Invesco Mortgage Capital (IVR) 10-K 17 Feb 22 2021 FY Annual report Financial data

Cover

Cover - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 15, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-34385
Entity Registrant Name	Invesco Mortgage Capital Inc.
Entity Incorporation, State or Country Code	MD
Entity Tax Identification Number	26-2749336
Entity Address, Address Line One	1555 Peachtree Street, N.E., Suite 1800
Entity Address, City or Town	Atlanta,
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30309
City Area Code	404
Local Phone Number	892-0896
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 1,127,482,929
Entity Common Stock, Shares Outstanding		329,874,780
Documents Incorporated by Reference	Part III of this Form 10-K incorporates by reference certain information (solely to the extent explicitly indicated) from the registrant’s proxy statement for the 2022 Annual Meeting of Stockholders to be filed pursuant to Regulation 14A.
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Central Index Key	0001437071
Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	IVR
Security Exchange Name	NYSE
7.75% Fixed-to-Floating Series B Cumulative Redeemable Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	7.75% Fixed-to-Floating Series B Cumulative Redeemable Preferred Stock
Trading Symbol	IVRpB
Security Exchange Name	NYSE
7.50% Fixed-to-Floating Series C Cumulative Redeemable Preferred Stock
Entity Information [Line Items]
Title of 12(b) Security	7.50% Fixed-to-Floating Series C Cumulative Redeemable Preferred Stock
Trading Symbol	IVRpC
Security Exchange Name	NYSE

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Atlanta, Georgia
Auditor Firm ID	238

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Mortgage-backed securities, at fair value (including pledged securities of $7,326,175 and $7,614,935, respectively; net of allowance for credit losses of $1,768 as of December 31, 2020)	$ 7,804,259	$ 8,172,182
Cash and cash equivalents	357,134	148,011
Restricted cash	219,918	244,573
Due from counterparties	7,985	1,078
Investment related receivable	16,766	15,840
Derivative assets, at fair value	270	10,004
Other assets	37,509	41,163
Total assets	8,443,841	8,632,851
Liabilities:
Repurchase agreements	6,987,834	7,228,699
Derivative liabilities, at fair value	14,356	6,344
Dividends payable	29,689	18,970
Investment related payable	0	274
Accrued interest payable	1,171	823
Collateral held payable	280	3,546
Accounts payable and accrued expenses	1,887	1,448
Due to affiliate	6,489	5,589
Total liabilities	7,041,706	7,265,693
Commitments and contingencies
Stockholders' equity:
Common Stock, par value $0.01 per share; 450,000,000 shares authorized; 329,874,780 and 203,222,108 shares issued and outstanding, respectively	3,299	2,032
Additional paid in capital	3,816,406	3,387,552
Accumulated other comprehensive income	37,286	58,605
Retained earnings (distributions in excess of earnings)	(2,882,824)	(2,644,355)
Total stockholders’ equity	1,402,135	1,367,158
Total liabilities and stockholders' equity	8,443,841	8,632,851
Series A Preferred Stock
Stockholders' equity:
Preferred Stock, par value $0.01 per share; 50,000,000 shares authorized:	0	135,356
Series B Preferred Stock
Stockholders' equity:
Preferred Stock, par value $0.01 per share; 50,000,000 shares authorized:	149,860	149,860
Series C Preferred Stock
Stockholders' equity:
Preferred Stock, par value $0.01 per share; 50,000,000 shares authorized:	$ 278,108	$ 278,108

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
MBS and GSE CRT pledged as collateral	$ 7,326,175,000	$ 7,614,935,000
Allowance for credit losses	$ 0	$ 1,768,000
Preferred Stock, par value (in usd per share)	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	50,000,000	50,000,000
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized	450,000,000	450,000,000
Common stock, shares issued	329,874,780	203,222,108
Common stock, shares outstanding	329,874,780	203,222,108
Series A Preferred Stock
Preferred Stock, dividend rate stated percentage	7.75%	7.75%
Preferred Stock, shares issued	0	5,600,000
Preferred Stock, shares outstanding	0	5,600,000
Preferred Stock, aggregate liquidation preference		$ 140,000,000
Series B Preferred Stock
Preferred Stock, dividend rate stated percentage	7.75%	7.75%
Preferred Stock, shares issued	6,200,000	6,200,000
Preferred Stock, shares outstanding	6,200,000	6,200,000
Preferred Stock, aggregate liquidation preference	$ 155,000,000	$ 155,000,000
Series C Preferred Stock
Preferred Stock, dividend rate stated percentage	7.50%	7.50%
Preferred Stock, shares issued	11,500,000	11,500,000
Preferred Stock, shares outstanding	11,500,000	11,500,000
Preferred Stock, aggregate liquidation preference	$ 287,500,000	$ 287,500,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income
Mortgage-backed and credit risk transfer securities		$ 167,056	$ 277,400	$ 772,657
Commercial and other loans		2,146	2,766	5,710
Total interest income		169,202	280,166	778,367
Interest expense
Repurchase agreements	[1]	(11,290)	73,607	430,697
Secured loans		0	8,655	41,623
Total interest expense		(11,290)	82,262	472,320
Net interest income		180,492	197,904	306,047
Other income (loss)
Gain (loss) on investments, net		(366,509)	(961,938)	624,466
(Increase) decrease in provision for credit losses		1,768	(1,768)	0
Equity in earnings of unconsolidated ventures		870	1,163	2,224
Gain (loss) on derivative instruments, net		122,611	(851,050)	(534,755)
Realized and unrealized credit derivative income (loss), net		0	(35,312)	8,343
Net gain (loss) on extinguishment of debt		0	14,742	0
Other investment income (loss), net		1	2,137	3,950
Total other income (loss)		(241,259)	(1,832,026)	104,228
Expenses
Management fee — related party		21,080	29,367	38,173
General and administrative		8,153	10,863	8,001
Total expenses		29,233	40,230	46,174
Net income (loss) attributable to Invesco Mortgage Capital Inc.		(90,000)	(1,674,352)	364,101
Dividends to preferred stockholders		37,795	44,426	44,426
Issuance and redemption costs of redeemed preferred stock		4,682	0	0
Net income (loss) attributable to common stockholders		$ (132,477)	$ (1,718,778)	$ 319,675
Net income (loss) attributable to common stockholders
Basic (in usd per share)		$ (0.48)	$ (9.89)	$ 2.42
Diluted (in usd per share)		$ (0.48)	$ (9.89)	$ 2.42
Weighted average number of shares of common stock:
Basic (in shares)		275,132,233	173,730,389	132,305,568
Diluted (in shares)		275,132,233	173,730,389	132,317,853
[1]	Negative interest expense on repurchase agreements in 2021 is due to amortization of net deferred gains on de-designated interest rate swaps that exceeds current period interest expense on repurchase agreements. For further information on amortization of amounts classified in accumulated other comprehensive income before we discontinued hedge accounting, see Note 8 - “Derivatives and Hedging Activities” and Note 12 - “Stockholders' Equity”

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (90,000)	$ (1,674,352)	$ 364,101
Other comprehensive income (loss):
Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net	756	(223,416)	83,965
Reclassification of unrealized (gain) loss on sale of mortgage-backed and credit risk transfer securities to gain (loss) on investments, net	0	13,940	9,072
Reclassification of unrealized loss on available-for-sale securities to (increase) decrease in provision for credit losses	0	1,768	0
Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense	(22,000)	(23,794)	(23,729)
Currency translation adjustments on investment in unconsolidated venture	(75)	1,144	(1,158)
Total other comprehensive income (loss)	(21,319)	(230,358)	68,150
Comprehensive income (loss)	(111,319)	(1,904,710)	432,251
Less: Dividends to preferred stockholders	(37,795)	(44,426)	(44,426)
Less: Issuance and redemption costs of redeemed preferred stock	(4,682)	0	0
Comprehensive income (loss) attributable to common stockholders	$ (153,796)	$ (1,949,136)	$ 387,825

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Preferred Stock	Preferred StockSeries A Preferred Stock	Preferred StockSeries B Preferred Stock	Preferred StockSeries C Preferred Stock	Common Stock	Additional Paid in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings (Distributions in Excess of Earnings)
Beginning balance (in shares) at Dec. 31, 2018				5,600,000	6,200,000	11,500,000	111,584,996
Beginning balance at Dec. 31, 2018	$ 2,286,697			$ 135,356	$ 149,860	$ 278,108	$ 1,115	$ 2,383,532	$ 220,813	$ (882,087)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	364,101									364,101
Other comprehensive income (loss)	68,150								68,150
Proceeds from issuance of common stock, net of offering costs (in shares)							32,640,260
Proceeds from issuance of common stock, net of offering costs	508,926						$ 328	508,598
Stocks awards (in shares)							31,101
Stock awards	0
Common stock dividends	(252,071)									(252,071)
Preferred stock dividends	(44,426)									(44,426)
Amortization of equity-based compensation	522							522
Ending balance (in shares) at Dec. 31, 2019				5,600,000	6,200,000	11,500,000	144,256,357
Ending balance at Dec. 31, 2019	$ 2,931,899	$ 342		$ 135,356	$ 149,860	$ 278,108	$ 1,443	2,892,652	288,963	(814,483)
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible List]	Accounting Standards Update 2016-13 [Member]
Net income (loss)	$ (1,674,352)									(1,674,352)
Other comprehensive income (loss)	(230,358)								(230,358)
Proceeds from issuance of common stock, net of offering costs (in shares)							42,549,740
Proceeds from issuance of common stock, net of offering costs	420,737						$ 425	420,312
Stocks awards (in shares)							77,500
Stock awards	1						$ 1
Common stock dividends	(37,202)						$ 163	74,071		(111,436)
Common stock dividends (in shares)							16,338,511
Preferred stock dividends	(44,426)									(44,426)
Amortization of equity-based compensation	517							517
Ending balance (in shares) at Dec. 31, 2020				5,600,000	6,200,000	11,500,000	203,222,108
Ending balance at Dec. 31, 2020	1,367,158			$ 135,356	$ 149,860	$ 278,108	$ 2,032	3,387,552	58,605	(2,644,355)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	(90,000)									(90,000)
Other comprehensive income (loss)	(21,319)								(21,319)
Proceeds from issuance of common stock, net of offering costs (in shares)							126,469,020
Proceeds from issuance of common stock, net of offering costs	429,504						$ 1,265	428,239
Stocks awards (in shares)							183,652
Stock awards	2						$ 2
Common stock dividends	(105,992)									(105,992)
Preferred stock dividends	(37,795)									(37,795)
Redemption of preferred stock (in shares)			(5,600,000)
Redemption of preferred stock	(140,038)		$ (135,356)							(4,682)
Amortization of equity-based compensation	615							615
Ending balance (in shares) at Dec. 31, 2021				0	6,200,000	11,500,000	329,874,780
Ending balance at Dec. 31, 2021	$ 1,402,135			$ 0	$ 149,860	$ 278,108	$ 3,299	$ 3,816,406	$ 37,286	$ (2,882,824)

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net income (loss)	$ (90,000)	$ (1,674,352)	$ 364,101
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Amortization of mortgage-backed and credit risk transfer securities premiums and (discounts), net	37,397	15,980	46,243
Realized and unrealized (gain) loss on derivative instruments, net	(138,414)	859,097	570,595
Realized and unrealized (gain) loss on credit derivatives, net	0	41,635	12,490
(Gain) loss on investments, net	366,509	961,938	(624,466)
Increase (decrease) in provision for credit losses	(1,768)	1,768	0
(Gain) loss from investments in unconsolidated ventures in excess of distributions received	9	229	(490)
Other amortization	(21,383)	(23,276)	(23,207)
Net (gain) loss on extinguishment of debt	0	(14,742)	0
Changes in operating assets and liabilities:
(Increase) decrease in operating assets	(1,166)	51,645	(8,096)
Increase (decrease) in operating liabilities	1,108	(49,463)	6,189
Net cash provided by (used in) operating activities	152,292	170,459	343,359
Cash Flows from Investing Activities
Purchase of mortgage-backed and credit risk transfer securities	(17,132,975)	(13,613,447)	(9,244,391)
Distributions from (contributions to) investments in unconsolidated ventures, net	3,848	6,505	1,346
Change in other assets	0	40,846	10,327
Principal payments from mortgage-backed and credit risk transfer securities	825,189	892,592	2,189,327
Proceeds from sale of mortgage-backed and credit risk transfer securities	16,273,956	25,028,464	3,311,884
Payment on the sale of credit derivatives	0	(31,353)	0
Settlement (termination) of futures, forwards, swaps, swaptions and TBAs, net	156,160	(844,577)	(597,077)
Redemption of Federal Home Loan Bank of Indianapolis stock	0	74,250	0
Net change in due from counterparties and collateral held payable on derivative instruments	(5,430)	1,093	(3,174)
Principal payments from commercial loans held-for-investment	0	136	7,527
Net cash provided by (used in) investing activities	120,748	11,554,509	(4,324,231)
Cash Flows from Financing Activities
Proceeds from issuance of common stock	430,496	420,737	509,075
Redemption of preferred stock	(140,038)	0	0
Principal repayments of secured loans	0	(1,650,000)	0
Proceeds from repurchase agreements	82,347,113	75,698,735	131,624,461
Principal repayments of repurchase agreements and related fees	(82,587,978)	(85,987,597)	(127,694,642)
Net change in due from counterparties and collateral held payable on repurchase agreements	(4,743)	33,773	(32,557)
Payments of deferred costs	(354)	(35)	(346)
Payments of dividends	(133,068)	(137,499)	(271,234)
Net cash provided by (used in) financing activities	(88,572)	(11,621,886)	4,134,757
Net change in cash, cash equivalents and restricted cash	184,468	103,082	153,885
Cash, cash equivalents and restricted cash, beginning of period	392,584	289,502	135,617
Cash, cash equivalents and restricted cash, end of period	577,052	392,584	289,502
Supplement Disclosure of Cash Flow Information
Interest paid	10,363	149,230	489,661
Non-cash Investing and Financing Activities Information
Net change in unrealized gain (loss) on mortgage-backed and credit risk transfer securities	756	(207,708)	93,037
Dividends declared not paid	29,689	18,970	74,841
Increase (decrease) in Agency CMBS purchase commitments	0	(99,557)	(32,530)
Net change in investment related receivable (payable) excluding Agency CMBS purchase commitments	46	266	5,724
Change in foreign currency translation adjustment on other investments	75	(1,144)	1,158
Dividend paid in common stock	0	74,234	0
Offering costs not paid	$ 527	$ 0	$ 48

Organization and Business Opera

Organization and Business Operations	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Business Operations	Organization and Business Operations Invesco Mortgage Capital Inc. (the “Company” or “we”) is a Maryland corporation primarily focused on investing in, financing and managing mortgage-backed securities ("MBS”) and other mortgage-related assets. We currently invest in: • Residential mortgage-backed securities (“RMBS”) that are guaranteed by a U.S. government agency such as the Government National Mortgage Association (“Ginnie Mae”), or a federally chartered corporation such as the Federal National Mortgage Association (“Fannie Mae”) or the Federal Home Loan Mortgage Corporation (“Freddie Mac”) (collectively “Agency RMBS”); • Commercial mortgage-backed securities (“CMBS”) that are not guaranteed by a U.S. government agency or a federally chartered corporation (“non-Agency CMBS”); • RMBS that are not guaranteed by a U.S. government agency or a federally chartered corporation (“non-Agency RMBS”); • Commercial mortgage loans; and • Other real estate-related financing agreements. We have also historically invested in: • CMBS that are guaranteed by a U.S. government agency such as Ginnie Mae or a federally chartered corporation such as Fannie Mae or Freddie Mac (collectively “Agency CMBS”); • Credit risk transfer securities that are unsecured obligations issued by government-sponsored enterprises (“GSE CRT”); and • Residential mortgage loans. We conduct our business through IAS Operating Partnership L.P. (the “Operating Partnership”) and have one operating segment. We are externally managed and advised by Invesco Advisers, Inc. (our “Manager”), a registered investment adviser and an indirect, wholly-owned subsidiary of Invesco Ltd. (“Invesco”), a leading independent global investment management firm. We elected to be taxed as a real estate investment trust (“REIT”) for U.S. federal income tax purposes under the provisions of the Internal Revenue Code of 1986. To maintain our REIT qualification, we are generally required to distribute at least 90% of our REIT taxable income to our stockholders annually. We operate our business in a manner that permits our exclusion from the “Investment Company” definition under the Investment Company Act of 1940, as amended (the “1940 Act”).

