							12,350	26,570
Interest income recorded												500	$ 3,400
Investment made											$ 5,955,061	9,209,475	2,376,233
Proceeds from repayment in full									$ 10,900
Indirect ownership percentage											9.20%
Paydowns of principal made by borrower											$ 3,818,554	2,516,771	1,243,694
Percentage of our former Manager's outstanding membership interest of related party in another related party											35.00%
Income from equity affiliates											$ 14,247	34,567	76,161
AMAC III
Agreements and Transactions with Related Parties
Interest income recorded											1,900	1,300	1,900
Distribution received											500	3,800	100
Income from equity affiliates											2,400	1,300	900
Lexford Portfolio [Member]
Agreements and Transactions with Related Parties
Distribution received											11,100		$ 1,100
Other Related Party Transactions
Agreements and Transactions with Related Parties
Due from related party				84,300							$ 77,400	84,300
Commercial Mortgage Backed Security [Member]
Agreements and Transactions with Related Parties
Loans assumed				26,000
Chairman and Chief executive officer
Agreements and Transactions with Related Parties
Ownership interest limit of our common stock under company charter (as a percent)											5.00%
Agency Platform Acquisition [Member] \| Residential mortgage banking business
Agreements and Transactions with Related Parties
Distribution received											$ 23,800	28,000
Retail property
Agreements and Transactions with Related Parties
Property purchased				$ 32,500								32,500
Mature date of April 2030 \| Private Label [Member]
Agreements and Transactions with Related Parties
Fixed rate of interest (as a percent)													3.10%
Maturity date of March 2030 \| Private Label [Member] \| Lexford Portfolio [Member]
Agreements and Transactions with Related Parties
Principal amount								$ 34,600
Fixed rate of interest (as a percent)								3.30%
Maturity date of March 2025 \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)	5.50%
Preferred Equity Investments In Mortgage Loans [Member]
Agreements and Transactions with Related Parties
Equity investment											9,600
Preferred Equity Investments In Mortgage Loans [Member] \| Single Family [Member]
Agreements and Transactions with Related Parties
Investment made													$ 4,600
Mezzanine Loan [Member] \| Single Family [Member]
Agreements and Transactions with Related Parties
Interest income recorded													300
Bridge Loan [Member]
Agreements and Transactions with Related Parties
Principal amount											35,000
Bridge Loan [Member] \| Single Family [Member]
Agreements and Transactions with Related Parties
Interest income recorded												1,300	1,600
Loan committed						$ 32,500				$ 41,500	$ 12,300		$ 30,500
Investment made						$ 3,500
Bridge Loan [Member] \| Maturity Date Of June 2021 [Member] \| Lexford Portfolio [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)															4.00%
Paydowns of principal made by borrower									250,000
Unsecured financing provided by an unsecured lender to certain parent entities of the property owners															$ 50,000
Bridge loan, six multifamily properties
Agreements and Transactions with Related Parties
UPB converted to a mezzanine loan									2,000
Bridge loan, six multifamily properties \| Maturity date of September 2019
Agreements and Transactions with Related Parties
Principal amount									$ 12,900
Ginkgo Investment Company LLC \| Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Agreements and Transactions with Related Parties
Percentage of maximum loss-sharing obligation unpaid principal balance																20.00%
Loan purchased a multifamily apartment complex which assumed																$ 8,300
Percentage of ownership after transaction											3.60%
Percentage of loan assumption fee																1.00%
Servicing revenue																$ 100
ACM, Certain executives and Consortium of independent outside investors \| AMAC III
Agreements and Transactions with Related Parties
Amount invested											$ 25,200			$ 30,000
Ownership interest (as a percent)														18.00%
ACM, Certain executives and Consortium of independent outside investors \| Private Label [Member] \| AMAC III
Agreements and Transactions with Related Parties
Percentage of ownership interest of related party in the entity														100.00%
Fixed rate of interest (as a percent)														3.735%
Amount of loan to related party														$ 15,600
ACM, Certain executives and Consortium of independent outside investors \| Mezzanine Loan [Member] \| Mature date of April 2030
Agreements and Transactions with Related Parties
Fixed rate of interest (as a percent)													9.00%
ACM, Certain executives and Consortium of independent outside investors \| Bridge Loan [Member] \| AMAC III
Agreements and Transactions with Related Parties
Amount of loan to related party																				$ 34,000
Unaffiliated borrower \| Mezzanine Loan [Member] \| AMAC III
Agreements and Transactions with Related Parties
Amount of loan to related party																				7,000
ACM
Agreements and Transactions with Related Parties
Percentage of ownership interest of related party in the entity																		50.00%
ACM \| Residential mortgage banking business
Agreements and Transactions with Related Parties
Acquisition purchase price																		$ 9,600
Noncontrolling interest in equity method investment acquired (as a percent)																		50.00%