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation and Consolidation Our consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and consolidate the financial statements of the Company and our controlled subsidiaries. All significant intercompany transactions, balances, revenues and expenses are eliminated upon consolidation. In the opinion of management, the consolidated financial statements reflect all adjustments, consisting of normal recurring accruals, which are necessary for a fair statement of our financial condition and results of operations for the periods presented. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Examples of estimates include, but are not limited to, estimates of the fair values of financial instruments, interest income on mortgage-backed and credit risk transfer securities and allowances for credit losses. Actual results may differ from those estimates. Translation of Foreign Currencies The functional currency of the Company and its subsidiaries is U.S. dollars. Transactions in foreign currencies are recorded at the rates of exchange prevailing on the date of the transactions. At each balance sheet date, monetary assets and liabilities that are denominated in foreign currencies are remeasured at the rates prevailing at the balance sheet date. Gains and losses arising on revaluation are included in other investment income (loss), net on the consolidated statements of operations. Our reporting currency is U.S. dollars. Upon consolidation, the assets and liabilities of our investment in an unconsolidated venture whose functional currency is the Euro is translated to U.S. dollars using the period-end exchange rates. Equity accounts are translated at historical rates, except for the change in retained earnings during the year, which is the result of the income statement translation process. Revenue and expense accounts are translated using the weighted average exchange rate during the period. The cumulative translation adjustments associated with the investment in the unconsolidated venture are recorded in accumulated other comprehensive income (loss), a component of consolidated stockholders’ equity. We generally hedge interest rate and foreign currency exposure with derivative financial instruments. Refer to Note 8 - “Derivatives and Hedging Activities” for further information. Fair Value Measurements We report our MBS and GSE CRTs and derivative assets and liabilities at fair value as determined by an independent pricing service. We generally obtain one price per instrument from our primary pricing service. If the primary pricing service cannot provide a price, we will seek a value from other pricing services. The pricing service uses two types of valuation approaches to determine the valuation of our various mortgage-backed and credit risk transfer securities: a market approach, which uses observable prices and other relevant information that is generated by market transactions involving identical or comparable assets or liabilities; and an income approach, which uses valuation techniques to convert future amounts to a single, discounted present value amount. In instances where sufficient market activity may not exist, the pricing service may utilize proprietary valuation models that may consider market transactions in comparable securities and the various relationships between securities in determining fair value and/or market characteristics to estimate relevant cash flows, which are then discounted to calculate the fair values. Observable inputs may include a combination of benchmark yields, executed trades, broker/dealer quotes, issuer spreads, bids, offers and benchmark securities. In addition, the valuation models utilized by pricing services may consider additional pool level information such as prepayment speeds, default frequencies and default severities, if applicable. We and the pricing service continuously monitor market indicators and economic events to determine whether they may have an impact on our valuations. The pricing service values interest rate swaps, U.S. Treasury futures (“futures”), currency forward contracts and to-be-announced securities (“TBAs”) under the market approach through the use of quoted prices available in an active market. Overrides of prices from pricing services are rare in the current market environment for the assets we hold. Examples of instances that would cause an override include if we recently traded the same security or there is an indication of market activity that would cause the pricing service price to no longer be indicative of fair value. In the rare instance where a price is adjusted, we have a control process to monitor the reason for such adjustment. To gain comfort that pricing service prices are representative of current market information, we compare the transaction prices of security purchases and sales to the valuation levels provided by the pricing services. Price differences exceeding pre-defined tolerance levels are identified and investigated and may be challenged. Trends are monitored over time and if there are indications that the valuations are not comparable to market activity, the pricing services are asked to provide detailed information regarding their methodology and inputs. Transparency tools are also available from the pricing services which help us understand data points and/or market inputs used for pricing securities. We also review daily price movements for interest rate swaps, futures, currency forward contracts and TBAs. Price movements exceeding pre-defined tolerance levels are investigated using an alternate price from another pricing service as well as available market information. Based on our findings, the primary pricing service may be challenged, or in rare cases, overridden with an alternate pricing source. In addition, we perform due diligence procedures on all pricing services on at least an annual basis. A questionnaire is sent to pricing services which requests information such as changes in methodologies, business recovery preparedness, internal controls and confirmation that evaluations are generated based on market data. Physical visits are also made to each pricing service's office. Virtual visits may take place in lieu of physical visits given concerns surrounding the COVID-19 pandemic. An independent pricing service values our commercial loan investment using a discounted cash flow analysis. The yield used in the discounted cash flow analysis is determined by comparing the features of the loan to the interest rates and terms required by lenders in the new loan origination market for similar loans and the yield required by investors acquiring mezzanine loans in the secondary market as well as a comparison of current market and collateral conditions to those present at origination. As described in Note 10 - “Fair Value of Financial Instruments,” we evaluate the source used to fair value our assets and liabilities and make a determination on its categorization within the fair value hierarchy. If the price of a security is obtained from quoted prices for identical instruments in active markets, the security is classified as a level 1 security. If the price of a security is obtained from quoted prices for similar instruments or model-derived valuations whose inputs are observable, the security is classified as a level 2 security. If the inputs appear to be unobservable, the security would be classified as a level 3 security. Transfers between levels, if any, are determined at the end of the reporting period. Mortgage-Backed and Credit Risk Transfer Securities We record our purchases of MBS and GSE CRTs on the trade date and report these securities at fair value as described above in the Fair Value Measurements section of this Note 2 to our consolidated financial statements. Approximately $7.7 billion (99%) of our MBS are accounted for under the fair value option as of December 31, 2021 (December 31, 2020: $8.1 billion or 99%). Under the fair value option, we recognize changes in fair value in our consolidated statements of operations as unrealized gains and losses. In our view, this election more appropriately reflects the results of our operations because fair value changes are accounted for in the same manner as fair value changes in our economic hedging instruments. We elected the fair value option for all MBS purchased on or after September 1, 2016, GSE CRTs purchased on or after August 24, 2015 and all RMBS interest-only securities. We classify the remaining balance of our MBS as available-for-sale ($70.2 million or 1% as of December 31, 2021; $116.9 million or 1% as of December 31, 2020). Unrealized gains or losses on available-for-sale securities are recorded in accumulated other comprehensive income, a separate component of stockholders' equity, until sale or disposition of the investment. Upon sale or disposition, the cumulative gain or loss previously reported in stockholders' equity is recognized in income. Realized gains and losses from sales of MBS are determined based upon the specific identification method. GSE CRTs purchased before August 24, 2015 were reported at fair value and accounted for as hybrid financial instruments consisting of a debt host contract and an embedded derivative. Unrealized gains or losses arising from changes in fair value of the debt host contract, excluding other-than-temporary impairment, were recognized in accumulated other comprehensive income until sale or disposition of the investment. Upon sale or disposition of the debt host contract, the cumulative gain or loss previously reported in stockholders’ equity was recognized in income. Realized and unrealized gains or losses arising from changes in fair value of the embedded derivative were recognized in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. We elected the fair value option for GSE CRTs purchased on or after August 24, 2015 due to the complexities associated with bifurcation of GSE CRTs into a debt host contract and an embedded derivative. Realized gains and losses from sales of GSE CRTs were determined based upon the specific identification method. Our interest income recognition policies for MBS and GSE CRTs are described below in the Interest Income Recognition section of this Note 2 to our consolidated financial statements. Allowances for Credit Losses on Available-for-Sale Securities We are not required to measure expected credit losses for situations in which historic credit loss information, adjusted for current conditions and reasonable and supportable forecasts, results in an expectation that nonpayment of the amortized cost basis is zero. We consider our Agency portfolio to have zero loss expectation because (i) there have been no historical credit losses, (ii) full and timely payment of principal and interest is guaranteed by the GSEs and (iii) the yields, while not risk free, generally trade based on prepayment and liquidity risk as opposed to credit risk. For non-Agency RMBS and non-Agency CMBS, we use a discounted cash flow method to estimate and recognize an allowance for credit losses. We calculate the allowance for credit losses as the difference between the investment's amortized cost basis and expected cash flows discounted at the effective interest rate used to recognize interest income on the investment. In developing an expectation of credit losses, we use internal models that analyze the loans underlying each investment and evaluate factors including, but not limited to, delinquency status, loan-to-value ratios, borrower credit scores, occupancy status and geographic concentration. We place reliance on these internal models in determining credit quality. We record an allowance for credit losses as a contra-asset on the consolidated balance sheets and a provision for credit losses in the consolidated statements of operations. Credit losses are accreted into earnings over time at the effective interest rate used to recognize interest income. Subsequent favorable or adverse changes in the amount of expected credit losses are recognized immediately in earnings. If the allowance for credit losses has been reduced to zero, we reflect the remaining favorable changes as a prospective adjustment to the effective interest rate of the investment. The allowance for credit losses is limited to the amount by which the investment’s amortized cost exceeds fair value. When the allowance for credit losses is limited, the effective interest rate used to recognize interest income and accrete credit losses is prospectively adjusted. We do not record an allowance for credit losses when an investment’s fair value exceeds its amortized cost. Recoveries of amounts previously written off relating to improvements in cash flows are recognized in earnings when received. We record provisions for credit losses, reductions in provisions for credit losses, accretion of credit losses, and recoveries of amounts previously written off within (increase) decrease in provision for credit losses in our consolidated statements of operations. When we determine that we intend to sell, or more likely than not will be required to sell, an available-for-sale security in an unrealized loss position before we recover its amortized cost, we write off any allowance for credit losses and write down the investment’s amortized cost to its fair value. We record the write off of the allowance for credit losses within (increase) decrease in provision for credit losses on our consolidated statements of operations and write down of the available-for-sale security within gain (loss) on investments, net in our consolidated statements of operations. We present accrued interest receivable separately from our investment portfolio on our consolidated balance sheets. We do not estimate an allowance for credit losses on accrued interest receivable because we write off accrued interest receivable as a reduction to interest income if it is not received when due. Commercial Loans Held-For-Investment As of January 1, 2020, we report our commercial loan investment at fair value as described in the Fair Value Measurements section of this Note 2 to the consolidated financial statements. We record changes in fair value within gain (loss) on investments, net in our consolidated statements of operations. Before January 1, 2020, we carried commercial loans held-for-investment at amortized cost, net of any provision for loan losses. Interest Income Recognition Mortgage-Backed Securities Interest income on MBS is accrued based on the outstanding principal or notional balance of the securities and their contractual terms. Premiums or discounts are amortized or accreted into interest income over the life of the investment using the effective interest method. Interest income on our MBS where we may not recover substantially all of our initial investment is based on estimated future cash flows. We estimate future expected cash flows at the time of purchase and determine the effective interest rate based on these estimated cash flows and our purchase price. Over the life of the investments, we update these estimated future cash flows and compute a revised yield based on the current amortized cost of the investment, unless those changes are reflected in an allowance for credit losses. In situations where an allowance for credit losses is limited by the fair value of the investment, we compute the yield as the rate that equates expected future cash flows to the current fair value of the investment. In estimating these future cash flows, there are a number of assumptions that are subject to uncertainties and contingencies, including but not limited to the rate and timing of principal payments (prepayments, repurchases, defaults and liquidations), the pass through or coupon rate, and interest rate fluctuations. These uncertainties and contingencies are difficult to predict and are subject to future events that may impact our estimate and our interest income. Changes in our original or most recent cash flow projections may result in a prospective change in interest income recognized on these securities, or the amortized cost of these securities, including write-offs of amortized cost when certain amounts are deemed uncollectible. For non-Agency RMBS not of high credit quality, when actual cash flows vary from expected cash flows, the difference is recorded as an adjustment to the amortized cost of the security, unless those changes are reflected in an allowance for credit losses, and the security's yield is revised prospectively. For Agency RMBS and Agency CMBS that cannot be prepaid in such a way that we would not recover substantially all of our initial investment, interest income recognition is based on contractual cash flows. We do not estimate prepayments in applying the effective interest method. Credit Risk Transfer Securities Interest income on GSE CRTs purchased before August 24, 2015 was accrued based on the coupon rate of the debt host contract which reflected the credit risk of GSE unsecured senior debt with a similar maturity. Premiums or discounts associated with the purchase of GSE CRTs were amortized or accreted into interest income over the life of the debt host contract using the effective interest method. The difference between the coupon rate on the hybrid instrument and the coupon rate on the debt host contract was considered premium income associated with the embedded derivative and was recorded in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. Interest income on GSE CRTs purchased on or after August 24, 2015 was based on estimated future cash flows. Commercial and Other Loans We recognize interest income from commercial and other loans when earned and deemed collectible, or until a loan becomes past due based on the terms of the loan agreement. Any related origination fees or costs on commercial and others loans for which we have elected the fair value option are recognized immediately in earnings. Before our decision to elect the fair value option for commercial and other loans, any related origination fees, net of origination cost were amortized into interest income using the effective interest method over the life of the loan. Interest received after a loan becomes past due or impaired is used to reduce the outstanding loan principal balance. When a delinquent loan previously placed on nonaccrual status has cured, meaning all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternately, loans that have been individually impaired may be placed back on accrual status if restructured and after the loan is considered re-performing. A restructured loan is considered re-performing when the loan has been current for at least 12 months. Cash and Cash Equivalents We consider all highly liquid investments that have original or remaining maturity dates of three months or less when purchased to be cash equivalents. At December 31, 2021, we had cash and cash equivalents in excess of the FDIC deposit insurance limit of $250,000 per institution. We mitigate our risk of loss by actively monitoring our counterparties. Restricted Cash Restricted cash represents cash posted with counterparties as collateral for various derivative instruments. Cash posted with counterparties as collateral is not available for general corporate purposes. Due from Counterparties / Collateral Held Payable Due from counterparties represents cash posted with our counterparties as collateral for our derivatives and repurchase agreements. Collateral held payable represents cash posted with us by counterparties as collateral under our derivatives and repurchase agreements. If we receive collateral other than cash from our counterparties, such assets are not included in our consolidated balance sheets. If we either sell such assets or pledge the assets as collateral under a repurchase agreement, the cash received and the corresponding liability is reflected on the consolidated balance sheets. Investment Related Receivable / Investment Related Payable Investment related receivable consists of receivables for mortgage-backed securities that we have sold but have not settled with the buyer and accrued interest and principal paydowns on mortgage-backed securities. Accrued interest receivable was $16.8 million and $15.6 million as of December 31, 2021 and 2020, respectively. Investment related payable consists of liabilities for mortgage-backed securities that we have purchased but have not settled with the seller. Investments in Unconsolidated Ventures Our non-controlling investments in unconsolidated ventures are included in other assets in our consolidated balance sheets and are accounted for under the equity method. Capital contributions, distributions, profits and losses of the entities are allocated in accordance with the terms of the entities’ operating agreements. Such allocations may differ from the stated percentage interests, if any, as a result of preferred returns and allocation formulas as described in the entities' operating agreements. Repurchase Agreements We finance our purchases of mortgage-backed and credit risk transfer securities primarily through the use of repurchase agreements. Repurchase agreements are treated as collateralized financing transactions and are carried at their contractual amounts, including accrued interest, as specified in the respective agreements. We record the mortgage-backed securities and the related repurchase agreement financing on a gross basis in our consolidated balance sheets, and the corresponding interest income and interest expense on a gross basis in our consolidated statements of operations. Secured Loans Our wholly-owned subsidiary, IAS Services LLC, was a member of the Federal Home Loan Bank of Indianapolis (“FHLBI”). As a member of the FHLBI, IAS Services LLC borrowed funds from the FHLBI in the form of secured advances. FHLBI advances were treated as secured financing transactions and carried at their contractual amounts. During the year ended December 31, 2020, we fully repaid our outstanding secured loans from the FHLBI and terminated our membership. IAS Services LLC was dissolved in December 2020. Dividends Payable Dividends payable represent dividends declared at the balance sheet date which are payable to common stockholders and preferred stockholders. Earnings (Loss) per Share We calculate basic earnings (loss) per share by dividing net income (loss) attributable to common stockholders for the period by the weighted-average number of shares of our common stock outstanding for that period. Diluted earnings per share takes into account the effect of dilutive instruments, such as unvested restricted stock awards, and uses the average share price for the period in determining the number of incremental shares that are to be added to the weighted-average number of shares outstanding. Share-Based Compensation Under the terms of our 2009 Equity Incentive Plan (the “Incentive Plan”), our independent directors are eligible to receive stock awards as part of their compensation for serving as directors, In addition, we may compensate the officers and employees of our Manager and its affiliates under the Incentive Plan under the terms of our management agreement. Share-based compensation arrangements may include share options, restricted and non-restricted share awards, performance-based awards and share appreciation rights. Compensation related to stock awards is recognized in the consolidated financial statements based on the fair value of the equity or liability instruments issued on the date of grant. Underwriting Commissions and Offering Costs Underwriting commissions and direct costs incurred in connection with our common and preferred stock offerings are recorded as a reduction of additional paid-in-capital and preferred stock, respectively. Comprehensive Income Our comprehensive income consists of net income, as presented in the consolidated statements of operations, adjusted for unrealized gains and losses on MBS purchased before September 1, 2016 and the debt host contract associated with GSE CRTs purchased before August 24, 2015; reclassification of unrealized losses on available-for-sale securities to (increase) decrease in provision for credit losses; reclassification of amortization of net deferred gains and losses on de-designated interest rate swaps to repurchase agreements interest expense and currency translation adjustments on an investment in an unconsolidated venture. Unrealized gains and losses on our MBS purchased before September 1, 2016 and the debt host contract associated with GSE CRTs purchased before August 24, 2015 are reclassified into net income upon their sale. Accounting for Derivative Financial Instruments We record all derivatives on our consolidated balance sheets at fair value. At the inception of a derivative contract, we determine whether the instrument will be part of a qualifying hedge accounting relationship or whether we will account for the contract as a trading instrument. We have elected not to apply hedge accounting to all new derivative contracts entered into after January 1, 2014. Changes in the fair value of our derivatives are recorded in gain (loss) on derivative instruments, net in our consolidated statements of operations. Net interest paid or received under our interest rate swaps is also recognized in gain (loss) on derivative instruments, net in our consolidated statements of operations. Before 2014, we applied hedge accounting to our interest rate swap agreements. Effective December 31, 2013, we voluntarily discontinued hedge accounting for our interest rate swap agreements by de-designating the interest rate swaps as cash flow hedges. As long as we expect the forecasted transactions that were being hedged (i.e., rollovers of our repurchase agreement borrowings) to still occur, the balance recorded in accumulated other comprehensive income (loss) (“AOCI”) from the interest rate swap activity through December 31, 2013 will remain in AOCI and be recognized in our consolidated statements of operations as interest expense over the remaining term of the interest rate swaps. Prior to December 31, 2020, we were a party to hybrid financial instruments that contained embedded derivative instruments and for which we did not elect the fair value option. We assessed at inception whether the economic characteristics of the embedded derivative instruments were clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the debt host contract), whether the financial instrument was remeasured to fair value through earnings and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it was determined that (1) the embedded instrument possessed economic characteristics that were not clearly and closely related to the economic characteristics of the debt host contract, (2) the financial instrument was not remeasured to fair value through earnings and (3) a separate instrument with the same terms would qualify as a derivative instrument, the embedded instrument qualified as an embedded derivative that was separated from the debt host contract. The embedded derivative was recorded at fair value, and changes in fair value were recorded in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. We evaluate the terms and conditions of our holdings of swaptions, futures contracts, currency forward contracts and TBAs to determine if an instrument has the characteristics of an investment or should be considered a derivative under U.S. GAAP. Accordingly, futures contracts, currency forward contracts and TBAs having the characteristics of derivatives are accounted for at fair value with such changes recognized in gain (loss) on derivative instruments, net in the consolidated statements of operations. The fair value of these futures contracts, currency forward contracts and TBAs is included in derivative assets or derivative liabilities on the consolidated balance sheets. Income Taxes We elected to be taxed as a REIT commencing with our taxable year ended December 31, 2009. Accordingly, we will generally not be subject to U.S. federal and applicable state and local corporate income tax to the extent that we make qualifying distributions to our stockholders, and provided we satisfy on a continuing basis, through actual investment and operating results, the REIT requirements including certain asset, income, distribution and stock ownership tests. If we fail to qualify as a REIT and do not qualify for certain statutory relief provisions, we will be subject to U.S. federal, state and local income taxes and may be precluded from qualifying as a REIT for the four taxable years following the year in which we lost our REIT qualification. Accordingly, our failure to qualify as a REIT could have a material adverse impact on our results of operations and amounts available for distribution to stockholders. Our dividends paid deduction for qualifying dividends to our stockholders is computed using our REIT taxable income as opposed to net income reported on the consolidated financial statements. REIT taxable income will generally differ from net income because the determination of REIT taxable income is based on tax regulations and not financial accounting principles. We have elected to treat two of our subsidiaries as taxable REIT subsidiaries (“TRSs”). In general, TRSs may hold assets and engage in activities that we cannot hold or engage in directly and generally may engage in any real estate or non-real estate-related business. TRSs are subject to U.S. federal, state and local corporate income taxes. Our TRSs did not generate material taxable income for the years ended December 31, 2021, 2020 and 2019. We do not have any accruals for uncertain tax positions. We would recognize interest and penalties related to uncertain tax positions, if any, as income tax expense, which would be included in general and administrative expenses. Accounting Pronouncements Recently Adopted In January 2021, the Financial Accounting Standards Board (“FASB”) expanded existing accounting guidance for evaluating the effects of reference rate reform on financial reporting. The new guidance expands the temporary optional expedients and exceptions to U.S. GAAP for contract modifications, hedge accounting and other relationships that reference London Interbank Overnight Financing Rate (“LIBOR”) to apply to all derivative instruments affected by the market-wide change in the interest rates used for discounting, margining or contract price alignment (commonly referred to as the discounting transition). The new guidance can be applied through December 31, 2022. In the fourth quarter of 2021, we transitioned our interest rate swaps that were indexed to LIBOR to interest rate swaps that are indexed to the Secured Overnight Financing Rate (“SOFR”) in a manner that allowed us to qualify for contract modification relief and maintain the same accounting for and presentation of interest rate swaps that was in place prior to modification. The modifications did not have a material effect on our financial statements.

Variable Interest Entities ("VI

Variable Interest Entities ("VIEs")	12 Months Ended
	Dec. 31, 2021
Variable Interest Entity Disclosure [Abstract]
Variable Interest Entities (VIEs)	Variable Interest Entities (“VIEs”) Our maximum risk of loss in VIEs in which we are not the primary beneficiary at December 31, 2021 is presented in the table below. $ in thousands Carrying Company's Maximum Risk of Loss Non-Agency CMBS 62,909 62,909 Non-Agency RMBS 9,070 9,070 Investments in unconsolidated ventures 12,476 12,476 Total 84,455 84,455 Refer to Note 4 - “Mortgage-Backed and Credit Risk Transfer Securities” and Note 5 - “Other Assets” for additional details regarding these investments.

Mortgage-Backed and Credit Risk

Mortgage-Backed and Credit Risk Transfer Securities	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Mortgage-Backed and Credit Risk Transfer Securities	Mortgage-Backed and Credit Risk Transfer Securities During the first half of 2020, we experienced unprecedented market conditions as a result of the COVID-19 pandemic and sold a substantial portion of our MBS and GSE CRT portfolio to generate liquidity and reduce leverage. We resumed investing in Agency RMBS in July 2020. The following tables summarize our MBS portfolio by asset type at December 31, 2021 and 2020. December 31, 2021 $ in thousands Principal/ Notional Unamortized Amortized Unrealized Fair Period- (1) Agency RMBS: 30 year fixed-rate 7,514,229 246,183 7,760,412 (58,889) 7,701,523 2.07 % Total Agency RMBS pass-through 7,514,229 246,183 7,760,412 (58,889) 7,701,523 2.07 % Agency-CMO (2) 235,216 (203,180) 32,036 (1,279) 30,757 6.47 % Non-Agency CMBS 61,427 (3,096) 58,331 4,578 62,909 8.63 % Non-Agency RMBS (3)(4)(5) 392,543 (383,591) 8,952 118 9,070 5.26 % Total 8,203,415 (343,684) 7,859,731 (55,472) 7,804,259 2.14 % (1) Period-end weighted average yield is based on amortized cost as of December 31, 2021 and incorporates future prepayment and loss assumptions. (2) All Agency collateralized mortgage obligation (“Agency-CMO”) are interest-only securities (“Agency IO”). (3) Non-Agency RMBS is 35.6% variable rate, 63.5% fixed rate and 0.9% floating rate based on fair value. Coupon payments on variable rate investments are based upon changes in the underlying Hybrid adjustable-rate mortgage (“ARM”) loan coupons, while coupon payments on floating rate investments are based upon a spread to a reference index. (4) Of the total discount in non-Agency RMBS, $2.1 million is non-accretable calculated using the principal/notional balance and based on estimated future cash flows of the securities. (5) Non-Agency RMBS includes interest-only securities (“non-Agency IO”) which represent 97.7% of principal/notional balance, 44.8% of amortized cost and 19.9% of fair value. December 31, 2020 $ in thousands Principal/ Notional Unamortized Amortized Allowance for Credit Losses Unrealized Fair Value Period- end Weighted Average Yield (1) Agency RMBS: 30 year fixed-rate 7,635,107 391,644 8,026,751 — 24,115 8,050,866 1.86 % Total Agency RMBS pass-through 7,635,107 391,644 8,026,751 — 24,115 8,050,866 1.86 % Agency-CMO (2) 19,634 (19,634) — — — — — % Non-Agency CMBS 112,549 (5,791) 106,758 (1,768) 4,593 109,583 9.40 % Non-Agency RMBS (3)(4)(5) 790,627 (779,660) 10,967 — 766 11,733 7.83 % Total 8,557,917 (413,441) 8,144,476 (1,768) 29,474 8,172,182 1.97 % (1) Period-end weighted average yield is based on amortized cost as of December 31, 2020 and incorporates future prepayment and loss assumptions. (2) All Agency-CMO are interest-only securities Agency IO. (3) Non-Agency RMBS is 31.8% variable rate, 67.3% fixed rate and 0.9% floating rate based on fair value. Coupon payments on variable rate investments are based upon changes in the underlying Hybrid ARM loan coupons, while coupon payments on floating rate investments are based upon a spread to a reference index. (4) Of the total discount in non-Agency RMBS, $2.1 million is non-accretable calculated using the principal/notional balance and based on estimated future cash flows of the securities. (5) Non-Agency RMBS includes non-Agency IO which represent 98.8% of principal/notional balance, 49.3% of amortized cost and 41.5% of fair value. The following table presents the fair value of our available-for-sale securities and securities accounted for under the fair value option by asset type as of December 31, 2021 and December 31, 2020. We have elected the fair value option for all of our RMBS interest-only securities and our MBS purchased on or after September 1, 2016. As of December 31, 2021 and December 31, 2020, approximately 99% of our MBS are accounted for under the fair value option. December 31, 2021 December 31, 2020 $ in thousands Available-for-sale Securities Securities under Fair Value Option Total Available-for-sale Securities Securities under Fair Value Option Total Agency RMBS: 30 year fixed-rate — 7,701,523 7,701,523 — 8,050,866 8,050,866 Total Agency RMBS pass-through — 7,701,523 7,701,523 — 8,050,866 8,050,866 Agency-CMO — 30,757 30,757 — — — Non-Agency CMBS 62,909 — 62,909 109,583 — 109,583 Non-Agency RMBS 7,288 1,782 9,070 7,267 4,466 11,733 Total 70,197 7,734,062 7,804,259 116,850 8,055,332 8,172,182 The components of the carrying value of our MBS portfolio at December 31, 2021 and 2020 are presented below. December 31, 2021 December 31, 2020 $ in thousands MBS Interest-Only Securities Total MBS Interest-Only Securities Total Principal/notional balance 7,584,812 618,603 8,203,415 7,757,491 800,426 8,557,917 Unamortized premium 250,771 — 250,771 391,644 — 391,644 Unamortized discount (11,902) (582,553) (594,455) (10,067) (795,018) (805,085) Allowance for credit losses — — — (1,768) — (1,768) Gross unrealized gains (1) 8,754 109 8,863 34,539 103 34,642 Gross unrealized losses (1) (60,741) (3,594) (64,335) (4,527) (641) (5,168) Fair value 7,771,694 32,565 7,804,259 8,167,312 4,870 8,172,182 (1) Gross unrealized gains and losses includes gains (losses) recognized in net income for securities accounted for under the fair value option as well as gains (losses) for available-for-sale securities which are recognized as adjustments to other comprehensive income. Realization occurs upon sale or settlement of such securities. Further detail on the components of our total gains (losses) on investments, net for the years ended December 31, 2021 and 2020 is provided below within this Note 4. The following table summarizes our MBS portfolio according to estimated weighted average life classifications as of December 31, 2021 and 2020. $ in thousands December 31, 2021 December 31, 2020 Less than one year 23,150 22,112 Greater than one year and less than five years 891,510 5,303,917 Greater than or equal to five years 6,889,599 2,846,153 Total 7,804,259 8,172,182 The following tables present the estimated fair value and gross unrealized losses of our MBS by length of time that such securities have been in a continuous unrealized loss position at December 31, 2021 and 2020. December 31, 2021 Less than 12 Months 12 Months or More Total $ in thousands Fair Unrealized Number of Securities Fair Unrealized Number of Securities Fair Unrealized Number of Securities Agency RMBS: 30 year fixed-rate 6,838,999 (60,741) 54 — — — 6,838,999 (60,741) 54 Total Agency RMBS pass-through (1) 6,838,999 (60,741) 54 — — — 6,838,999 (60,741) 54 Agency-CMO (1) 21,810 (1,389) 5 — — — 21,810 (1,389) 5 Non-Agency RMBS (2) 767 (1,132) 5 1,042 (1,073) 9 1,809 (2,205) 14 Total 6,861,576 (63,262) 64 1,042 (1,073) 9 6,862,618 (64,335) 73 (1) Fair value option has been elected for all Agency securities in an unrealized loss position. (2) Includes non-Agency IO with fair value of $1.7 million for which the fair value option has been elected. Such securities have unrealized losses of $2.1 million. The remaining $136,000 of unrealized losses on non-Agency RMBS are included in accumulated other comprehensive income. These losses are not reflected in an allowance for credit losses based on a comparison of discounted expected cash flows to current amortized cost basis. December 31, 2020 Less than 12 Months 12 Months or More Total $ in thousands Fair Unrealized Number of Securities Fair Unrealized Number of Securities Fair Unrealized Number of Securities Agency RMBS: 30 year fixed-rate 1,496,279 (4,108) 20 — — — 1,496,279 (4,108) 20 Total Agency RMBS pass-through (1) 1,496,279 (4,108) 20 — — — 1,496,279 (4,108) 20 Non-Agency CMBS (2) 27,069 (419) 1 — — — 27,069 (419) 1 Non-Agency RMBS (3) 2,681 (438) 6 1,612 (203) 7 4,293 (641) 13 Total 1,526,029 (4,965) 27 1,612 (203) 7 1,527,641 (5,168) 34 (1) Fair value option has been elected for all Agency RMBS in an unrealized loss position. (2) Unrealized losses on non-Agency CMBS are included in accumulated other comprehensive income. These losses are not reflected in an allowance for credit losses based on a comparison of discounted expected cash flows to current amortized cost basis. (3) Fair value option has been elected for all non-Agency RMBS in an unrealized loss position. On January 1, 2020, we adopted accounting guidance that requires us to estimate an allowance for credit losses on available-for-sale securities in unrealized loss positions. As of December 31, 2020, we had recorded an allowance for credit losses of $1.8 million on a single non-Agency CMBS on our consolidated balance sheet. We recorded a $1.8 million decrease in the provision for credit losses on our consolidated statement of operations during the year ended December 31, 2021. As of December 31, 2021, we do not have an allowance for credit losses recorded on our consolidated balance sheet. During the year ended December 31, 2020, we recorded impairments of $94.1 million on our consolidated statement of operations because we intended to sell or more likely than not would be required to sell the securities before recovery of amortized cost basis. The following table presents a roll-forward of our allowance for credit losses. $ in thousands Years Ended December 31, 2021 2020 Beginning allowance for credit losses (1,768) — Additions to the allowance for credit losses on securities for which credit losses were not previously recorded — (1,768) Additional increases or decreases in the allowance for credit losses on securities that had an allowance recorded in a previous period 1,768 — Ending allowance for credit losses — (1,768) Before January 1, 2020, we assessed our investment securities for other-than-temporary impairment (“OTTI”) on a quarterly basis. When the fair value of an investment was less than its amortized cost at the balance sheet date of the reporting period for which impairment is assessed, the impairment is designated as either “temporary” or “other-than-temporary.” This analysis included a determination of estimated future cash flows through an evaluation of the characteristics of the underlying loans and the structural features of the investment. Underlying loan characteristics reviewed included, but were not limited to, delinquency status, loan-to-value ratios, borrower credit scores, occupancy status and geographic concentration. The following table represents OTTI included in earnings for the year ended December 31, 2019. Year Ended December 31, $ in thousands 2019 RMBS interest-only securities 6,707 Non-Agency RMBS (1) 1,024 Total 7,731 (1) Amounts disclosed relate to credit losses on debt securities for which a portion of an other-than-temporary impairment was recognized in other comprehensive income. OTTI on RMBS interest-only securities was recorded as a reclassification from an unrealized to realized loss within gain (loss) on investments, net on the consolidated statements of operations because we account for these securities under the fair value option. The following table summarizes the components of our total gain (loss) on investments, net for the years ended December 31, 2021, 2020 and 2019. Years Ended December 31, $ in thousands 2021 2020 2019 Gross realized gains on sale of investments 3,297 656,915 24,721 Gross realized losses on sale of investments (284,521) (1,020,696) (16,682) Impairment of investments the Company intends to sell or more likely than not will be required to sell before recovery of amortized cost basis and other impairments — (101,138) — Other-than-temporary impairment losses — — (7,731) Net unrealized gains (losses) on MBS and GSE CRT accounted for under the fair value option (85,702) (492,047) 624,158 Net unrealized gains (losses) on commercial loan 417 (1,164) — Realized loss on loan participation interest — (3,808) — Total gain (loss) on investments, net (366,509) (961,938) 624,466 The following tables present components of interest income recognized on our MBS and GSE CRT portfolio for the years ended December 31, 2021, 2020 and 2019. GSE CRT interest income excludes coupon interest associated with embedded derivatives not accounted for under the fair value option of $6.3 million and $20.8 million for the years ended December 31, 2020 and 2019, respectively, that was recorded as realized and unrealized credit derivative income (loss), net. For the Year ended December 31, 2021 $ in thousands Coupon Net (Premium Interest Agency RMBS 201,694 (41,881) 159,813 Non-Agency CMBS 3,841 2,695 6,536 Non-Agency RMBS 1,950 (1,264) 686 Other 21 — 21 Total 207,506 (40,450) 167,056 For the Year ended December 31, 2020 $ in thousands Coupon Net (Premium Amortization)/Discount Accretion Interest Agency RMBS 161,845 (32,737) 129,108 Agency CMBS 35,822 (1,744) 34,078 Non-Agency CMBS 76,068 14,721 90,789 Non-Agency RMBS 13,895 1,107 15,002 GSE CRT 10,232 (2,560) 7,672 Other 751 — 751 Total 298,613 (21,213) 277,400 For the Year ended December 31, 2019 $ in thousands Coupon Net (Premium Amortization)/Discount Accretion Interest Agency RMBS 488,650 (76,676) 411,974 Agency CMBS 88,462 (4,712) 83,750 Non-Agency CMBS 163,326 15,347 178,673 Non-Agency RMBS 52,857 13,164 66,021 GSE CRT 37,032 (7,842) 29,190 Other 3,049 — 3,049 Total 833,376 (60,719) 772,657

Other Assets

Other Assets	12 Months Ended
	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Other Assets	Other Assets The following table summarizes our other assets as of December 31, 2021 and 2020: $ in thousands December 31, 2021 December 31, 2020 Commercial loan, held-for-investment 23,515 23,098 Investments in unconsolidated ventures 12,476 16,408 Prepaid expenses and other assets 1,518 1,657 Total 37,509 41,163 In March 2021, we agreed to extend the contractual maturity of our commercial loan investment from February 2021 to February 2022 at the request of the borrower. The borrower continues to make current interest payments on the loan and posted additional cash reserves in connection with the loan modification. The loan had a principal balance of $23.9 million as of December 31, 2021 and 2020 and a weighted average coupon rate of 8.60% as of December 31, 2021 and 8.65% as of December 31, 2020. We recorded unrealized gains of $417,000 and unrealized losses of $1.2 million on this loan in our consolidated statements of operations during the years ended December 31, 2021 and December 31, 2020, respectively. In February 2022, we received a request from the borrower to extend the contractual maturity of our commercial loan investment to May 29, 2022. Refer to Note 15 - "Subsequent Events" for additional information. We have invested in unconsolidated ventures that are managed by an affiliate of our Manager. The unconsolidated ventures invest in our target assets. Refer to Note 14 - “Commitments and Contingencies” for additional details regarding our commitments to these unconsolidated ventures.

Borrowings

Borrowings	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Borrowings	Borrowings We have historically financed the majority of our investment portfolio through repurchase agreements and secured loans. We fully repaid our secured loans during the year ended December 31, 2020. The following tables summarize certain characteristics of our borrowings at December 31, 2021 and 2020. Refer to Note 7 - “Collateral Positions” for collateral pledged and held under our repurchase agreements and secured loans. December 31, 2021 $ in thousands Amount Weighted Weighted Repurchase Agreements - Agency RMBS 6,987,834 0.14 % 29 Total Borrowings 6,987,834 0.14 % 29 December 31, 2020 $ in thousands Amount Weighted Weighted Repurchase Agreements - Agency RMBS 7,228,699 0.21 % 14 Total Borrowings 7,228,699 0.21 % 14 Repurchase Agreements In the first half of 2020, we experienced unprecedented market conditions as a result of the COVID-19 pandemic. We received an unusually high number of margin calls from our repurchase agreement counterparties during March 2020 following significant spread widening in both Agency and non-Agency securities. As a result, we were unable to meet margin calls and were not in compliance with all of the financial covenants of our repurchase agreements as of March 31, 2020. While certain of our repurchase agreement counterparties permitted our repurchase agreements to remain outstanding while we were not in compliance, other counterparties seized and sold securities that we had posted as collateral for our repurchase agreements. As of May 7, 2020, we repaid all of our repurchase agreements that may have been in default. Gains and losses associated with the termination of these repurchase agreements during the year ended December 31, 2020 are reported as net gain (loss) on extinguishment of debt in our consolidated statement of operations. We resumed financing the purchase of Agency RMBS with repurchase agreements in July 2020. These repurchase agreements generally bear interest at a contractually agreed upon rate and have maturities of approximately one

Collateral Positions

Collateral Positions	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Collateral Positions	Collateral Positions The following table summarizes the fair value of collateral that we pledged and held under our repurchase agreements, interest rate swaps, currency forward contracts, and TBAs as of December 31, 2021 and 2020. Refer to Note 2 - “Summary of Significant Accounting Policies - Fair Value Measurements” for a description of how we determine fair value. MBS collateral pledged is included in mortgage-backed securities on our consolidated balance sheets. Cash collateral pledged on centrally cleared interest rate swaps and currency forward contracts is classified as restricted cash on our consolidated balance sheets. Cash collateral pledged on repurchase agreements and TBAs accounted for as derivatives is classified as due from counterparties on our consolidated balance sheets. Cash collateral held that is not restricted for use is included in cash and cash equivalents on our consolidated balance sheets and the liability to return the collateral is included in collateral held payable. Non-cash collateral held is only recognized if the counterparty defaults or if we sell the pledged collateral. As of December 31, 2021 and 2020, we did not recognize any non-cash collateral held on our consolidated balance sheets. $ in thousands As of Collateral Pledged December 31, 2021 December 31, 2020 Repurchase Agreements: Agency RMBS 7,326,175 7,614,935 Cash 3,527 700 Total repurchase agreements collateral pledged 7,329,702 7,615,635 Derivative instruments: Cash 4,458 378 Restricted cash 219,918 244,573 Total derivative instruments collateral pledged 224,376 244,951 Total collateral pledged: Agency RMBS 7,326,175 7,614,935 Cash 7,985 1,078 Restricted cash 219,918 244,573 Total collateral pledged 7,554,078 7,860,586 Collateral Held December 31, 2021 December 31, 2020 Repurchase Agreements: Cash — 1,916 Non-cash collateral 248 4,226 Total repurchase agreements collateral held 248 6,142 Derivative instruments: Cash 280 1,630 Total derivative instruments collateral held 280 1,630 Total collateral held: Cash 280 3,546 Non-cash collateral 248 4,226 Total collateral held 528 7,772 Repurchase Agreements Collateral pledged with our repurchase agreement counterparties is segregated in our books and records. The repurchase agreement counterparties have the right to resell and repledge the collateral posted but have the obligation to return the pledged collateral, or substantially the same collateral if agreed to by us, upon maturity of the repurchase agreement. Under the repurchase agreements, the respective lender retains the contractual right to mark the underlying collateral to fair value. We would be required to provide additional collateral to fund margin calls if the value of pledged assets declined. We intend to maintain a level of liquidity that will enable us to meet margin calls. As of December 31, 2021 and 2020, our repurchase agreement collateral ratio (MBS pledged as collateral/ repurchase agreement amount outstanding) was 105%. Interest Rate Swaps As of December 31, 2021 and 2020, all of our interest rate swaps were centrally cleared by a registered clearing organization such as the Chicago Mercantile Exchange (“CME”) and LCH Limited (“LCH”) through a Futures Commission Merchant (“FCM”). We are required to pledge initial margin and daily variation margin for our centrally cleared interest rate swaps that is based on the fair value of our contracts as determined by our FCM. Collateral pledged with our FCM is segregated in our books and records and can be in the form of cash or securities. Daily variation margin for centrally cleared interest rate swaps is characterized as settlement of the derivative itself rather than collateral and is recorded as gain (loss) on derivative instruments, net in our consolidated statements of operations. Certain of our FCM agreements include cross default provisions. TBAs and Currency Forward Contracts Our TBAs and currency forward contracts provide for bilateral collateral pledging based on market value as determined by our counterparties. Collateral pledged with our TBA and currency forward counterparties is segregated in our books and records and can be in the form of cash or securities. Our counterparties have the right to repledge the collateral posted and have the obligation to return the pledged collateral, or substantially the same collateral, if agreed to by us, as the market value of the contracts changes.