Indirect ownership percentage																		12.30%
Income from equity affiliates											$ 4,900	34,600	$ 75,700
ACM \| Agency Platform Acquisition [Member]
Agreements and Transactions with Related Parties
Number of shares held by related party \| shares											2,535,870
OP units hold as part of acquisition \| shares											10,615,085
Aggregate percentage of voting power held by related party											7.00%
ACM \| Bridge Loan [Member] \| Single Family [Member]
Agreements and Transactions with Related Parties
Loan committed upsized										$ 38,800
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Maturity date of January 2019 \| Multifamily [Member]
Agreements and Transactions with Related Parties
Number of properties owned \| property						2							2
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Preferred Equity Investments In Mortgage Loans [Member] \| Maturity date of September 2019 \| Multifamily [Member]
Agreements and Transactions with Related Parties
Equity investment						$ 3,400							$ 3,400
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Bridge loan, one multifamily property
Agreements and Transactions with Related Parties
Principal amount															$ 21,700
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Bridge loan, one multifamily property \| Maturity date of August 2022
Agreements and Transactions with Related Parties
Principal amount							$ 35,400													$ 34,000
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Bridge loan, one multifamily property \| Maturity date of August 2022 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Variable rate, spread (as a percent)							3.50%
Consortium of investors including other unaffiliated investors, certain of officers and chief executive officer \| Bridge loan, two multifamily properties \| Maturity date of January 2019
Agreements and Transactions with Related Parties
Principal amount						$ 14,800							$ 14,800
Percentage of ownership interest of related party in the entity													50.00%
Consortium of investors including an immediate family member of our officers \| Multifamily [Member] \| Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Agreements and Transactions with Related Parties
Principal amount																$ 46,900
Percentage of ownership interest of related party in the entity																17.60%
Percentage of maximum loss-sharing obligation unpaid principal balance																5.00%
Servicing revenue																$ 100
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, several multifamily properties \| Maturity Date Of June 2021 [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)															4.75%
LIBOR floor (as a percentage)															0.25%
Interest income recorded											$ 1,400	1,300	$ 1,400
Percentage of ownership interest of related party in the entity															75.00%
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of October 2021
Agreements and Transactions with Related Parties
Principal amount														$ 31,100
LIBOR floor (as a percentage)														1.80%
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of October 2021 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)														4.00%
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of fourth quarter 2020
Agreements and Transactions with Related Parties
Principal amount																$ 28,000
Base spread (as a percent)																5.25%
Interest income recorded												800	800
Percentage of ownership interest of related party in the entity																45.00%
Number of properties owned \| property																2
Number of mortgage loans secured by property purchased from related party \| loan																2
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of fourth quarter 2020 \| Minimum [Member]
Agreements and Transactions with Related Parties
LIBOR floor (as a percentage)																1.24%
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of fourth quarter 2020 \| Maximum [Member]
Agreements and Transactions with Related Parties
LIBOR floor (as a percentage)																1.54%
Certain certain officers, chief executive officer, and other unaffiliated investors \| Bridge loan, two multifamily properties \| Maturity date of 2020
Agreements and Transactions with Related Parties
Interest income recorded												$ 1,900	$ 1,900
Director [Member] \| Ginkgo Investment Company LLC
Agreements and Transactions with Related Parties
Percentage of managing member																33.00%
Immediate family member of chief executive officer \| LLC
Agreements and Transactions with Related Parties
Ownership interest (as a percent)				10.00%								10.00%
Immediate family member of chief executive officer \| Matures in October 2023 \| Preferred equity interest financing agreement
Agreements and Transactions with Related Parties
Interest income recorded											1,300	$ 500
Immediate family member of chief executive officer \| Maturity date of March 2025
Agreements and Transactions with Related Parties
Percentage of ownership interest of related party in the entity	10.00%
Immediate family member of chief executive officer \| Preferred Equity Investments In Mortgage Loans [Member] \| Matures in October 2023
Agreements and Transactions with Related Parties
Fixed rate of interest (as a percent)						12.00%
Immediate family member of chief executive officer \| Preferred Equity Investments In Mortgage Loans [Member] \| Matures in April 2023
Agreements and Transactions with Related Parties
Fixed rate of interest (as a percent)													12.00%
Immediate family member of chief executive officer \| Bridge Loan [Member]
Agreements and Transactions with Related Parties
Equity participation interest (as a percentage)						21.80%							21.80%						18.90%
Immediate family member of chief executive officer \| Bridge Loan [Member] \| Matures in October 2023
Agreements and Transactions with Related Parties
Interest income recorded													$ 100
Immediate family member of chief executive officer \| Bridge Loan [Member] \| Matures in October 2023 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)						5.50%							5.50%
LIBOR floor (as a percentage)						0.75%
Immediate family member of chief executive officer \| Bridge Loan [Member] \| Matures in May 2023 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)						5.50%							5.50%
LIBOR floor (as a percentage)													0.75%
Amount invested											17,600
Immediate family member of chief executive officer \| Bridge Loan [Member] \| Matures in April 2023
Agreements and Transactions with Related Parties
Interest income recorded											1,600		$ 100
Immediate family member of chief executive officer \| Bridge Loan [Member] \| Mature date of April 2030
Agreements and Transactions with Related Parties
Interest income recorded												600
Lexford Portfolio [Member]
Agreements and Transactions with Related Parties
Maximum exposure under guaranty											582,800
Income from equity affiliates											11,100		1,100
Lexford Portfolio [Member] \| Maturity Date Of June 2021 [Member]
Agreements and Transactions with Related Parties
Interest income recorded													500
Lexford Portfolio [Member] \| Bridge Loan [Member] \| Maturity Date Of June 2021 [Member]
Agreements and Transactions with Related Parties
Number of bridge loans originated \| loan															12
Number of multifamily properties renovated \| property															72
Lexford Portfolio [Member] \| Bridge loan, two multifamily properties \| Maturity Date Of June 2021 [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)															280.50%
Entity controlled by our chief executive officer
Agreements and Transactions with Related Parties
Reimbursement for flights chartered by the company's executives											1,100	$ 200	$ 500
Certain Officers and Managers \| Mezzanine Loan [Member]
Agreements and Transactions with Related Parties
Fixed rate of interest (as a percent)									10.00%
Certain Officers and Managers \| Bridge loan, six multifamily properties \| Maturity date of September 2019
Agreements and Transactions with Related Parties
Principal amount																	$ 48,000
Base spread (as a percent)																	4.50%
LIBOR floor (as a percentage)																	0.25%
Interest income recorded											200
Number of properties owned \| property																	6
Proceeds from repayment in full																$ 6,800
Proceeds from repayment of debt														$ 28,300
Certain Officers and Managers \| Bridge loan, six multifamily properties \| Maturity date of September 2019 \| Minimum [Member]
Agreements and Transactions with Related Parties
Percentage of ownership interest of related party in the entity																	10.50%
Certain Officers and Managers \| Bridge loan, six multifamily properties \| Maturity date of September 2019 \| Maximum [Member]
Agreements and Transactions with Related Parties
Percentage of ownership interest of related party in the entity																	12.00%
Consortium of affiliated investors \| Lexford Portfolio [Member]
Agreements and Transactions with Related Parties
Management fee, percentage of gross revenues of underlying properties												4.75%
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of March 2024
Agreements and Transactions with Related Parties
Interest income recorded											3,700	$ 2,100
Loan committed					$ 63,400
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of March 2024 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)					3.75%
LIBOR floor (as a percentage)					0.25%
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of March 2025
Agreements and Transactions with Related Parties
Principal amount	$ 46,200	$ 67,100	$ 39,400
Interest income recorded											100
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of March 2025 \| London Interbank Offered Rate (LIBOR) [Member]
Agreements and Transactions with Related Parties
Equity participation interest (as a percentage)			2.25%
Base spread (as a percent)			4.00%
LIBOR floor (as a percentage)			0.25%
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of March 2025 \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Agreements and Transactions with Related Parties
Equity participation interest (as a percentage)	70.00%	2.25%
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of May 2025
Agreements and Transactions with Related Parties
Interest income recorded											$ 100
Real estate investment fund sponsored and managed by Chief executive officer and immediate family member of chief executive officer \| Bridge Loan [Member] \| Maturity date of May 2025 \| Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Agreements and Transactions with Related Parties
Base spread (as a percent)		4.625%
LIBOR floor (as a percentage)		0.25%
LLC
Agreements and Transactions with Related Parties
Amount invested				$ 4,200								$ 4,200
LLC \| LLC
Agreements and Transactions with Related Parties
Ownership interest (as a percent)				49.30%								49.30%