Derivatives and Hedging Activit

Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	Derivatives and Hedging Activities Risk Management Objective of Using Derivatives We are exposed to certain risks arising from both our business operations and economic conditions. We principally manage our exposures to a wide variety of business and operational risks through management of our core business activities. We manage economic risks, including interest rate, liquidity, credit and foreign exchange rate risk primarily by managing the amount, sources, and duration of our investments, borrowings, and the use of derivative financial instruments. Specifically, we use derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates or foreign exchange rates. Our derivative financial instruments are used to manage differences in the amount, timing, and duration of our known or expected cash receipts and our known or expected cash payments principally related to our investments and borrowings. The following table summarizes changes in the notional amount of our derivative instruments during 2021: $ in thousands Notional Amount as of December 31, 2020 Additions (1) Settlement, Termination, Expiration or Exercise (1) Notional Amount as Interest Rate Swaps (2)(3) 6,300,000 4,250,000 (2,500,000) 8,050,000 Interest Rate Swaptions — 1,000,000 (1,000,000) — Currency Forward Contracts 33,084 65,279 (84,767) 13,596 TBA Purchase Contracts 1,700,000 23,125,000 (23,225,000) 1,600,000 TBA Sale Contracts — (23,225,000) 23,225,000 — Total 8,033,084 5,215,279 (3,584,767) 9,663,596 (1) Excludes $7.3 billion of additions and terminations related to the transition of our interest rate swaps that were indexed to LIBOR to interest rate swaps that are indexed to SOFR. These transactions were accounted for under the FASB's reference rate reform relief. Refer to Note 2 - “Summary of Significant Accounting Policies” for additional information. (2) Notional amount as of December 31, 2021 excludes $1.3 billion of interest rate swaps with forward start dates. (3) Notional amount as of December 31, 2021 includes $6.3 billion of interest rate swaps whereby we pay interest at a fixed rate and receive interest at a floating rate and $1.8 billion of interest rate swaps whereby we pay interest at a floating rate and receive interest at a fixed rate. Refer to Note 7 - “Collateral Positions” for further information regarding our collateral pledged to and received from our derivative counterparties. Interest Rate Swaps Our repurchase agreements are usually settled on a short-term basis ranging from one month to six months. At each settlement date, we typically refinance each repurchase agreement at the market interest rate at that time. Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposures to interest rate movements. To accomplish these objectives, we primarily use interest rate swaps as part of our interest rate risk management strategy. Under the terms of the majority of our interest rate swap contracts, we make fixed-rate payments to a counterparty in exchange for the receipt of variable-rate amounts over the life of the agreements without exchange of the underlying notional amount. To a lesser extent, we also enter into interest rate swap contracts whereby we make floating-rate payments to a counterparty in exchange for the receipt of fixed-rate amounts as part of our overall risk management strategy. Amounts recorded in AOCI before we discontinued cash flow hedge accounting for our interest rate swaps are reclassified to interest expense on repurchase agreements on the consolidated statements of operations as interest is accrued and paid on the related repurchase agreements over the remaining life of the interest rate swap agreements. We reclassified $22.0 million as a decrease (2020: $23.8 million as a decrease; 2019: $23.7 million as a decrease) to interest expense for the year ended December 31, 2021. During the next 12 months, we estimate that $19.7 million will be reclassified as a decrease to interest expense, repurchase agreements. As of December 31, 2021, $30.1 million (2020: $52.1 million) of net unrealized gains on discontinued cash flow hedges are still included in accumulated other comprehensive income and will be reclassified to interest expense, repurchase agreements over a period of time through December 15, 2023. As of December 31, 2021 and 2020, we had interest rate swaps whereby we pay interest at a fixed rate and receive interest at a floating rate, excluding interest rate swaps with forward start dates, with maturities as shown in the table below. Floating rate interest on swaps held as of December 31, 2021 was based on SOFR and floating rate interest on swaps held as of December 31, 2020 was based on 1-month LIBOR. $ in thousands As of December 31, 2021 Maturities Notional Amount Weighted Average Fixed Pay Rate Weighted Average Floating Receive Rate Weighted Average Years to Maturity Less than 3 years 1,000,000 0.06 % 0.05 % 2.6 3 to 5 years 1,250,000 0.12 % 0.05 % 3.6 5 to 7 years 2,225,000 0.32 % 0.05 % 5.9 7 to 10 years 1,825,000 0.52 % 0.05 % 8.6 Total 6,300,000 0.30 % 0.05 % 5.7 $ in thousands As of December 31, 2020 Maturities Notional Amount Weighted Average Fixed Pay Rate Weighted Average Floating Receive Rate Weighted Average Years to Maturity 3 to 5 years 2,250,000 0.20 % 0.15 % 4.2 5 to 7 years 1,775,000 0.43 % 0.15 % 6.7 7 to 10 years 2,275,000 0.60 % 0.15 % 9.2 Total 6,300,000 0.41 % 0.15 % 6.7 As of December 31, 2021, we held $1.3 billion notional amount of interest rate swaps with forward start dates that will receive floating interest based on SOFR with a weighted average maturity of 20.8 years and a weighted average fixed pay rate of 0.99%. We did not hold any interest rate swaps with forward start dates as of December 31, 2020. As of December 31, 2021, we had interest rate swaps whereby we pay floating interest based on SOFR and receive interest at a fixed rate with maturities as shown in the table below. We did not hold any interest rate swaps that paid floating interest as of December 31, 2020. $ in thousands As of December 31, 2021 Maturities Notional Amounts Weighted Average Floating Pay Rate Weighted Average Fixed Receive Rate Weighted Average Years to Maturity Less than 3 years 1,000,000 0.05 % 0.77 % 2.6 5 to 7 years 500,000 0.05 % 1.26 % 6.9 7 to 10 years 250,000 0.05 % 1.27 % 10.0 Total 1,750,000 0.05 % 0.98 % 4.9 Swaptions, Futures and Currency Forward Contracts We periodically purchase interest rate swaptions to help mitigate the potential impact of increases or decreases in interest rates on the performance of our Agency RMBS portfolio (referred to as “convexity risk”). The interest rate swaptions provide us the option to enter into interest rate swap agreements for a predetermined notional amount, stated term and pay and receive interest rates in the future. The premium paid for interest rate swaptions is reported as a derivative asset in our consolidated balance sheets. The premium is valued at an amount equal to the fair value of the swaption that would have the effect of closing the position adjusted for nonperformance risk, if any. The difference between the premium and the fair value of the swaption is reported in gain (loss) on derivative instruments, net in our consolidated statements of operations. If an interest rate swaption expires unexercised, the loss on the interest rate swaption would equal the premium paid. If we sell or exercise an interest rate swaption, the realized gain or loss on the interest rate swaption would equal the difference between the cash or the fair value of the underlying interest rate swap received and the premium paid. We purchase or sell futures contracts to help mitigate the potential impact of changes in interest rates on the performance of our investment portfolio. We recognize realized and unrealized gains and losses associated with the purchases or sales of futures contracts in gain (loss) on derivative instruments, net in our consolidated statements of operations. We did not have any futures contracts outstanding as of December 31, 2021 and December 31, 2020. We use currency forward contracts to help mitigate the potential impact of changes in foreign currency exchange rates on our investments denominated in foreign currencies. We recognize realized and unrealized gains and losses associated with the purchases or sales of currency forward contracts in gain (loss) on derivative instruments, net in our consolidated statements of operations. As of December 31, 2021, we had $13.6 million (December 31, 2020: $33.1 million) of notional amount of currency forward contracts related to an investment in an unconsolidated venture denominated in euro. Credit Derivatives Our GSE CRTs purchased before August 24, 2015 were accounted for as hybrid financial instruments consisting of a debt host contract and an embedded credit derivative. Embedded derivatives associated with GSE CRTs were recorded within mortgage-backed and credit risk transfer securities, at fair value, on our consolidated balance sheets. We did not hold any GSE CRTs that were accounted for as hybrid financial instruments as of December 31, 2021 and 2020. TBAs We primarily use TBAs that we do not intend to physically settle on the contractual settlement date as an alternative means of investing in and financing Agency RMBS. The following table summarizes certain characteristics of our TBAs accounted for as derivatives as of December 31, 2021 and 2020. $ in thousands As of December 31, 2021 Notional Amount Implied Cost Basis Implied Market Value Net Carrying Value TBA purchase contracts 1,600,000 1,636,906 1,633,955 (2,951) $ in thousands As of December 31, 2020 Notional Amount Implied Cost Basis Implied Market Value Net Carrying Value TBA purchase contracts 1,700,000 1,772,211 1,782,104 9,893 Tabular Disclosure of the Effect of Derivative Instruments on the Balance Sheet The table below presents the fair value of our derivative financial instruments, as well as their classification on our consolidated balance sheets as of December 31, 2021 and 2020. $ in thousands Derivative Assets Derivative Liabilities As of December 31, 2021 As of December 31, 2020 As of December 31, 2021 As of December 31, 2020 Balance Fair Value Fair Value Balance Fair Value Fair Value Interest Rate Swaps Asset — — Interest Rate Swaps Liability 11,405 5,537 Currency Forward Contracts 270 111 Currency Forward Contracts — 807 TBAs — 9,893 TBAs 2,951 — Total Derivative Assets 270 10,004 Total Derivative Liabilities 14,356 6,344 Tabular Disclosure of the Effect of Derivative Instruments on the Income Statement The tables below present the effect of our credit derivatives on our consolidated statements of operations for the years ended December 31, 2020 and 2019. $ in thousands Year ended December 31, 2020 Derivative Realized gain (loss), net GSE CRT embedded derivative coupon interest Unrealized Realized and unrealized credit derivative income (loss), net GSE CRT Embedded Derivatives (31,354) 6,323 (10,281) (35,312) $ in thousands Year Ended December 31, 2019 Derivative Realized gain (loss), net GSE CRT embedded derivative coupon interest Unrealized Realized and unrealized credit derivative income (loss), net GSE CRT Embedded Derivatives — 20,833 (12,490) 8,343 The following tables summarize the effect of interest rate swaps, swaptions, futures contracts, currency forward contracts and TBAs reported in gain (loss) on derivative instruments, net on the consolidated statements of operations for the years ended December 31, 2021, 2020 and 2019. $ in thousands Year ended December 31, 2021 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps 185,232 (15,803) (5,869) 163,560 Interest Rate Swaptions (553) — — (553) Currency Forward Contracts 209 — 970 1,179 TBAs (28,731) — (12,844) (41,575) Total 156,157 (15,803) (17,743) 122,611 $ in thousands Year ended December 31, 2020 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps (857,753) 8,047 (24,068) (873,774) Currency Forward Contracts (1,301) — (345) (1,646) TBAs 14,477 — 9,893 24,370 Total (844,577) 8,047 (14,520) (851,050) $ in thousands Year ended December 31, 2019 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps (440,626) 35,840 18,826 (385,960) Futures Contracts (157,929) — 7,836 (150,093) Currency Forward Contracts 1,478 — (180) 1,298 Total (597,077) 35,840 26,482 (534,755)

Offsetting Assets and Liabiliti

Offsetting Assets and Liabilities	12 Months Ended
	Dec. 31, 2021
Offsetting [Abstract]
Offsetting Assets and Liabilities	Offsetting Assets and Liabilities Certain of our repurchase agreements and derivative transactions are governed by underlying agreements that generally provide for a right of offset under master netting arrangements (or similar agreements) in the event of default or in the event of bankruptcy of either party to the transactions. Assets and liabilities subject to such arrangements are presented on a gross basis in the consolidated balance sheets. The following tables present information about the assets and liabilities that are subject to master netting arrangements (or similar agreements) and can potentially be offset on our consolidated balance sheets at December 31, 2021 and December 31, 2020. The daily variation margin payment for centrally cleared interest rate swaps is characterized as settlement of the derivative itself rather than collateral. Our derivative liability of $11.4 million at December 31, 2021 (December 31, 2020: liability of $5.5 million) related to centrally cleared interest rate swaps is not included in the table below as a result of this characterization of daily variation margin. As of December 31, 2021 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 270 — 270 — (270) — Total Assets 270 — 270 — (270) — Liabilities Derivatives (1) (2) (2,951) — (2,951) — 2,951 — Repurchase Agreements (3) (6,987,834) — (6,987,834) 6,987,834 — — Total Liabilities (6,990,785) — (6,990,785) 6,987,834 2,951 — As of December 31, 2020 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 10,004 — 10,004 (111) (1,630) 8,263 Total Assets 10,004 — 10,004 (111) (1,630) 8,263 Liabilities Derivatives (1) (2) (807) — (807) 111 610 (86) Repurchase Agreements (3) (7,228,699) — (7,228,699) 7,228,699 — — Total Liabilities (7,229,506) — (7,229,506) 7,228,810 610 (86) (1) Amounts represent derivative assets and derivative liabilities which could potentially be offset against other derivative assets, derivative liabilities and cash collateral pledged or received. (2) Cash collateral pledged by us on our currency forward contracts, TBAs and centrally cleared interest rate swaps was $224.4 million and $245.0 million at December 31, 2021 and December 31, 2020, respectively. Cash collateral pledged on our centrally cleared interest rate swaps is settled against the fair value of these swaps and is therefore excluded from the tables above. We held cash collateral on our derivatives of $280,000 and $1.6 million as of December 31, 2021 and December 31, 2020, respectively.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Fair Value of Financial Instruments A three-level valuation hierarchy exists for disclosure of fair value measurements based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. Observable inputs reflect readily obtainable data from independent sources, while unobservable inputs reflect our market assumptions. The three levels are defined as follows: • Level 1 Inputs – Quoted prices for identical instruments in active markets. • Level 2 Inputs – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable. • Level 3 Inputs – Instruments with primarily unobservable value drivers. The following tables present our assets and liabilities measured at fair value on a recurring basis. December 31, 2021 Fair Value Measurements Using: $ in thousands Level 1 Level 2 Level 3 NAV as a practical expedient (2) Total at Assets: Mortgage-backed securities (1) — 7,804,259 — — 7,804,259 Derivative assets — 270 — — 270 Other assets (3) — — 23,515 12,476 35,991 Total assets — 7,804,529 23,515 12,476 7,840,520 Liabilities: Derivative liabilities — 14,356 — — 14,356 Total liabilities — 14,356 — — 14,356 December 31, 2020 Fair Value Measurements Using: $ in thousands Level 1 Level 2 Level 3 NAV as a practical expedient (2) Total at Assets: Mortgage-backed securities (1) — 8,172,182 — — 8,172,182 Derivative assets — 10,004 — — 10,004 Other assets (3) — — 23,098 16,408 39,506 Total assets — 8,182,186 23,098 16,408 8,221,692 Liabilities: Derivative liabilities — 6,344 — — 6,344 Total liabilities — 6,344 — — 6,344 (1) For more detail about the fair value of our MBS, refer to Note 4 - “Mortgage-Backed and Credit Risk Transfer Securities.” (2) Investments in unconsolidated ventures are valued using the net asset value (“NAV”) as a practical expedient and are not subject to redemption, although investors may sell or transfer their interest at the approval of the general partner of the underlying funds. As of December 31, 2021, both of the unconsolidated ventures are in liquidation and plan to sell or settle their remaining investments as expeditiously as possible. (3) Includes $23.5 million and $23.1 million of a commercial loan investment as of December 31, 2021 and 2020, respectively. We elected the fair value option for our commercial loan investment as of January 1, 2020 and valued the loan based on a third party appraisal as of December 31, 2021 and 2020. The following table shows a reconciliation of the beginning and ending fair value measurements of our GSE CRT embedded derivatives which we valued utilizing Level 3 inputs: Year Ended $ in thousands December 31, 2020 Beginning balance 10,281 Sales and settlements 31,354 Total net credit derivative gains (losses) included in net income: Realized credit derivative gains (losses), net (31,354) Unrealized credit derivative gains (losses), net (10,281) Ending balance — The following table shows a reconciliation of the beginning and ending fair value measurements of our loan participation interest which we valued utilizing Level 3 inputs: Year Ended $ in thousands December 31, 2020 Beginning balance 44,654 Purchases/Advances — Repayments (19,269) Sales (21,577) Total net gains (losses) included in net income: Realized losses (3,808) Ending balance — Realized losses on our loan participation interest were included in gain (loss) on investments, net in our consolidated statements of operations. The following table shows a reconciliation of the beginning and ending balance of our commercial loan investment which we have valued utilizing Level 3 inputs: Years Ended $ in thousands December 31, 2021 December 31, 2020 Beginning balance 23,098 24,055 Cumulative effect of adoption of new accounting principle — 342 Repayments — (136) Total net unrealized gains (losses) included in net income: Unrealized gain (loss) 417 (1,163) Ending balance 23,515 23,098 Unrealized gain (loss) on our commercial loan investment are included in gain (loss) on investments, net in our consolidated statements of operations. We elected the fair value option for this loan on January 1, 2020 when we implemented the new accounting guidance for how entities report credit losses for assets measured at amortized cost. The following table summarizes the significant unobservable input used in the fair value measurement of our commercial loan investment: Fair Value at Valuation Unobservable $ in thousands December 31, 2021 Technique Input Rate Commercial Loan 23,515 Discounted Cash Flow Discount rate 18.8 % Fair Value at Valuation Unobservable $ in thousands December 31, 2020 Technique Input Rate Commercial Loan 23,098 Discounted Cash Flow Discount rate 29.9 % The following table presents the carrying value and estimated fair value of our financial instruments that are not carried at fair value on the consolidated balance sheets at December 31, 2021 and December 31, 2020: December 31, 2021 December 31, 2020 $ in thousands Carrying Estimated Carrying Estimated Financial Liabilities: Repurchase agreements 6,987,834 6,987,806 7,228,699 7,228,719 Total 6,987,834 6,987,806 7,228,699 7,228,719 The following describes our methods for estimating the fair value for financial instruments not carried at fair value on the consolidated balance sheets. • The estimated fair value of repurchase agreements is a Level 3 fair value measurement based on an expected present value technique. This method discounts future estimated cash flows using rates we determined best reflect current market interest rates that would be offered for repurchase agreements with similar characteristics and credit quality.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Our Manager is at all times subject to the supervision and oversight of our Board of Directors and has only such functions and authority as we delegate to it. Under the terms of our management agreement, our Manager and its affiliates provide us with our management team, including our officers and appropriate support personnel. Each of our officers is an employee of our Manager or one of its affiliates. We do not have any employees. Our Manager is not obligated to dedicate any of its employees exclusively to us, nor is our Manager obligated to dedicate any specific portion of time to our business. During the year ended December 31, 2021, we reimbursed our Manager $1.1 million (2020: $1.1 million; 2019: $917,000) for costs of support personnel. We invested $1.9 million in money market or mutual funds managed by affiliates of our Manager as of December 31, 2020. The investments are reported as cash and cash equivalents on our consolidated balance sheets as they are highly liquid and have original or remaining maturities of three months or less when purchased. We did not have any investments in money market of mutual funds managed by affiliates of our Manager as of December 31, 2021. During the year ended December 31, 2020, we sold non-Agency CMBS to affiliates of our Manager for cash proceeds of $40.0 million and recognized a realized gain of $4.1 million. Management Fee We pay our Manager a fee equal to 1.50% of our stockholders' equity per annum. For purposes of calculating the management fee, stockholders' equity is calculated as average month-end stockholders' equity for the prior calendar quarter as determined in accordance with U.S. GAAP. Stockholders' equity may exclude one-time events due to changes in U.S. GAAP and certain non-cash items upon approval by a majority of our independent directors. We do not pay any management fees on our investments in unconsolidated ventures that are managed by an affiliate of our Manager. Expense Reimbursement We are required to reimburse our Manager for operating expenses incurred on our behalf, including directors and officers insurance, accounting services, auditing and tax services, legal services, filing fees, and miscellaneous general and administrative costs. Our reimbursement obligation is not subject to any dollar limitation. The following table summarizes the costs incurred on our behalf by our Manager for the years ended December 31, 2021, 2020 and 2019. Years ended December 31, $ in thousands 2021 2020 2019 Incurred costs, prepaid or expensed 7,108 10,845 7,343 Incurred costs, charged against equity as a cost of raising capital 692 239 950 Total incurred costs, originally paid by our Manager 7,800 11,084 8,293 Termination Fee If we terminate our management agreement, we owe our Manager a termination fee equal to three times the sum of our average annual management fee during the 24-month period before termination, calculated as of the end of the most recently completed fiscal quarter.

Stockholders' Equity

Stockholders' Equity	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Preferred Stock On June 16, 2021, we redeemed all issued and outstanding shares of our Series A Preferred Stock for $140.0 million plus accrued and unpaid dividends. The cash redemption price for each share of Series A Preferred Stock was $25.00. The excess of the consideration transferred over carrying value was accounted for as a deemed dividend and resulted in a reduction of $4.7 million in net income (loss) attributable to common stockholders during the year ended December 31, 2021. Prior to redemption, holders of our Series A Preferred Stock were entitled to receive dividends at an annual rate of 7.75% of the liquidation preference of $25.00 per share or $1.9375 per share per annum. Dividends were cumulative and payable quarterly in arrears. Holders of our Series B Preferred Stock are entitled to receive dividends at an annual rate of 7.75% of the liquidation preference of $25.00 per share or $1.9375 per share per annum until December 27, 2024. After December 27, 2024, holders are entitled to receive dividends at a floating rate equal to three-month LIBOR plus a spread of 5.18% of the $25.00 liquidation preference per annum. Dividends are cumulative and payable quarterly in arrears. Holders of our Series C Preferred Stock are entitled to receive dividends at an annual rate of 7.50% of the liquidation preference of $25.00 per share or $1.875 per share per annum until September 27, 2027. After September 27, 2027, holders are entitled to receive dividends at a floating rate equal to three-month LIBOR plus a spread of 5.289% of the $25.00 liquidation preference per annum. Dividends are cumulative and payable quarterly in arrears. We have the option to redeem shares of our Series B Preferred Stock after December 27, 2024 and shares of our Series C Preferred Stock after September 27, 2027 for $25.00 per share, plus any accumulated and unpaid dividends through the date of the redemption. Shares of Series B and Series C Preferred Stock are not redeemable, convertible into or exchangeable for any other property or any other securities of the Company before those times, except under circumstances intended to preserve our qualification as a REIT or upon the occurrence of a change in control. As of December 31, 2021, we may sell up to 5,500,000 shares of our preferred stock from time to time in at-the-market or privately negotiated transactions under an equity distribution agreement with a placement agent. These shares are registered with the SEC under our shelf registration statement (as amended and/or supplemented). We have not sold any shares of preferred stock under the equity distribution agreement. Common Stock In February 2021, we completed a public offering of 27,600,000 shares of common stock at the price of $3.75 per share. Total net proceeds were approximately $103.1 million after deducting offering expenses. In June 2021, we completed a public offering of 43,125,000 shares of common stock at the price of $3.39 per share. Total net proceeds were approximately $145.9 million after deducting offering expenses. As of December 31, 2021, we may sell up to 56,865,980 shares of our common stock from time to time in at-the-market or privately negotiated transactions under our equity distribution agreement with placement agents. These shares are registered with the SEC under our shelf registration statement (as amended and/or supplemented). During the year ended December 31, 2021, we sold 55,744,020 shares (2020: 21,849,740 shares) of common stock under our equity distribution agreements for proceeds of $180.5 million (2020: $73.7 million) net of approximately $2.6 million (2020: $1.2 million) in commissions and fees. In May 2021, we granted 127,115 restricted shares of common stock to our independent directors. The restricted shares will become unrestricted shares of common stock on the first anniversary of the grant date unless forfeited, subject to certain conditions that accelerate vesting. Share Repurchase Program During the years ended December 31, 2021 and December 31, 2020, we did not repurchase any shares of our common stock. As of December 31, 2021, we had authority to purchase 18,163,982 shares of our common stock through our share repurchase program. Accumulated Other Comprehensive Income The following tables present the components of total other comprehensive income (loss), net and accumulated other comprehensive income (“AOCI”) at December 31, 2021 and December 31, 2020, respectively. The tables exclude gains and losses on MBS and GSE CRTs that are accounted for under the fair value option. December 31, 2021 $ in thousands Equity method investments Available-for-sale securities Derivatives and hedging Total Total other comprehensive income (loss) Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net — 756 — 756 Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense — — (22,000) (22,000) Currency translation adjustments on investment in unconsolidated venture (75) — — (75) Total other comprehensive income (loss) (75) 756 (22,000) (21,319) AOCI balance at beginning of period 499 5,993 52,113 58,605 Total other comprehensive income (loss) (75) 756 (22,000) (21,319) AOCI balance at end of period 424 6,749 30,113 37,286 December 31, 2020 $ in thousands Equity method investments Available-for-sale securities Derivatives and hedging Total Total other comprehensive income (loss) Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net — (223,416) — (223,416) Reclassification of unrealized (gain) loss on sale of mortgage-backed and credit risk transfer securities to gain (loss) on investments, net — 13,940 — 13,940 Reclassification of unrealized loss on available-for-sale securities to (increase) decrease in provision for credit losses — 1,768 — 1,768 Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense — — (23,794) (23,794) Currency translation adjustments on investment in unconsolidated venture 1,144 — — 1,144 Total other comprehensive income (loss) 1,144 (207,708) (23,794) (230,358) AOCI balance at beginning of period (645) 213,701 75,907 288,963 Total other comprehensive income (loss) 1,144 (207,708) (23,794) (230,358) AOCI balance at end of period 499 5,993 52,113 58,605 Amounts recorded in AOCI before we discontinued cash flow hedge accounting for our interest rate swaps are reclassified to interest expense on repurchase agreements on the consolidated statements of operations as interest is accrued and paid on the related repurchase agreements over the remaining original life of the interest rate swap agreements. Dividends We declared the following dividends during 2021 and 2020: $ in thousands, except per share amounts Dividends Declared Series A Preferred Stock Per Share In Aggregate Date of Payment 2021 (1) February 19, 2021 0.4844 2,713 April 26, 2021 2020 November 5, 2020 0.4844 2,713 January 25, 2021 September 10, 2020 0.4844 2,713 October 26, 2020 June 17, 2020 0.4844 2,712 July 27, 2020 March 17, 2020 0.4844 2,713 May 22, 2020 (1) On June 16, 2021, we paid a final dividend of $0.2691 per share ($1.5 million in aggregate) in connection with the redemption of our Series A Preferred Stock. The final dividend was treated as a component of the redemption price for tax purposes. $ in thousands, except per share amounts Dividends Declared Series B Preferred Stock Per Share In Aggregate Date of Payment 2021 November 2, 2021 0.4844 3,003 December 27, 2021 August 3, 2021 0.4844 3,003 September 27, 2021 May 4, 2021 0.4844 3,004 June 28, 2021 February 19, 2021 0.4844 3,003 March 29, 2021 2020 November 5, 2020 0.4844 3,003 December 28, 2020 August 5, 2020 0.4844 3,003 September 28, 2020 May 9, 2020 0.4844 3,004 June 29, 2020 February 18, 2020 0.4844 3,003 May 22, 2020 $ in thousands, except per share amounts Dividends Declared Series C Preferred Stock Per Share In Aggregate Date of Payment 2021 November 2, 2021 0.46875 5,391 December 27, 2021 August 3, 2021 0.46875 5,391 September 27, 2021 May 4, 2021 0.46875 5,390 June 28, 2021 February 19, 2021 0.46875 5,391 March 29, 2021 2020 November 5, 2020 0.46875 5,391 December 28, 2020 August 5, 2020 0.46875 5,391 September 28, 2020 May 9, 2020 0.46875 5,390 June 29, 2020 February 18, 2020 0.46875 5,391 May 22, 2020 $ in thousands, except per share amounts Dividends Declared Common Stock Per Share In Aggregate Date of Payment 2021 December 27, 2021 0.09 29,689 January 27, 2022 September 28, 2021 0.09 28,057 October 26, 2021 June 23, 2021 0.09 26,071 July 27, 2021 March 26, 2021 0.09 22,176 April 27, 2021 2020 December 28, 2020 0.08 16,258 January 26, 2021 September 30, 2020 0.05 9,070 October 27, 2020 June 17, 2020 0.02 3,626 July 28, 2020 March 17, 2020 0.50 82,483 June 30, 2020 On May 9, 2020, our board of directors approved payment of our common stock dividend that was declared on March 17, 2020 in a combination of cash and shares of our common stock. Stockholders had the opportunity to elect payment of the dividend all in cash or all in common shares, subject to a limit of 10% or approximately $8.2 million of cash in the aggregate (excluding any cash paid in lieu of issuing fractional shares). On June 30, 2020, we paid the dividend through the issuance of 16,338,511 shares of common stock and the payment of approximately $8.2 million in cash. The number of shares included in the dividend was calculated based on the $4.5435 volume weighted average trading price of our common stock on the New York Stock Exchange on June 17, 18 and 19, 2020. The following table sets forth the dividends declared per share of our preferred and common stock and their related tax characterization for the fiscal tax years ended December 31, 2021 and 2020. Tax Characterization of Dividends Fiscal Tax Year Dividends Declared in Prior Year and Taxable in Current Year Dividends Declared and Taxable in Current Year Ordinary Dividends Return of Capital Capital Gain Distribution Series A Preferred Stock Dividends Fiscal tax year 2021 0.484400 0.484400 0.968800 — — Fiscal tax year 2020 (1) 0.484400 1.453200 — 1.937600 — Series B Preferred Stock Dividends Fiscal tax year 2021 — 1.936700 1.936700 — — Fiscal tax year 2020 — 1.937600 — 1.937600 — Series C Preferred Stock Dividends Fiscal tax year 2021 — 1.875000 0.590720 1.284280 — Fiscal tax year 2020 — 1.875000 — 1.875000 — Common Stock Dividends Fiscal tax year 2021 (2) 0.080000 0.270000 — 0.350000 — Fiscal tax year 2020 (3) 0.500000 0.570000 — 1.070000 — (1) Excludes preferred stock dividend of $0.4844 per share declared on November 5, 2020 that had a record date of January 1, 2021. This dividend is a 2021 dividend for federal income tax purposes. (2) Excludes common stock dividend of $0.09 per share declared on December 27, 2021 that had a record date of January 11, 2022. This dividend is a 2022 dividend for federal income tax purposes. (3) Excludes common stock dividend of $0.08 per share declared on December 28, 2020 that had a record date of January 12, 2021. This dividend is a 2021 dividend for federal income tax purposes.

Earnings per Common Share

Earnings per Common Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Earnings per Common Share	Earnings per Common Share Earnings per share for the years ended December 31, 2021, 2020 and 2019 is computed as follows: In thousands except per share amounts Years Ended December 31, 2021 2020 2019 Numerator (Income) Basic Earnings: Net income (loss) available to common stockholders (132,477) (1,718,778) 319,675 Denominator (Weighted Average Shares) Basic Earnings: Shares available to common stockholders 275,132 173,730 132,306 Effect of dilutive securities: Restricted stock awards — — 12 Dilutive Shares 275,132 173,730 132,318 Earnings (loss) per share: Net income (loss) attributable to common stockholders Basic (0.48) (9.89) 2.42 Diluted (0.48) (9.89) 2.42 The following potential weighted average shares were excluded from diluted earnings per share as the effect would be anti-dilutive. For the year ended December 31, 2021, 16,061 shares for restricted stock awards. (December 31, 2020: 11,017 for restricted stock awards).

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and ContingenciesCommitments and contingencies may arise in the ordinary course of business. Our material off balance sheet commitments and contingencies as of December 31, 2021 are discussed below.As discussed in Note 5 - “Other Assets”, we have invested in unconsolidated ventures that are sponsored by an affiliate of our Manager. The unconsolidated ventures are structured as partnerships, and we invested in the partnerships as a limited partner. Both of the unconsolidated ventures are in liquidation and plan to sell or settle their remaining investments as expeditiously as possible. Until the ventures complete their liquidation, we are committed to fund $6.5 million in additional capital to cover future expenses should they occur.

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Dividends We declared the following dividends on February 16, 2022: a Series B Preferred Stock dividend of $0.4844 per share payable on March 28, 2022 to our stockholders of record as of March 5, 2022, and a Series C Preferred Stock dividend of $0.46875 per share payable on March 28, 2022 to our stockholders of record on March 5, 2022. Modification of Commercial Loan Investment In February 2022, we received a request from the borrower to extend the contractual maturity of our commercial loan investment to May 29, 2022. We are currently negotiating the terms of the modification and expect to extend the maturity date.

Schedule IV Mortgage Loans on R

Schedule IV Mortgage Loans on Real Estate	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]
Schedule IV Mortgage Loans on Real Estate	INVESCO MORTGAGE CAPITAL INC. AND SUBSIDIARIES Schedule IV Mortgage Loans on Real Estate As of December 31, 2021 $ in thousands Asset Type Property Type Location Interest Rate Maturity Date Periodic Payment Terms (1) Prior Liens Face Amount of Mortgages Carrying Amount of Mortgages Principal Amount of Loans Subject to Delinquent Principal or Interest Mezzanine Loan Hotel TX L+8.50% 2/28/2022 I — 23,919 23,515 — 23,919 23,515 (2) — (1) Interest (“I”) only until stated maturity of the loan. (2) The aggregate cost for federal income tax purposes is $23.9 million. Reconciliation of Carrying Value of Mortgage Loans on Real Estate: 2021 2020 2019 Beginning balance 23,098 24,055 31,582 Additions: Unrealized gain 417 — — Deductions: Collection of principal — 136 7,527 Unrealized loss — 821 — Ending balance 23,515 23,098 24,055

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and ConsolidationOur consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and consolidate the financial statements of the Company and our controlled subsidiaries. All significant intercompany transactions, balances, revenues and expenses are eliminated upon consolidation. In the opinion of management, the consolidated financial statements reflect all adjustments, consisting of normal recurring accruals, which are necessary for a fair statement of our financial condition and results of operations for the periods presented.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our consolidated financial statements and accompanying notes. Examples of estimates include, but are not limited to, estimates of the fair values of financial instruments, interest income on mortgage-backed and credit risk transfer securities and allowances for credit losses. Actual results may differ from those estimates.
Translation of Foreign Currencies	Translation of Foreign Currencies The functional currency of the Company and its subsidiaries is U.S. dollars. Transactions in foreign currencies are recorded at the rates of exchange prevailing on the date of the transactions. At each balance sheet date, monetary assets and liabilities that are denominated in foreign currencies are remeasured at the rates prevailing at the balance sheet date. Gains and losses arising on revaluation are included in other investment income (loss), net on the consolidated statements of operations. Our reporting currency is U.S. dollars. Upon consolidation, the assets and liabilities of our investment in an unconsolidated venture whose functional currency is the Euro is translated to U.S. dollars using the period-end exchange rates. Equity accounts are translated at historical rates, except for the change in retained earnings during the year, which is the result of the income statement translation process. Revenue and expense accounts are translated using the weighted average exchange rate during the period. The cumulative translation adjustments associated with the investment in the unconsolidated venture are recorded in accumulated other comprehensive income (loss), a component of consolidated stockholders’ equity.
Fair Value Measurements	Fair Value Measurements We report our MBS and GSE CRTs and derivative assets and liabilities at fair value as determined by an independent pricing service. We generally obtain one price per instrument from our primary pricing service. If the primary pricing service cannot provide a price, we will seek a value from other pricing services. The pricing service uses two types of valuation approaches to determine the valuation of our various mortgage-backed and credit risk transfer securities: a market approach, which uses observable prices and other relevant information that is generated by market transactions involving identical or comparable assets or liabilities; and an income approach, which uses valuation techniques to convert future amounts to a single, discounted present value amount. In instances where sufficient market activity may not exist, the pricing service may utilize proprietary valuation models that may consider market transactions in comparable securities and the various relationships between securities in determining fair value and/or market characteristics to estimate relevant cash flows, which are then discounted to calculate the fair values. Observable inputs may include a combination of benchmark yields, executed trades, broker/dealer quotes, issuer spreads, bids, offers and benchmark securities. In addition, the valuation models utilized by pricing services may consider additional pool level information such as prepayment speeds, default frequencies and default severities, if applicable. We and the pricing service continuously monitor market indicators and economic events to determine whether they may have an impact on our valuations. The pricing service values interest rate swaps, U.S. Treasury futures (“futures”), currency forward contracts and to-be-announced securities (“TBAs”) under the market approach through the use of quoted prices available in an active market. Overrides of prices from pricing services are rare in the current market environment for the assets we hold. Examples of instances that would cause an override include if we recently traded the same security or there is an indication of market activity that would cause the pricing service price to no longer be indicative of fair value. In the rare instance where a price is adjusted, we have a control process to monitor the reason for such adjustment. To gain comfort that pricing service prices are representative of current market information, we compare the transaction prices of security purchases and sales to the valuation levels provided by the pricing services. Price differences exceeding pre-defined tolerance levels are identified and investigated and may be challenged. Trends are monitored over time and if there are indications that the valuations are not comparable to market activity, the pricing services are asked to provide detailed information regarding their methodology and inputs. Transparency tools are also available from the pricing services which help us understand data points and/or market inputs used for pricing securities. We also review daily price movements for interest rate swaps, futures, currency forward contracts and TBAs. Price movements exceeding pre-defined tolerance levels are investigated using an alternate price from another pricing service as well as available market information. Based on our findings, the primary pricing service may be challenged, or in rare cases, overridden with an alternate pricing source. In addition, we perform due diligence procedures on all pricing services on at least an annual basis. A questionnaire is sent to pricing services which requests information such as changes in methodologies, business recovery preparedness, internal controls and confirmation that evaluations are generated based on market data. Physical visits are also made to each pricing service's office. Virtual visits may take place in lieu of physical visits given concerns surrounding the COVID-19 pandemic. An independent pricing service values our commercial loan investment using a discounted cash flow analysis. The yield used in the discounted cash flow analysis is determined by comparing the features of the loan to the interest rates and terms required by lenders in the new loan origination market for similar loans and the yield required by investors acquiring mezzanine loans in the secondary market as well as a comparison of current market and collateral conditions to those present at origination. As described in Note 10 - “Fair Value of Financial Instruments,” we evaluate the source used to fair value our assets and liabilities and make a determination on its categorization within the fair value hierarchy. If the price of a security is obtained from quoted prices for identical instruments in active markets, the security is classified as a level 1 security. If the price of a security is obtained from quoted prices for similar instruments or model-derived valuations whose inputs are observable, the security is classified as a level 2 security. If the inputs appear to be unobservable, the security would be classified as a level 3 security. Transfers between levels, if any, are determined at the end of the reporting period.
Mortgage-Backed and Credit Risk Transfer Securities	Mortgage-Backed and Credit Risk Transfer Securities We record our purchases of MBS and GSE CRTs on the trade date and report these securities at fair value as described above in the Fair Value Measurements section of this Note 2 to our consolidated financial statements. Approximately $7.7 billion (99%) of our MBS are accounted for under the fair value option as of December 31, 2021 (December 31, 2020: $8.1 billion or 99%). Under the fair value option, we recognize changes in fair value in our consolidated statements of operations as unrealized gains and losses. In our view, this election more appropriately reflects the results of our operations because fair value changes are accounted for in the same manner as fair value changes in our economic hedging instruments. We elected the fair value option for all MBS purchased on or after September 1, 2016, GSE CRTs purchased on or after August 24, 2015 and all RMBS interest-only securities. We classify the remaining balance of our MBS as available-for-sale ($70.2 million or 1% as of December 31, 2021; $116.9 million or 1% as of December 31, 2020). Unrealized gains or losses on available-for-sale securities are recorded in accumulated other comprehensive income, a separate component of stockholders' equity, until sale or disposition of the investment. Upon sale or disposition, the cumulative gain or loss previously reported in stockholders' equity is recognized in income. Realized gains and losses from sales of MBS are determined based upon the specific identification method. GSE CRTs purchased before August 24, 2015 were reported at fair value and accounted for as hybrid financial instruments consisting of a debt host contract and an embedded derivative. Unrealized gains or losses arising from changes in fair value of the debt host contract, excluding other-than-temporary impairment, were recognized in accumulated other comprehensive income until sale or disposition of the investment. Upon sale or disposition of the debt host contract, the cumulative gain or loss previously reported in stockholders’ equity was recognized in income. Realized and unrealized gains or losses arising from changes in fair value of the embedded derivative were recognized in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. We elected the fair value option for GSE CRTs purchased on or after August 24, 2015 due to the complexities associated with bifurcation of GSE CRTs into a debt host contract and an embedded derivative. Realized gains and losses from sales of GSE CRTs were determined based upon the specific identification method. Our interest income recognition policies for MBS and GSE CRTs are described below in the Interest Income Recognition section of this Note 2 to our consolidated financial statements. Allowances for Credit Losses on Available-for-Sale Securities We are not required to measure expected credit losses for situations in which historic credit loss information, adjusted for current conditions and reasonable and supportable forecasts, results in an expectation that nonpayment of the amortized cost basis is zero. We consider our Agency portfolio to have zero loss expectation because (i) there have been no historical credit losses, (ii) full and timely payment of principal and interest is guaranteed by the GSEs and (iii) the yields, while not risk free, generally trade based on prepayment and liquidity risk as opposed to credit risk. For non-Agency RMBS and non-Agency CMBS, we use a discounted cash flow method to estimate and recognize an allowance for credit losses. We calculate the allowance for credit losses as the difference between the investment's amortized cost basis and expected cash flows discounted at the effective interest rate used to recognize interest income on the investment. In developing an expectation of credit losses, we use internal models that analyze the loans underlying each investment and evaluate factors including, but not limited to, delinquency status, loan-to-value ratios, borrower credit scores, occupancy status and geographic concentration. We place reliance on these internal models in determining credit quality. We record an allowance for credit losses as a contra-asset on the consolidated balance sheets and a provision for credit losses in the consolidated statements of operations. Credit losses are accreted into earnings over time at the effective interest rate used to recognize interest income. Subsequent favorable or adverse changes in the amount of expected credit losses are recognized immediately in earnings. If the allowance for credit losses has been reduced to zero, we reflect the remaining favorable changes as a prospective adjustment to the effective interest rate of the investment. The allowance for credit losses is limited to the amount by which the investment’s amortized cost exceeds fair value. When the allowance for credit losses is limited, the effective interest rate used to recognize interest income and accrete credit losses is prospectively adjusted. We do not record an allowance for credit losses when an investment’s fair value exceeds its amortized cost. Recoveries of amounts previously written off relating to improvements in cash flows are recognized in earnings when received. We record provisions for credit losses, reductions in provisions for credit losses, accretion of credit losses, and recoveries of amounts previously written off within (increase) decrease in provision for credit losses in our consolidated statements of operations. When we determine that we intend to sell, or more likely than not will be required to sell, an available-for-sale security in an unrealized loss position before we recover its amortized cost, we write off any allowance for credit losses and write down the investment’s amortized cost to its fair value. We record the write off of the allowance for credit losses within (increase) decrease in provision for credit losses on our consolidated statements of operations and write down of the available-for-sale security within gain (loss) on investments, net in our consolidated statements of operations.
Commercial Loans Held-For-Investment	Commercial Loans Held-For-InvestmentAs of January 1, 2020, we report our commercial loan investment at fair value as described in the Fair Value Measurements section of this Note 2 to the consolidated financial statements. We record changes in fair value within gain (loss) on investments, net in our consolidated statements of operations. Before January 1, 2020, we carried commercial loans held-for-investment at amortized cost, net of any provision for loan losses.
Interest Income Recognition	Interest Income Recognition Mortgage-Backed Securities Interest income on MBS is accrued based on the outstanding principal or notional balance of the securities and their contractual terms. Premiums or discounts are amortized or accreted into interest income over the life of the investment using the effective interest method. Interest income on our MBS where we may not recover substantially all of our initial investment is based on estimated future cash flows. We estimate future expected cash flows at the time of purchase and determine the effective interest rate based on these estimated cash flows and our purchase price. Over the life of the investments, we update these estimated future cash flows and compute a revised yield based on the current amortized cost of the investment, unless those changes are reflected in an allowance for credit losses. In situations where an allowance for credit losses is limited by the fair value of the investment, we compute the yield as the rate that equates expected future cash flows to the current fair value of the investment. In estimating these future cash flows, there are a number of assumptions that are subject to uncertainties and contingencies, including but not limited to the rate and timing of principal payments (prepayments, repurchases, defaults and liquidations), the pass through or coupon rate, and interest rate fluctuations. These uncertainties and contingencies are difficult to predict and are subject to future events that may impact our estimate and our interest income. Changes in our original or most recent cash flow projections may result in a prospective change in interest income recognized on these securities, or the amortized cost of these securities, including write-offs of amortized cost when certain amounts are deemed uncollectible. For non-Agency RMBS not of high credit quality, when actual cash flows vary from expected cash flows, the difference is recorded as an adjustment to the amortized cost of the security, unless those changes are reflected in an allowance for credit losses, and the security's yield is revised prospectively. For Agency RMBS and Agency CMBS that cannot be prepaid in such a way that we would not recover substantially all of our initial investment, interest income recognition is based on contractual cash flows. We do not estimate prepayments in applying the effective interest method. Credit Risk Transfer Securities Interest income on GSE CRTs purchased before August 24, 2015 was accrued based on the coupon rate of the debt host contract which reflected the credit risk of GSE unsecured senior debt with a similar maturity. Premiums or discounts associated with the purchase of GSE CRTs were amortized or accreted into interest income over the life of the debt host contract using the effective interest method. The difference between the coupon rate on the hybrid instrument and the coupon rate on the debt host contract was considered premium income associated with the embedded derivative and was recorded in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. Interest income on GSE CRTs purchased on or after August 24, 2015 was based on estimated future cash flows. Commercial and Other Loans We recognize interest income from commercial and other loans when earned and deemed collectible, or until a loan becomes past due based on the terms of the loan agreement. Any related origination fees or costs on commercial and others loans for which we have elected the fair value option are recognized immediately in earnings. Before our decision to elect the fair value option for commercial and other loans, any related origination fees, net of origination cost were amortized into interest income using the effective interest method over the life of the loan. Interest received after a loan becomes past due or impaired is used to reduce the outstanding loan principal balance. When a delinquent loan previously placed on nonaccrual status has cured, meaning all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternately, loans that have been individually impaired may be placed back on accrual status if restructured and after the loan is considered re-performing. A restructured loan is considered re-performing when the loan has been current for at least 12 months.
Cash and Cash Equivalents	Cash and Cash EquivalentsWe consider all highly liquid investments that have original or remaining maturity dates of three months or less when purchased to be cash equivalents.
Restricted Cash	Restricted CashRestricted cash represents cash posted with counterparties as collateral for various derivative instruments. Cash posted with counterparties as collateral is not available for general corporate purposes.
Due from Counterparties/Collateral Held Payable	Due from Counterparties / Collateral Held PayableDue from counterparties represents cash posted with our counterparties as collateral for our derivatives and repurchase agreements. Collateral held payable represents cash posted with us by counterparties as collateral under our derivatives and repurchase agreements. If we receive collateral other than cash from our counterparties, such assets are not included in our consolidated balance sheets. If we either sell such assets or pledge the assets as collateral under a repurchase agreement, the cash received and the corresponding liability is reflected on the consolidated balance sheets
Investment Related Receivable / Investment Related Payable	Investment Related Receivable / Investment Related Payable Investment related receivable consists of receivables for mortgage-backed securities that we have sold but have not settled with the buyer and accrued interest and principal paydowns on mortgage-backed securities. Accrued interest receivable was $16.8 million and $15.6 million as of December 31, 2021 and 2020, respectively. Investment related payable consists of liabilities for mortgage-backed securities that we have purchased but have not settled with the seller.
Investments in Unconsolidated Ventures	Investments in Unconsolidated VenturesOur non-controlling investments in unconsolidated ventures are included in other assets in our consolidated balance sheets and are accounted for under the equity method. Capital contributions, distributions, profits and losses of the entities are allocated in accordance with the terms of the entities’ operating agreements. Such allocations may differ from the stated percentage interests, if any, as a result of preferred returns and allocation formulas as described in the entities' operating agreements.
Repurchase Agreements	Repurchase Agreements We finance our purchases of mortgage-backed and credit risk transfer securities primarily through the use of repurchase agreements. Repurchase agreements are treated as collateralized financing transactions and are carried at their contractual amounts, including accrued interest, as specified in the respective agreements. We record the mortgage-backed securities and the related repurchase agreement financing on a gross basis in our consolidated balance sheets, and the corresponding interest income and interest expense on a gross basis in our consolidated statements of operations.
Secured Loans	Secured Loans Our wholly-owned subsidiary, IAS Services LLC, was a member of the Federal Home Loan Bank of Indianapolis (“FHLBI”). As a member of the FHLBI, IAS Services LLC borrowed funds from the FHLBI in the form of secured advances. FHLBI advances were treated as secured financing transactions and carried at their contractual amounts. During the year ended
Dividends Payable	Dividends PayableDividends payable represent dividends declared at the balance sheet date which are payable to common stockholders and preferred stockholders.
Earnings (Loss) per Share	Earnings (Loss) per Share We calculate basic earnings (loss) per share by dividing net income (loss) attributable to common stockholders for the period by the weighted-average number of shares of our common stock outstanding for that period. Diluted earnings per share takes into account the effect of dilutive instruments, such as unvested restricted stock awards, and uses the average share price for the period in determining the number of incremental shares that are to be added to the weighted-average number of shares outstanding.
Share-Based Compensation	Share-Based Compensation Under the terms of our 2009 Equity Incentive Plan (the “Incentive Plan”), our independent directors are eligible to receive stock awards as part of their compensation for serving as directors, In addition, we may compensate the officers and employees of our Manager and its affiliates under the Incentive Plan under the terms of our management agreement.
Underwriting Commissions and Offering Costs	Underwriting Commissions and Offering Costs Underwriting commissions and direct costs incurred in connection with our common and preferred stock offerings are recorded as a reduction of additional paid-in-capital and preferred stock, respectively.
Comprehensive Income	Comprehensive Income Our comprehensive income consists of net income, as presented in the consolidated statements of operations, adjusted for unrealized gains and losses on MBS purchased before September 1, 2016 and the debt host contract associated with GSE CRTs purchased before August 24, 2015; reclassification of unrealized losses on available-for-sale securities to (increase) decrease in provision for credit losses; reclassification of amortization of net deferred gains and losses on de-designated interest rate swaps to repurchase agreements interest expense and currency translation adjustments on an investment in an unconsolidated venture. Unrealized gains and losses on our MBS purchased before September 1, 2016 and the debt host contract associated with GSE CRTs purchased before August 24, 2015 are reclassified into net income upon their sale.
Accounting for Derivative Financial Instruments	Accounting for Derivative Financial Instruments We record all derivatives on our consolidated balance sheets at fair value. At the inception of a derivative contract, we determine whether the instrument will be part of a qualifying hedge accounting relationship or whether we will account for the contract as a trading instrument. We have elected not to apply hedge accounting to all new derivative contracts entered into after January 1, 2014. Changes in the fair value of our derivatives are recorded in gain (loss) on derivative instruments, net in our consolidated statements of operations. Net interest paid or received under our interest rate swaps is also recognized in gain (loss) on derivative instruments, net in our consolidated statements of operations. Before 2014, we applied hedge accounting to our interest rate swap agreements. Effective December 31, 2013, we voluntarily discontinued hedge accounting for our interest rate swap agreements by de-designating the interest rate swaps as cash flow hedges. As long as we expect the forecasted transactions that were being hedged (i.e., rollovers of our repurchase agreement borrowings) to still occur, the balance recorded in accumulated other comprehensive income (loss) (“AOCI”) from the interest rate swap activity through December 31, 2013 will remain in AOCI and be recognized in our consolidated statements of operations as interest expense over the remaining term of the interest rate swaps. Prior to December 31, 2020, we were a party to hybrid financial instruments that contained embedded derivative instruments and for which we did not elect the fair value option. We assessed at inception whether the economic characteristics of the embedded derivative instruments were clearly and closely related to the economic characteristics of the remaining component of the financial instrument (i.e., the debt host contract), whether the financial instrument was remeasured to fair value through earnings and whether a separate instrument with the same terms as the embedded instrument would meet the definition of a derivative instrument. When it was determined that (1) the embedded instrument possessed economic characteristics that were not clearly and closely related to the economic characteristics of the debt host contract, (2) the financial instrument was not remeasured to fair value through earnings and (3) a separate instrument with the same terms would qualify as a derivative instrument, the embedded instrument qualified as an embedded derivative that was separated from the debt host contract. The embedded derivative was recorded at fair value, and changes in fair value were recorded in realized and unrealized credit derivative income (loss), net in our consolidated statements of operations. We evaluate the terms and conditions of our holdings of swaptions, futures contracts, currency forward contracts and TBAs to determine if an instrument has the characteristics of an investment or should be considered a derivative under U.S. GAAP. Accordingly, futures contracts, currency forward contracts and TBAs having the characteristics of derivatives are accounted for at fair value with such changes recognized in gain (loss) on derivative instruments, net in the consolidated statements of operations. The fair value of these futures contracts, currency forward contracts and TBAs is included in derivative assets or derivative liabilities on the consolidated balance sheets.
Income Taxes	Income Taxes We elected to be taxed as a REIT commencing with our taxable year ended December 31, 2009. Accordingly, we will generally not be subject to U.S. federal and applicable state and local corporate income tax to the extent that we make qualifying distributions to our stockholders, and provided we satisfy on a continuing basis, through actual investment and operating results, the REIT requirements including certain asset, income, distribution and stock ownership tests. If we fail to qualify as a REIT and do not qualify for certain statutory relief provisions, we will be subject to U.S. federal, state and local income taxes and may be precluded from qualifying as a REIT for the four taxable years following the year in which we lost our REIT qualification. Accordingly, our failure to qualify as a REIT could have a material adverse impact on our results of operations and amounts available for distribution to stockholders. Our dividends paid deduction for qualifying dividends to our stockholders is computed using our REIT taxable income as opposed to net income reported on the consolidated financial statements. REIT taxable income will generally differ from net income because the determination of REIT taxable income is based on tax regulations and not financial accounting principles. We have elected to treat two of our subsidiaries as taxable REIT subsidiaries (“TRSs”). In general, TRSs may hold assets and engage in activities that we cannot hold or engage in directly and generally may engage in any real estate or non-real estate-related business. TRSs are subject to U.S. federal, state and local corporate income taxes. Our TRSs did not generate material taxable income for the years ended December 31, 2021, 2020 and 2019. We do not have any accruals for uncertain tax positions. We would recognize interest and penalties related to uncertain tax positions, if any, as income tax expense, which would be included in general and administrative expenses.
Accounting Pronouncements Recently Adopted	Accounting Pronouncements Recently Adopted In January 2021, the Financial Accounting Standards Board (“FASB”) expanded existing accounting guidance for evaluating the effects of reference rate reform on financial reporting. The new guidance expands the temporary optional expedients and exceptions to U.S. GAAP for contract modifications, hedge accounting and other relationships that reference London Interbank Overnight Financing Rate (“LIBOR”) to apply to all derivative instruments affected by the market-wide change in the interest rates used for discounting, margining or contract price alignment (commonly referred to as the discounting transition). The new guidance can be applied through December 31, 2022. In the fourth quarter of 2021, we transitioned our interest rate swaps that were indexed to LIBOR to interest rate swaps that are indexed to the Secured Overnight Financing Rate (“SOFR”) in a manner that allowed us to qualify for contract modification relief and maintain the same accounting for and presentation of interest rate swaps that was in place prior to modification. The modifications did not have a material effect on our financial statements.

Variable Interest Entities ("_2

Variable Interest Entities ("VIEs") (Tables)	12 Months Ended
	Dec. 31, 2021
Variable Interest Entity Disclosure [Abstract]
Schedule of Maximum Risk of Loss	Our maximum risk of loss in VIEs in which we are not the primary beneficiary at December 31, 2021 is presented in the table below. $ in thousands Carrying Company's Maximum Risk of Loss Non-Agency CMBS 62,909 62,909 Non-Agency RMBS 9,070 9,070 Investments in unconsolidated ventures 12,476 12,476 Total 84,455 84,455

Mortgage-Backed and Credit Ri_2

Mortgage-Backed and Credit Risk Transfer Securities (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Investment Portfolio	The following tables summarize our MBS portfolio by asset type at December 31, 2021 and 2020. December 31, 2021 $ in thousands Principal/ Notional Unamortized Amortized Unrealized Fair Period- (1) Agency RMBS: 30 year fixed-rate 7,514,229 246,183 7,760,412 (58,889) 7,701,523 2.07 % Total Agency RMBS pass-through 7,514,229 246,183 7,760,412 (58,889) 7,701,523 2.07 % Agency-CMO (2) 235,216 (203,180) 32,036 (1,279) 30,757 6.47 % Non-Agency CMBS 61,427 (3,096) 58,331 4,578 62,909 8.63 % Non-Agency RMBS (3)(4)(5) 392,543 (383,591) 8,952 118 9,070 5.26 % Total 8,203,415 (343,684) 7,859,731 (55,472) 7,804,259 2.14 % (1) Period-end weighted average yield is based on amortized cost as of December 31, 2021 and incorporates future prepayment and loss assumptions. (2) All Agency collateralized mortgage obligation (“Agency-CMO”) are interest-only securities (“Agency IO”). (3) Non-Agency RMBS is 35.6% variable rate, 63.5% fixed rate and 0.9% floating rate based on fair value. Coupon payments on variable rate investments are based upon changes in the underlying Hybrid adjustable-rate mortgage (“ARM”) loan coupons, while coupon payments on floating rate investments are based upon a spread to a reference index. (4) Of the total discount in non-Agency RMBS, $2.1 million is non-accretable calculated using the principal/notional balance and based on estimated future cash flows of the securities. (5) Non-Agency RMBS includes interest-only securities (“non-Agency IO”) which represent 97.7% of principal/notional balance, 44.8% of amortized cost and 19.9% of fair value. December 31, 2020 $ in thousands Principal/ Notional Unamortized Amortized Allowance for Credit Losses Unrealized Fair Value Period- end Weighted Average Yield (1) Agency RMBS: 30 year fixed-rate 7,635,107 391,644 8,026,751 — 24,115 8,050,866 1.86 % Total Agency RMBS pass-through 7,635,107 391,644 8,026,751 — 24,115 8,050,866 1.86 % Agency-CMO (2) 19,634 (19,634) — — — — — % Non-Agency CMBS 112,549 (5,791) 106,758 (1,768) 4,593 109,583 9.40 % Non-Agency RMBS (3)(4)(5) 790,627 (779,660) 10,967 — 766 11,733 7.83 % Total 8,557,917 (413,441) 8,144,476 (1,768) 29,474 8,172,182 1.97 % (1) Period-end weighted average yield is based on amortized cost as of December 31, 2020 and incorporates future prepayment and loss assumptions. (2) All Agency-CMO are interest-only securities Agency IO. (3) Non-Agency RMBS is 31.8% variable rate, 67.3% fixed rate and 0.9% floating rate based on fair value. Coupon payments on variable rate investments are based upon changes in the underlying Hybrid ARM loan coupons, while coupon payments on floating rate investments are based upon a spread to a reference index. (4) Of the total discount in non-Agency RMBS, $2.1 million is non-accretable calculated using the principal/notional balance and based on estimated future cash flows of the securities. (5) Non-Agency RMBS includes non-Agency IO which represent 98.8% of principal/notional balance, 49.3% of amortized cost and 41.5% of fair value. The components of the carrying value of our MBS portfolio at December 31, 2021 and 2020 are presented below. December 31, 2021 December 31, 2020 $ in thousands MBS Interest-Only Securities Total MBS Interest-Only Securities Total Principal/notional balance 7,584,812 618,603 8,203,415 7,757,491 800,426 8,557,917 Unamortized premium 250,771 — 250,771 391,644 — 391,644 Unamortized discount (11,902) (582,553) (594,455) (10,067) (795,018) (805,085) Allowance for credit losses — — — (1,768) — (1,768) Gross unrealized gains (1) 8,754 109 8,863 34,539 103 34,642 Gross unrealized losses (1) (60,741) (3,594) (64,335) (4,527) (641) (5,168) Fair value 7,771,694 32,565 7,804,259 8,167,312 4,870 8,172,182 (1) Gross unrealized gains and losses includes gains (losses) recognized in net income for securities accounted for under the fair value option as well as gains (losses) for available-for-sale securities which are recognized as adjustments to other comprehensive income. Realization occurs upon sale or settlement of such securities. Further detail on the components of our total gains (losses) on investments, net for the years ended December 31, 2021 and 2020 is provided below within this Note 4.
Schedule of Fair Value of Available-for-sale Securities and Securities Accounted for under Fair Value Option by Asset Type	The following table presents the fair value of our available-for-sale securities and securities accounted for under the fair value option by asset type as of December 31, 2021 and December 31, 2020. We have elected the fair value option for all of our RMBS interest-only securities and our MBS purchased on or after September 1, 2016. As of December 31, 2021 and December 31, 2020, approximately 99% of our MBS are accounted for under the fair value option. December 31, 2021 December 31, 2020 $ in thousands Available-for-sale Securities Securities under Fair Value Option Total Available-for-sale Securities Securities under Fair Value Option Total Agency RMBS: 30 year fixed-rate — 7,701,523 7,701,523 — 8,050,866 8,050,866 Total Agency RMBS pass-through — 7,701,523 7,701,523 — 8,050,866 8,050,866 Agency-CMO — 30,757 30,757 — — — Non-Agency CMBS 62,909 — 62,909 109,583 — 109,583 Non-Agency RMBS 7,288 1,782 9,070 7,267 4,466 11,733 Total 70,197 7,734,062 7,804,259 116,850 8,055,332 8,172,182
Schedule of Fair Value of MBS and GSE CRTs According to Weighted Average Life Classification	The following table summarizes our MBS portfolio according to estimated weighted average life classifications as of December 31, 2021 and 2020. $ in thousands December 31, 2021 December 31, 2020 Less than one year 23,150 22,112 Greater than one year and less than five years 891,510 5,303,917 Greater than or equal to five years 6,889,599 2,846,153 Total 7,804,259 8,172,182
Schedule of Unrealized Losses and Estimated Fair Value of MBS and GSE CRTs by Length of Time	The following tables present the estimated fair value and gross unrealized losses of our MBS by length of time that such securities have been in a continuous unrealized loss position at December 31, 2021 and 2020. December 31, 2021 Less than 12 Months 12 Months or More Total $ in thousands Fair Unrealized Number of Securities Fair Unrealized Number of Securities Fair Unrealized Number of Securities Agency RMBS: 30 year fixed-rate 6,838,999 (60,741) 54 — — — 6,838,999 (60,741) 54 Total Agency RMBS pass-through (1) 6,838,999 (60,741) 54 — — — 6,838,999 (60,741) 54 Agency-CMO (1) 21,810 (1,389) 5 — — — 21,810 (1,389) 5 Non-Agency RMBS (2) 767 (1,132) 5 1,042 (1,073) 9 1,809 (2,205) 14 Total 6,861,576 (63,262) 64 1,042 (1,073) 9 6,862,618 (64,335) 73 (1) Fair value option has been elected for all Agency securities in an unrealized loss position. (2) Includes non-Agency IO with fair value of $1.7 million for which the fair value option has been elected. Such securities have unrealized losses of $2.1 million. The remaining $136,000 of unrealized losses on non-Agency RMBS are included in accumulated other comprehensive income. These losses are not reflected in an allowance for credit losses based on a comparison of discounted expected cash flows to current amortized cost basis. December 31, 2020 Less than 12 Months 12 Months or More Total $ in thousands Fair Unrealized Number of Securities Fair Unrealized Number of Securities Fair Unrealized Number of Securities Agency RMBS: 30 year fixed-rate 1,496,279 (4,108) 20 — — — 1,496,279 (4,108) 20 Total Agency RMBS pass-through (1) 1,496,279 (4,108) 20 — — — 1,496,279 (4,108) 20 Non-Agency CMBS (2) 27,069 (419) 1 — — — 27,069 (419) 1 Non-Agency RMBS (3) 2,681 (438) 6 1,612 (203) 7 4,293 (641) 13 Total 1,526,029 (4,965) 27 1,612 (203) 7 1,527,641 (5,168) 34 (1) Fair value option has been elected for all Agency RMBS in an unrealized loss position. (2) Unrealized losses on non-Agency CMBS are included in accumulated other comprehensive income. These losses are not reflected in an allowance for credit losses based on a comparison of discounted expected cash flows to current amortized cost basis.
Schedule of Debt Securities, Available-for-sale, Allowance for Credit Loss	The following table presents a roll-forward of our allowance for credit losses. $ in thousands Years Ended December 31, 2021 2020 Beginning allowance for credit losses (1,768) — Additions to the allowance for credit losses on securities for which credit losses were not previously recorded — (1,768) Additional increases or decreases in the allowance for credit losses on securities that had an allowance recorded in a previous period 1,768 — Ending allowance for credit losses — (1,768)
Schedule of Changes in Other than Temporary Impairment Included in Earnings	The following table represents OTTI included in earnings for the year ended December 31, 2019. Year Ended December 31, $ in thousands 2019 RMBS interest-only securities 6,707 Non-Agency RMBS (1) 1,024 Total 7,731 (1) Amounts disclosed relate to credit losses on debt securities for which a portion of an other-than-temporary impairment was recognized in other comprehensive income.
Schedule of Gain (Loss) on Investments	The following table summarizes the components of our total gain (loss) on investments, net for the years ended December 31, 2021, 2020 and 2019. Years Ended December 31, $ in thousands 2021 2020 2019 Gross realized gains on sale of investments 3,297 656,915 24,721 Gross realized losses on sale of investments (284,521) (1,020,696) (16,682) Impairment of investments the Company intends to sell or more likely than not will be required to sell before recovery of amortized cost basis and other impairments — (101,138) — Other-than-temporary impairment losses — — (7,731) Net unrealized gains (losses) on MBS and GSE CRT accounted for under the fair value option (85,702) (492,047) 624,158 Net unrealized gains (losses) on commercial loan 417 (1,164) — Realized loss on loan participation interest — (3,808) — Total gain (loss) on investments, net (366,509) (961,938) 624,466
Schedule of Components of MBS and GSE CRT Interest Income	The following tables present components of interest income recognized on our MBS and GSE CRT portfolio for the years ended December 31, 2021, 2020 and 2019. GSE CRT interest income excludes coupon interest associated with embedded derivatives not accounted for under the fair value option of $6.3 million and $20.8 million for the years ended December 31, 2020 and 2019, respectively, that was recorded as realized and unrealized credit derivative income (loss), net. For the Year ended December 31, 2021 $ in thousands Coupon Net (Premium Interest Agency RMBS 201,694 (41,881) 159,813 Non-Agency CMBS 3,841 2,695 6,536 Non-Agency RMBS 1,950 (1,264) 686 Other 21 — 21 Total 207,506 (40,450) 167,056 For the Year ended December 31, 2020 $ in thousands Coupon Net (Premium Amortization)/Discount Accretion Interest Agency RMBS 161,845 (32,737) 129,108 Agency CMBS 35,822 (1,744) 34,078 Non-Agency CMBS 76,068 14,721 90,789 Non-Agency RMBS 13,895 1,107 15,002 GSE CRT 10,232 (2,560) 7,672 Other 751 — 751 Total 298,613 (21,213) 277,400 For the Year ended December 31, 2019 $ in thousands Coupon Net (Premium Amortization)/Discount Accretion Interest Agency RMBS 488,650 (76,676) 411,974 Agency CMBS 88,462 (4,712) 83,750 Non-Agency CMBS 163,326 15,347 178,673 Non-Agency RMBS 52,857 13,164 66,021 GSE CRT 37,032 (7,842) 29,190 Other 3,049 — 3,049 Total 833,376 (60,719) 772,657

Other Assets (Tables)

Other Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Other Assets	The following table summarizes our other assets as of December 31, 2021 and 2020: $ in thousands December 31, 2021 December 31, 2020 Commercial loan, held-for-investment 23,515 23,098 Investments in unconsolidated ventures 12,476 16,408 Prepaid expenses and other assets 1,518 1,657 Total 37,509 41,163

Borrowings (Tables)

Borrowings (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Borrowings	The following tables summarize certain characteristics of our borrowings at December 31, 2021 and 2020. Refer to Note 7 - “Collateral Positions” for collateral pledged and held under our repurchase agreements and secured loans. December 31, 2021 $ in thousands Amount Weighted Weighted Repurchase Agreements - Agency RMBS 6,987,834 0.14 % 29 Total Borrowings 6,987,834 0.14 % 29 December 31, 2020 $ in thousands Amount Weighted Weighted Repurchase Agreements - Agency RMBS 7,228,699 0.21 % 14 Total Borrowings 7,228,699 0.21 % 14

Collateral Positions (Tables)

Collateral Positions (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Fair Value of Collateral Hold and Pledged	The following table summarizes the fair value of collateral that we pledged and held under our repurchase agreements, interest rate swaps, currency forward contracts, and TBAs as of December 31, 2021 and 2020. Refer to Note 2 - “Summary of Significant Accounting Policies - Fair Value Measurements” for a description of how we determine fair value. MBS collateral pledged is included in mortgage-backed securities on our consolidated balance sheets. Cash collateral pledged on centrally cleared interest rate swaps and currency forward contracts is classified as restricted cash on our consolidated balance sheets. Cash collateral pledged on repurchase agreements and TBAs accounted for as derivatives is classified as due from counterparties on our consolidated balance sheets. Cash collateral held that is not restricted for use is included in cash and cash equivalents on our consolidated balance sheets and the liability to return the collateral is included in collateral held payable. Non-cash collateral held is only recognized if the counterparty defaults or if we sell the pledged collateral. As of December 31, 2021 and 2020, we did not recognize any non-cash collateral held on our consolidated balance sheets. $ in thousands As of Collateral Pledged December 31, 2021 December 31, 2020 Repurchase Agreements: Agency RMBS 7,326,175 7,614,935 Cash 3,527 700 Total repurchase agreements collateral pledged 7,329,702 7,615,635 Derivative instruments: Cash 4,458 378 Restricted cash 219,918 244,573 Total derivative instruments collateral pledged 224,376 244,951 Total collateral pledged: Agency RMBS 7,326,175 7,614,935 Cash 7,985 1,078 Restricted cash 219,918 244,573 Total collateral pledged 7,554,078 7,860,586 Collateral Held December 31, 2021 December 31, 2020 Repurchase Agreements: Cash — 1,916 Non-cash collateral 248 4,226 Total repurchase agreements collateral held 248 6,142 Derivative instruments: Cash 280 1,630 Total derivative instruments collateral held 280 1,630 Total collateral held: Cash 280 3,546 Non-cash collateral 248 4,226 Total collateral held 528 7,772

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	The following table summarizes changes in the notional amount of our derivative instruments during 2021: $ in thousands Notional Amount as of December 31, 2020 Additions (1) Settlement, Termination, Expiration or Exercise (1) Notional Amount as Interest Rate Swaps (2)(3) 6,300,000 4,250,000 (2,500,000) 8,050,000 Interest Rate Swaptions — 1,000,000 (1,000,000) — Currency Forward Contracts 33,084 65,279 (84,767) 13,596 TBA Purchase Contracts 1,700,000 23,125,000 (23,225,000) 1,600,000 TBA Sale Contracts — (23,225,000) 23,225,000 — Total 8,033,084 5,215,279 (3,584,767) 9,663,596 (1) Excludes $7.3 billion of additions and terminations related to the transition of our interest rate swaps that were indexed to LIBOR to interest rate swaps that are indexed to SOFR. These transactions were accounted for under the FASB's reference rate reform relief. Refer to Note 2 - “Summary of Significant Accounting Policies” for additional information. (2) Notional amount as of December 31, 2021 excludes $1.3 billion of interest rate swaps with forward start dates. (3) Notional amount as of December 31, 2021 includes $6.3 billion of interest rate swaps whereby we pay interest at a fixed rate and receive interest at a floating rate and $1.8 billion of interest rate swaps whereby we pay interest at a floating rate and receive interest at a fixed rate.
Schedule of Interest Rate Swaps Outstanding	As of December 31, 2021 and 2020, we had interest rate swaps whereby we pay interest at a fixed rate and receive interest at a floating rate, excluding interest rate swaps with forward start dates, with maturities as shown in the table below. Floating rate interest on swaps held as of December 31, 2021 was based on SOFR and floating rate interest on swaps held as of December 31, 2020 was based on 1-month LIBOR. $ in thousands As of December 31, 2021 Maturities Notional Amount Weighted Average Fixed Pay Rate Weighted Average Floating Receive Rate Weighted Average Years to Maturity Less than 3 years 1,000,000 0.06 % 0.05 % 2.6 3 to 5 years 1,250,000 0.12 % 0.05 % 3.6 5 to 7 years 2,225,000 0.32 % 0.05 % 5.9 7 to 10 years 1,825,000 0.52 % 0.05 % 8.6 Total 6,300,000 0.30 % 0.05 % 5.7 $ in thousands As of December 31, 2020 Maturities Notional Amount Weighted Average Fixed Pay Rate Weighted Average Floating Receive Rate Weighted Average Years to Maturity 3 to 5 years 2,250,000 0.20 % 0.15 % 4.2 5 to 7 years 1,775,000 0.43 % 0.15 % 6.7 7 to 10 years 2,275,000 0.60 % 0.15 % 9.2 Total 6,300,000 0.41 % 0.15 % 6.7 As of December 31, 2021, we held $1.3 billion notional amount of interest rate swaps with forward start dates that will receive floating interest based on SOFR with a weighted average maturity of 20.8 years and a weighted average fixed pay rate of 0.99%. We did not hold any interest rate swaps with forward start dates as of December 31, 2020. As of December 31, 2021, we had interest rate swaps whereby we pay floating interest based on SOFR and receive interest at a fixed rate with maturities as shown in the table below. We did not hold any interest rate swaps that paid floating interest as of December 31, 2020. $ in thousands As of December 31, 2021 Maturities Notional Amounts Weighted Average Floating Pay Rate Weighted Average Fixed Receive Rate Weighted Average Years to Maturity Less than 3 years 1,000,000 0.05 % 0.77 % 2.6 5 to 7 years 500,000 0.05 % 1.26 % 6.9 7 to 10 years 250,000 0.05 % 1.27 % 10.0 Total 1,750,000 0.05 % 0.98 % 4.9
Schedule of TBA Contracts	The following table summarizes certain characteristics of our TBAs accounted for as derivatives as of December 31, 2021 and 2020. $ in thousands As of December 31, 2021 Notional Amount Implied Cost Basis Implied Market Value Net Carrying Value TBA purchase contracts 1,600,000 1,636,906 1,633,955 (2,951) $ in thousands As of December 31, 2020 Notional Amount Implied Cost Basis Implied Market Value Net Carrying Value TBA purchase contracts 1,700,000 1,772,211 1,782,104 9,893
Schedule of Fair Value of Derivative Financial Instruments and Classification on Balance Sheet	The table below presents the fair value of our derivative financial instruments, as well as their classification on our consolidated balance sheets as of December 31, 2021 and 2020. $ in thousands Derivative Assets Derivative Liabilities As of December 31, 2021 As of December 31, 2020 As of December 31, 2021 As of December 31, 2020 Balance Fair Value Fair Value Balance Fair Value Fair Value Interest Rate Swaps Asset — — Interest Rate Swaps Liability 11,405 5,537 Currency Forward Contracts 270 111 Currency Forward Contracts — 807 TBAs — 9,893 TBAs 2,951 — Total Derivative Assets 270 10,004 Total Derivative Liabilities 14,356 6,344
Schedule of Effect of Derivative Financial Instruments on Statement of Operations	The tables below present the effect of our credit derivatives on our consolidated statements of operations for the years ended December 31, 2020 and 2019. $ in thousands Year ended December 31, 2020 Derivative Realized gain (loss), net GSE CRT embedded derivative coupon interest Unrealized Realized and unrealized credit derivative income (loss), net GSE CRT Embedded Derivatives (31,354) 6,323 (10,281) (35,312) $ in thousands Year Ended December 31, 2019 Derivative Realized gain (loss), net GSE CRT embedded derivative coupon interest Unrealized Realized and unrealized credit derivative income (loss), net GSE CRT Embedded Derivatives — 20,833 (12,490) 8,343 The following tables summarize the effect of interest rate swaps, swaptions, futures contracts, currency forward contracts and TBAs reported in gain (loss) on derivative instruments, net on the consolidated statements of operations for the years ended December 31, 2021, 2020 and 2019. $ in thousands Year ended December 31, 2021 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps 185,232 (15,803) (5,869) 163,560 Interest Rate Swaptions (553) — — (553) Currency Forward Contracts 209 — 970 1,179 TBAs (28,731) — (12,844) (41,575) Total 156,157 (15,803) (17,743) 122,611 $ in thousands Year ended December 31, 2020 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps (857,753) 8,047 (24,068) (873,774) Currency Forward Contracts (1,301) — (345) (1,646) TBAs 14,477 — 9,893 24,370 Total (844,577) 8,047 (14,520) (851,050) $ in thousands Year ended December 31, 2019 Derivative Realized gain (loss) on derivative instruments, net Contractual net Unrealized Gain (loss) on derivative instruments, net Interest Rate Swaps (440,626) 35,840 18,826 (385,960) Futures Contracts (157,929) — 7,836 (150,093) Currency Forward Contracts 1,478 — (180) 1,298 Total (597,077) 35,840 26,482 (534,755)

Offsetting Assets and Liabili_2

Offsetting Assets and Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Offsetting [Abstract]
Schedule of Offsetting Assets	The following tables present information about the assets and liabilities that are subject to master netting arrangements (or similar agreements) and can potentially be offset on our consolidated balance sheets at December 31, 2021 and December 31, 2020. The daily variation margin payment for centrally cleared interest rate swaps is characterized as settlement of the derivative itself rather than collateral. Our derivative liability of $11.4 million at December 31, 2021 (December 31, 2020: liability of $5.5 million) related to centrally cleared interest rate swaps is not included in the table below as a result of this characterization of daily variation margin. As of December 31, 2021 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 270 — 270 — (270) — Total Assets 270 — 270 — (270) — Liabilities Derivatives (1) (2) (2,951) — (2,951) — 2,951 — Repurchase Agreements (3) (6,987,834) — (6,987,834) 6,987,834 — — Total Liabilities (6,990,785) — (6,990,785) 6,987,834 2,951 — As of December 31, 2020 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 10,004 — 10,004 (111) (1,630) 8,263 Total Assets 10,004 — 10,004 (111) (1,630) 8,263 Liabilities Derivatives (1) (2) (807) — (807) 111 610 (86) Repurchase Agreements (3) (7,228,699) — (7,228,699) 7,228,699 — — Total Liabilities (7,229,506) — (7,229,506) 7,228,810 610 (86) (1) Amounts represent derivative assets and derivative liabilities which could potentially be offset against other derivative assets, derivative liabilities and cash collateral pledged or received. (2) Cash collateral pledged by us on our currency forward contracts, TBAs and centrally cleared interest rate swaps was $224.4 million and $245.0 million at December 31, 2021 and December 31, 2020, respectively. Cash collateral pledged on our centrally cleared interest rate swaps is settled against the fair value of these swaps and is therefore excluded from the tables above. We held cash collateral on our derivatives of $280,000 and $1.6 million as of December 31, 2021 and December 31, 2020, respectively.
Schedule of Offsetting Liabilities	The following tables present information about the assets and liabilities that are subject to master netting arrangements (or similar agreements) and can potentially be offset on our consolidated balance sheets at December 31, 2021 and December 31, 2020. The daily variation margin payment for centrally cleared interest rate swaps is characterized as settlement of the derivative itself rather than collateral. Our derivative liability of $11.4 million at December 31, 2021 (December 31, 2020: liability of $5.5 million) related to centrally cleared interest rate swaps is not included in the table below as a result of this characterization of daily variation margin. As of December 31, 2021 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 270 — 270 — (270) — Total Assets 270 — 270 — (270) — Liabilities Derivatives (1) (2) (2,951) — (2,951) — 2,951 — Repurchase Agreements (3) (6,987,834) — (6,987,834) 6,987,834 — — Total Liabilities (6,990,785) — (6,990,785) 6,987,834 2,951 — As of December 31, 2020 Gross Amounts Not Offset in the $ in thousands Gross Gross Net Amounts Financial Cash Collateral Net Amount Assets Derivatives (1) (2) 10,004 — 10,004 (111) (1,630) 8,263 Total Assets 10,004 — 10,004 (111) (1,630) 8,263 Liabilities Derivatives (1) (2) (807) — (807) 111 610 (86) Repurchase Agreements (3) (7,228,699) — (7,228,699) 7,228,699 — — Total Liabilities (7,229,506) — (7,229,506) 7,228,810 610 (86) (1) Amounts represent derivative assets and derivative liabilities which could potentially be offset against other derivative assets, derivative liabilities and cash collateral pledged or received. (2) Cash collateral pledged by us on our currency forward contracts, TBAs and centrally cleared interest rate swaps was $224.4 million and $245.0 million at December 31, 2021 and December 31, 2020, respectively. Cash collateral pledged on our centrally cleared interest rate swaps is settled against the fair value of these swaps and is therefore excluded from the tables above. We held cash collateral on our derivatives of $280,000 and $1.6 million as of December 31, 2021 and December 31, 2020, respectively.

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Schedule of Fair Values Measured on Recurring Basis	The following tables present our assets and liabilities measured at fair value on a recurring basis. December 31, 2021 Fair Value Measurements Using: $ in thousands Level 1 Level 2 Level 3 NAV as a practical expedient (2) Total at Assets: Mortgage-backed securities (1) — 7,804,259 — — 7,804,259 Derivative assets — 270 — — 270 Other assets (3) — — 23,515 12,476 35,991 Total assets — 7,804,529 23,515 12,476 7,840,520 Liabilities: Derivative liabilities — 14,356 — — 14,356 Total liabilities — 14,356 — — 14,356 December 31, 2020 Fair Value Measurements Using: $ in thousands Level 1 Level 2 Level 3 NAV as a practical expedient (2) Total at Assets: Mortgage-backed securities (1) — 8,172,182 — — 8,172,182 Derivative assets — 10,004 — — 10,004 Other assets (3) — — 23,098 16,408 39,506 Total assets — 8,182,186 23,098 16,408 8,221,692 Liabilities: Derivative liabilities — 6,344 — — 6,344 Total liabilities — 6,344 — — 6,344 (1) For more detail about the fair value of our MBS, refer to Note 4 - “Mortgage-Backed and Credit Risk Transfer Securities.” (2) Investments in unconsolidated ventures are valued using the net asset value (“NAV”) as a practical expedient and are not subject to redemption, although investors may sell or transfer their interest at the approval of the general partner of the underlying funds. As of December 31, 2021, both of the unconsolidated ventures are in liquidation and plan to sell or settle their remaining investments as expeditiously as possible. (3) Includes $23.5 million and $23.1 million of a commercial loan investment as of December 31, 2021 and 2020, respectively. We elected the fair value option for our commercial loan investment as of January 1, 2020 and valued the loan based on a third party appraisal as of December 31, 2021 and 2020.
Schedule of Net Derivative Asset (Liability) Level 3 Roll Forward	The following table shows a reconciliation of the beginning and ending fair value measurements of our GSE CRT embedded derivatives which we valued utilizing Level 3 inputs: Year Ended $ in thousands December 31, 2020 Beginning balance 10,281 Sales and settlements 31,354 Total net credit derivative gains (losses) included in net income: Realized credit derivative gains (losses), net (31,354) Unrealized credit derivative gains (losses), net (10,281) Ending balance —
Schedule of Loan Participation Interest Level 3 Roll Forward	The following table shows a reconciliation of the beginning and ending fair value measurements of our loan participation interest which we valued utilizing Level 3 inputs: Year Ended $ in thousands December 31, 2020 Beginning balance 44,654 Purchases/Advances — Repayments (19,269) Sales (21,577) Total net gains (losses) included in net income: Realized losses (3,808) Ending balance — Realized losses on our loan participation interest were included in gain (loss) on investments, net in our consolidated statements of operations. The following table shows a reconciliation of the beginning and ending balance of our commercial loan investment which we have valued utilizing Level 3 inputs: Years Ended $ in thousands December 31, 2021 December 31, 2020 Beginning balance 23,098 24,055 Cumulative effect of adoption of new accounting principle — 342 Repayments — (136) Total net unrealized gains (losses) included in net income: Unrealized gain (loss) 417 (1,163) Ending balance 23,515 23,098
Schedule of Fair Value Measurement of Commercial Loan	The following table summarizes the significant unobservable input used in the fair value measurement of our commercial loan investment: Fair Value at Valuation Unobservable $ in thousands December 31, 2021 Technique Input Rate Commercial Loan 23,515 Discounted Cash Flow Discount rate 18.8 % Fair Value at Valuation Unobservable $ in thousands December 31, 2020 Technique Input Rate Commercial Loan 23,098 Discounted Cash Flow Discount rate 29.9 %
Schedule of Carrying Values and Estimated Fair Value of Financial Instruments	The following table presents the carrying value and estimated fair value of our financial instruments that are not carried at fair value on the consolidated balance sheets at December 31, 2021 and December 31, 2020: December 31, 2021 December 31, 2020 $ in thousands Carrying Estimated Carrying Estimated Financial Liabilities: Repurchase agreements 6,987,834 6,987,806 7,228,699 7,228,719 Total 6,987,834 6,987,806 7,228,699 7,228,719

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following table summarizes the costs incurred on our behalf by our Manager for the years ended December 31, 2021, 2020 and 2019. Years ended December 31, $ in thousands 2021 2020 2019 Incurred costs, prepaid or expensed 7,108 10,845 7,343 Incurred costs, charged against equity as a cost of raising capital 692 239 950 Total incurred costs, originally paid by our Manager 7,800 11,084 8,293

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income	The following tables present the components of total other comprehensive income (loss), net and accumulated other comprehensive income (“AOCI”) at December 31, 2021 and December 31, 2020, respectively. The tables exclude gains and losses on MBS and GSE CRTs that are accounted for under the fair value option. December 31, 2021 $ in thousands Equity method investments Available-for-sale securities Derivatives and hedging Total Total other comprehensive income (loss) Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net — 756 — 756 Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense — — (22,000) (22,000) Currency translation adjustments on investment in unconsolidated venture (75) — — (75) Total other comprehensive income (loss) (75) 756 (22,000) (21,319) AOCI balance at beginning of period 499 5,993 52,113 58,605 Total other comprehensive income (loss) (75) 756 (22,000) (21,319) AOCI balance at end of period 424 6,749 30,113 37,286 December 31, 2020 $ in thousands Equity method investments Available-for-sale securities Derivatives and hedging Total Total other comprehensive income (loss) Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net — (223,416) — (223,416) Reclassification of unrealized (gain) loss on sale of mortgage-backed and credit risk transfer securities to gain (loss) on investments, net — 13,940 — 13,940 Reclassification of unrealized loss on available-for-sale securities to (increase) decrease in provision for credit losses — 1,768 — 1,768 Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense — — (23,794) (23,794) Currency translation adjustments on investment in unconsolidated venture 1,144 — — 1,144 Total other comprehensive income (loss) 1,144 (207,708) (23,794) (230,358) AOCI balance at beginning of period (645) 213,701 75,907 288,963 Total other comprehensive income (loss) 1,144 (207,708) (23,794) (230,358) AOCI balance at end of period 499 5,993 52,113 58,605
Schedule of Dividends Declared	We declared the following dividends during 2021 and 2020: $ in thousands, except per share amounts Dividends Declared Series A Preferred Stock Per Share In Aggregate Date of Payment 2021 (1) February 19, 2021 0.4844 2,713 April 26, 2021 2020 November 5, 2020 0.4844 2,713 January 25, 2021 September 10, 2020 0.4844 2,713 October 26, 2020 June 17, 2020 0.4844 2,712 July 27, 2020 March 17, 2020 0.4844 2,713 May 22, 2020 (1) On June 16, 2021, we paid a final dividend of $0.2691 per share ($1.5 million in aggregate) in connection with the redemption of our Series A Preferred Stock. The final dividend was treated as a component of the redemption price for tax purposes. $ in thousands, except per share amounts Dividends Declared Series B Preferred Stock Per Share In Aggregate Date of Payment 2021 November 2, 2021 0.4844 3,003 December 27, 2021 August 3, 2021 0.4844 3,003 September 27, 2021 May 4, 2021 0.4844 3,004 June 28, 2021 February 19, 2021 0.4844 3,003 March 29, 2021 2020 November 5, 2020 0.4844 3,003 December 28, 2020 August 5, 2020 0.4844 3,003 September 28, 2020 May 9, 2020 0.4844 3,004 June 29, 2020 February 18, 2020 0.4844 3,003 May 22, 2020 $ in thousands, except per share amounts Dividends Declared Series C Preferred Stock Per Share In Aggregate Date of Payment 2021 November 2, 2021 0.46875 5,391 December 27, 2021 August 3, 2021 0.46875 5,391 September 27, 2021 May 4, 2021 0.46875 5,390 June 28, 2021 February 19, 2021 0.46875 5,391 March 29, 2021 2020 November 5, 2020 0.46875 5,391 December 28, 2020 August 5, 2020 0.46875 5,391 September 28, 2020 May 9, 2020 0.46875 5,390 June 29, 2020 February 18, 2020 0.46875 5,391 May 22, 2020 $ in thousands, except per share amounts Dividends Declared Common Stock Per Share In Aggregate Date of Payment 2021 December 27, 2021 0.09 29,689 January 27, 2022 September 28, 2021 0.09 28,057 October 26, 2021 June 23, 2021 0.09 26,071 July 27, 2021 March 26, 2021 0.09 22,176 April 27, 2021 2020 December 28, 2020 0.08 16,258 January 26, 2021 September 30, 2020 0.05 9,070 October 27, 2020 June 17, 2020 0.02 3,626 July 28, 2020 March 17, 2020 0.50 82,483 June 30, 2020 The following table sets forth the dividends declared per share of our preferred and common stock and their related tax characterization for the fiscal tax years ended December 31, 2021 and 2020. Tax Characterization of Dividends Fiscal Tax Year Dividends Declared in Prior Year and Taxable in Current Year Dividends Declared and Taxable in Current Year Ordinary Dividends Return of Capital Capital Gain Distribution Series A Preferred Stock Dividends Fiscal tax year 2021 0.484400 0.484400 0.968800 — — Fiscal tax year 2020 (1) 0.484400 1.453200 — 1.937600 — Series B Preferred Stock Dividends Fiscal tax year 2021 — 1.936700 1.936700 — — Fiscal tax year 2020 — 1.937600 — 1.937600 — Series C Preferred Stock Dividends Fiscal tax year 2021 — 1.875000 0.590720 1.284280 — Fiscal tax year 2020 — 1.875000 — 1.875000 — Common Stock Dividends Fiscal tax year 2021 (2) 0.080000 0.270000 — 0.350000 — Fiscal tax year 2020 (3) 0.500000 0.570000 — 1.070000 — (1) Excludes preferred stock dividend of $0.4844 per share declared on November 5, 2020 that had a record date of January 1, 2021. This dividend is a 2021 dividend for federal income tax purposes. (2) Excludes common stock dividend of $0.09 per share declared on December 27, 2021 that had a record date of January 11, 2022. This dividend is a 2022 dividend for federal income tax purposes. (3) Excludes common stock dividend of $0.08 per share declared on December 28, 2020 that had a record date of January 12, 2021. This dividend is a 2021 dividend for federal income tax purposes.

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Earnings per share for the years ended December 31, 2021, 2020 and 2019 is computed as follows: In thousands except per share amounts Years Ended December 31, 2021 2020 2019 Numerator (Income) Basic Earnings: Net income (loss) available to common stockholders (132,477) (1,718,778) 319,675 Denominator (Weighted Average Shares) Basic Earnings: Shares available to common stockholders 275,132 173,730 132,306 Effect of dilutive securities: Restricted stock awards — — 12 Dilutive Shares 275,132 173,730 132,318 Earnings (loss) per share: Net income (loss) attributable to common stockholders Basic (0.48) (9.89) 2.42 Diluted (0.48) (9.89) 2.42

Organization and Business Ope_2

Organization and Business Operations (Detail)	12 Months Ended
	Dec. 31, 2021segment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of operating segments	1
Minimum distribution percentage of taxable income to qualify for REIT	90.00%

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Detail)	12 Months Ended
	Dec. 31, 2021USD ($)subsidiary	Dec. 31, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Securities under Fair Value Option	$ 7,734,062,000	$ 8,055,332,000
Percentage of MBS and GSE CRT accounted for under the fair value option	99.00%	99.00%
Available-for-sale securities	$ 70,197,000	$ 116,850,000
FDIC deposit insurance limit amount	$ 250,000
Number of subsidiaries treated as taxable REIT | subsidiary	2
7.75% Fixed-to-Floating Series B Cumulative Redeemable Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred Stock, dividend rate stated percentage	7.75%
7.50% Fixed-to-Floating Series C Cumulative Redeemable Preferred Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Preferred Stock, dividend rate stated percentage	7.50%
MBS and GSE CRT Securities
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Securities under Fair Value Option	$ 7,700,000,000	8,100,000,000
Available-for-sale securities	$ 70,200,000	$ 116,900,000
Percentage of MBS and GSE CRT securities classified as available-for-sale	1.00%	1.00%
Investment related receivable	$ 16,800,000	$ 15,600,000

Variable Interest Entities ("_3

Variable Interest Entities ("VIEs") (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Variable Interest Entity
Carrying Amount	$ 7,804,259	$ 8,172,182
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity
Carrying Amount	84,455
Company's Maximum Risk of Loss	84,455
Variable Interest Entity, Not Primary Beneficiary | Non-Agency CMBS
Variable Interest Entity
Carrying Amount	62,909
Company's Maximum Risk of Loss	62,909
Variable Interest Entity, Not Primary Beneficiary | Non-Agency RMBS
Variable Interest Entity
Carrying Amount	9,070
Company's Maximum Risk of Loss	9,070
Variable Interest Entity, Not Primary Beneficiary | Investments in unconsolidated ventures
Variable Interest Entity
Carrying Amount	12,476
Company's Maximum Risk of Loss	$ 12,476

Mortgage-Backed and Credit Ri_3

Mortgage-Backed and Credit Risk Transfer Securities - Summary of Investment Portfolio (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 8,203,415,000	$ 8,557,917,000
Unamortized Premium (Discount)	(343,684,000)	(413,441,000)
Amortized Cost	7,859,731,000	8,144,476,000
Allowance for Credit Losses	0	(1,768,000)	$ 0
Unrealized Gain/ (Loss), net	(55,472,000)	29,474,000
Fair Value	$ 7,804,259,000	$ 8,172,182,000
Period- end Weighted Average Yield	2.14%	1.97%
Unamortized premium (discount) non-accretable portion	$ 2,100,000	$ 2,100,000
Percentage of Non-Agency RMBS interest-only, principal balance	97.70%	98.80%
Percentage of Non-Agency RMBS interest-only, amortized cost	44.80%	49.30%
Percentage of Non-Agency RMBS interest only, fair value	19.90%	41.50%
30 year fixed-rate
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 7,514,229,000	$ 7,635,107,000
Unamortized Premium (Discount)	246,183,000	391,644,000
Amortized Cost	7,760,412,000	8,026,751,000
Allowance for Credit Losses		0
Unrealized Gain/ (Loss), net	(58,889,000)	24,115,000
Fair Value	$ 7,701,523,000	$ 8,050,866,000
Period- end Weighted Average Yield	2.07%	1.86%
Total Agency RMBS pass-through
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 7,514,229,000	$ 7,635,107,000
Unamortized Premium (Discount)	246,183,000	391,644,000
Amortized Cost	7,760,412,000	8,026,751,000
Allowance for Credit Losses		0
Unrealized Gain/ (Loss), net	(58,889,000)	24,115,000
Fair Value	$ 7,701,523,000	$ 8,050,866,000
Period- end Weighted Average Yield	2.07%	1.86%
Agency-CMO
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 235,216,000	$ 19,634,000
Unamortized Premium (Discount)	(203,180,000)	(19,634,000)
Amortized Cost	32,036,000	0
Allowance for Credit Losses		0
Unrealized Gain/ (Loss), net	(1,279,000)	0
Fair Value	$ 30,757,000	$ 0
Period- end Weighted Average Yield	6.47%	0.00%
Non-Agency CMBS
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 61,427,000	$ 112,549,000
Unamortized Premium (Discount)	(3,096,000)	(5,791,000)
Amortized Cost	58,331,000	106,758,000
Allowance for Credit Losses		(1,768,000)
Unrealized Gain/ (Loss), net	4,578,000	4,593,000
Fair Value	$ 62,909,000	$ 109,583,000
Period- end Weighted Average Yield	8.63%	9.40%
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Principal/ Notional Balance	$ 392,543,000	$ 790,627,000
Unamortized Premium (Discount)	(383,591,000)	(779,660,000)
Amortized Cost	8,952,000	10,967,000
Allowance for Credit Losses		0
Unrealized Gain/ (Loss), net	118,000	766,000
Fair Value	$ 9,070,000	$ 11,733,000
Period- end Weighted Average Yield	5.26%	7.83%
Percentage of non-agency securities classified as variable rate	35.60%	31.80%
Percentage of non-agency securities classified as fixed rate	63.50%	67.30%
Percentage of non-agency securities classified as floating rate	0.90%	0.90%

Mortgage-Backed and Credit Ri_4

Mortgage-Backed and Credit Risk Transfer Securities - Schedule of Fair Value of Available-for-sale Securities and Securities Accounted for under Fair Value Option by Asset Type (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Percentage of MBS and GSE CRT accounted for under the fair value option	99.00%	99.00%
Available-for-sale Securities	$ 70,197	$ 116,850
Securities under Fair Value Option	7,734,062	8,055,332
Total Fair Value	7,804,259	8,172,182
30 year fixed-rate
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0	0
Securities under Fair Value Option	7,701,523	8,050,866
Total Fair Value	7,701,523	8,050,866
Total Agency RMBS pass-through
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0	0
Securities under Fair Value Option	7,701,523	8,050,866
Total Fair Value	7,701,523	8,050,866
Agency-CMO
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	0	0
Securities under Fair Value Option	30,757	0
Total Fair Value	30,757	0
Non-Agency CMBS
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	62,909	109,583
Securities under Fair Value Option	0	0
Total Fair Value	62,909	109,583
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities	7,288	7,267
Securities under Fair Value Option	1,782	4,466
Total Fair Value	$ 9,070	$ 11,733

Mortgage-Backed and Credit Ri_5

Mortgage-Backed and Credit Risk Transfer Securities - Components of Carrying Value of MBS and GSE CRT Portfolio (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Principal/notional balance	$ 8,203,415,000	$ 8,557,917,000
Unamortized premium	250,771,000	391,644,000
Unamortized discount	(594,455,000)	(805,085,000)
Allowance for credit losses	0	(1,768,000)	$ 0
Gross unrealized gains	8,863,000	34,642,000
Gross unrealized losses	(64,335,000)	(5,168,000)
Fair Value	7,804,259,000	8,172,182,000
MBS
Debt Securities, Available-for-sale [Line Items]
Principal/notional balance	7,584,812,000	7,757,491,000
Unamortized premium	250,771,000	391,644,000
Unamortized discount	(11,902,000)	(10,067,000)
Allowance for credit losses	0	(1,768,000)
Gross unrealized gains	8,754,000	34,539,000
Gross unrealized losses	(60,741,000)	(4,527,000)
Fair Value	7,771,694,000	8,167,312,000
Interest-Only Securities
Debt Securities, Available-for-sale [Line Items]
Principal/notional balance	618,603,000	800,426,000
Unamortized premium	0	0
Unamortized discount	(582,553,000)	(795,018,000)
Allowance for credit losses	0	0
Gross unrealized gains	109,000	103,000
Gross unrealized losses	(3,594,000)	(641,000)
Fair Value	$ 32,565,000	$ 4,870,000

Mortgage-Backed and Credit Ri_6

Mortgage-Backed and Credit Risk Transfer Securities - Fair Value of Mortgage-Backed Securities According to Weighted Average Life Classification (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Less than one year	$ 23,150	$ 22,112
Greater than one year and less than five years	891,510	5,303,917
Greater than or equal to five years	6,889,599	2,846,153
Total	$ 7,804,259	$ 8,172,182

Mortgage-Backed and Credit Ri_7

Mortgage-Backed and Credit Risk Transfer Securities - Unrealized Losses and Estimated Fair Value of MBS and GSE CRT by Length of Time (Detail) $ in Thousands	Dec. 31, 2021USD ($)security	Dec. 31, 2020USD ($)security
Fair Value
Less than 12 Months	$ 6,861,576	$ 1,526,029
12 Months or More	1,042	1,612
Total	6,862,618	1,527,641
Unrealized Losses
Less than 12 Months	(63,262)	(4,965)
12 Months or More	(1,073)	(203)
Total	$ (64,335)	$ (5,168)
Number of Securities
Less than 12 Months (in securities) | security	64	27
12 Months or More (in securities) | security	9	7
Total (in securities) | security	73	34
30 year fixed-rate
Fair Value
Less than 12 Months	$ 6,838,999	$ 1,496,279
12 Months or More	0	0
Total	6,838,999	1,496,279
Unrealized Losses
Less than 12 Months	(60,741)	(4,108)
12 Months or More	0	0
Total	$ (60,741)	$ (4,108)
Number of Securities
Less than 12 Months (in securities) | security	54	20
12 Months or More (in securities) | security	0	0
Total (in securities) | security	54	20
Total Agency RMBS pass-through
Fair Value
Less than 12 Months	$ 6,838,999	$ 1,496,279
12 Months or More	0	0
Total	6,838,999	1,496,279
Unrealized Losses
Less than 12 Months	(60,741)	(4,108)
12 Months or More	0	0
Total	$ (60,741)	$ (4,108)
Number of Securities
Less than 12 Months (in securities) | security	54	20
12 Months or More (in securities) | security	0	0
Total (in securities) | security	54	20
Agency-CMO
Fair Value
Less than 12 Months	$ 21,810
12 Months or More	0
Total	21,810
Unrealized Losses
Less than 12 Months	(1,389)
12 Months or More	0
Total	$ (1,389)
Number of Securities
Less than 12 Months (in securities) | security	5
12 Months or More (in securities) | security	0
Total (in securities) | security	5
Non-Agency CMBS
Fair Value
Less than 12 Months		$ 27,069
12 Months or More		0
Total		27,069
Unrealized Losses
Less than 12 Months		(419)
12 Months or More		0
Total		$ (419)
Number of Securities
Less than 12 Months (in securities) | security		1
12 Months or More (in securities) | security		0
Total (in securities) | security		1
Non-Agency RMBS
Fair Value
Less than 12 Months	$ 767	$ 2,681
12 Months or More	1,042	1,612
Total	1,809	4,293
Unrealized Losses
Less than 12 Months	(1,132)	(438)
12 Months or More	(1,073)	(203)
Total	$ (2,205)	$ (641)
Number of Securities
Less than 12 Months (in securities) | security	5	6
12 Months or More (in securities) | security	9	7
Total (in securities) | security	14	13
Non-Agency IO
Fair Value
Total	$ 1,700
Unrealized Losses
Total	(2,100)
Non-Agency Residential Mortgage Backed Securities, Excluding Non-Agency IO
Unrealized Losses
Total	$ (136)

Mortgage-Backed and Credit Ri_8

Mortgage-Backed and Credit Risk Transfer Securities - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Allowance for credit losses	$ 0	$ 1,768,000	$ 0
Additional increases or decreases in the allowance for credit losses on securities that had an allowance recorded in a previous period	$ (1,768,000)	0
Impairment of non-agency securities		94,100,000
Non-Agency CMBS
Debt Securities, Available-for-sale [Line Items]
Allowance for credit losses		$ 1,768,000

Mortgage-Backed and Credit Ri_9

Mortgage-Backed and Credit Risk Transfer Securities - Roll-forward of Allowance For Credit Losses (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Allowance for Credit Loss [Roll Forward]
Beginning allowance for credit losses	$ (1,768,000)	$ 0
Additions to the allowance for credit losses on securities for which credit losses were not previously recorded	0	(1,768,000)
Additional increases or decreases in the allowance for credit losses on securities that had an allowance recorded in a previous period	1,768,000	0
Ending allowance for credit losses	$ 0	$ (1,768,000)

Mortgage-Backed and Credit R_10

Mortgage-Backed and Credit Risk Transfer Securities - OTTI included in earnings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Other-than-temporary credit impairment losses	$ 0	$ 0	$ 7,731
RMBS interest-only securities
Debt Securities, Available-for-sale [Line Items]
Other-than-temporary credit impairment losses			6,707
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Other-than-temporary credit impairment losses			$ 1,024

Mortgage-Backed and Credit R_11

Mortgage-Backed and Credit Risk Transfer Securities - Realized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Gross realized gains on sale of investments	$ 3,297	$ 656,915	$ 24,721
Gross realized losses on sale of investments	(284,521)	(1,020,696)	(16,682)
Impairment of investments the Company intends to sell or more likely than not will be required to sell before recovery of amortized cost basis and other impairments	0	(101,138)	0
Other-than-temporary impairment losses	0	0	(7,731)
Net unrealized gains (losses) on MBS and GSE CRT accounted for under the fair value option	(85,702)	(492,047)	624,158
Net unrealized gains (losses) on commercial loan	417	(1,164)	0
Realized loss on loan participation interest	0	(3,808)	0
Total gain (loss) on investments, net	$ (366,509)	$ (961,938)	$ 624,466

Mortgage-Backed and Credit R_12

Mortgage-Backed and Credit Risk Transfer Securities - Components of MBS and GSE CRT Interest Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Contractual net interest income (expense)		$ 6,300	$ 20,800
Interest Income	$ 167,056	277,400	772,657
Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Coupon Interest	201,694	161,845	488,650
Net (Premium Amortization)/ Discount Accretion	(41,881)	(32,737)	(76,676)
Interest Income	159,813	129,108	411,974
Agency CMBS
Debt Securities, Available-for-sale [Line Items]
Coupon Interest		35,822	88,462
Net (Premium Amortization)/ Discount Accretion		(1,744)	(4,712)
Interest Income		34,078	83,750
Non-Agency CMBS
Debt Securities, Available-for-sale [Line Items]
Coupon Interest	3,841	76,068	163,326
Net (Premium Amortization)/ Discount Accretion	2,695	14,721	15,347
Interest Income	6,536	90,789	178,673
Non-Agency RMBS
Debt Securities, Available-for-sale [Line Items]
Coupon Interest	1,950	13,895	52,857
Net (Premium Amortization)/ Discount Accretion	(1,264)	1,107	13,164
Interest Income	686	15,002	66,021
GSE CRT
Debt Securities, Available-for-sale [Line Items]
Coupon Interest		10,232	37,032
Net (Premium Amortization)/ Discount Accretion		(2,560)	(7,842)
Interest Income		7,672	29,190
Other
Debt Securities, Available-for-sale [Line Items]
Coupon Interest	21	751	3,049
Net (Premium Amortization)/ Discount Accretion	0	0	0
Interest Income	21	751	3,049
MBS
Debt Securities, Available-for-sale [Line Items]
Coupon Interest	207,506	298,613	833,376
Net (Premium Amortization)/ Discount Accretion	(40,450)	(21,213)	(60,719)
Interest Income	$ 167,056	$ 277,400	$ 772,657

Other Assets - Schedule of Othe

Other Assets - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Commercial loan, held-for-investment	$ 23,515	$ 23,098
Investments in unconsolidated ventures	12,476	16,408
Prepaid expenses and other assets	1,518	1,657
Total	$ 37,509	$ 41,163

Other Assets - Additional Infor

Other Assets - Additional Information (Details) - Commercial - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items]
Face Amount of Mortgages	$ 23,900	$ 23,900
Weighted average coupon rate	8.60%	8.65%
Unrealized gains (losses)	$ 417	$ (1,200)

Borrowings - Schedule of Borrow

Borrowings - Schedule of Borrowings (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Secured Debt, Excluding Asset-backed Securities
Total Borrowings
Amount Outstanding	$ 6,987,834	$ 7,228,699
Weighted Average Interest Rate	0.14%	0.21%
Weighted Average Remaining Maturity (days)	29 days	14 days
Agency RMBS
Repurchase Agreements - Agency RMBS
Amount Outstanding	$ 6,987,834	$ 7,228,699
Weighted Average Interest Rate	0.14%	0.21%
Weighted Average Remaining Maturity (days)	29 days	14 days

Borrowings - Additional Informa

Borrowings - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2021
Minimum
Repurchase Agreement Counterparty
Repurchase agreements, term	1 month
Maximum
Repurchase Agreement Counterparty
Repurchase agreements, term	6 months

Collateral Positions (Details)

Collateral Positions (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Total repurchase agreements collateral pledged	$ 7,329,702,000	$ 7,615,635,000
Total collateral pledged	7,554,078,000	7,860,586,000
Cash	280,000	3,546,000
Non-cash collateral	248,000	4,226,000
Total collateral held	$ 528,000	$ 7,772,000
Collateral ratio	105.00%	105.00%
Derivative instruments:
Derivative [Line Items]
Total derivative instruments collateral pledged	$ 224,376,000	$ 244,951,000
Repurchase Agreements:
Derivative [Line Items]
Cash	0	1,916,000
Non-cash collateral	248,000	4,226,000
Total collateral held	248,000	6,142,000
Interest Rate Swaps
Derivative [Line Items]
Cash	280,000	1,630,000
Total collateral held	280,000	1,630,000
Cash
Derivative [Line Items]
Total repurchase agreements collateral pledged	3,527,000	700,000
Total collateral pledged	7,985,000	1,078,000
Cash | Derivative instruments:
Derivative [Line Items]
Total derivative instruments collateral pledged	4,458,000	378,000
Restricted cash
Derivative [Line Items]
Total collateral pledged	219,918,000	244,573,000
Restricted cash | Derivative instruments:
Derivative [Line Items]
Total derivative instruments collateral pledged	219,918,000	244,573,000
Agency RMBS
Derivative [Line Items]
Total repurchase agreements collateral pledged	7,326,175,000	7,614,935,000
Total collateral pledged	$ 7,326,175,000	$ 7,614,935,000

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities - Outstanding Interest Rate Swaptions and Derivative Instrument Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	$ 8,033,084
Additions	5,215,279
Settlement, Termination, Expiration or Exercise	(3,584,767)
Notional Amount as of December 31, 2021	9,663,596
Transitioned From LIBOR to SOFR
Changes in notional amount of derivative instruments [Roll Forward]
Additions	7,300,000
Settlement, Termination, Expiration or Exercise	(7,300,000)
Interest Rate Swaps
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	6,300,000
Additions	4,250,000
Settlement, Termination, Expiration or Exercise	(2,500,000)
Notional Amount as of December 31, 2021	8,050,000
Interest Rate Swaptions
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	0
Additions	1,000,000
Settlement, Termination, Expiration or Exercise	(1,000,000)
Notional Amount as of December 31, 2021	0
Currency Forward Contracts
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	33,084
Additions	65,279
Settlement, Termination, Expiration or Exercise	(84,767)
Notional Amount as of December 31, 2021	13,596
TBA Purchase Contracts
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	1,700,000
Additions	23,125,000
Settlement, Termination, Expiration or Exercise	(23,225,000)
Notional Amount as of December 31, 2021	1,600,000
TBA Sale Contracts
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2020	0
Additions	(23,225,000)
Settlement, Termination, Expiration or Exercise	23,225,000
Notional Amount as of December 31, 2021	0
Interest Rate Swap, Forward Start Dates | 1-Month LIBOR
Changes in notional amount of derivative instruments [Roll Forward]
Notional Amount as of December 31, 2021	$ 1,300,000

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures
Derivative gain (loss) reclassified as a decrease (increase) to interest expense	$ 122,611	$ (851,050)	$ (534,755)
Accumulated other comprehensive income	1,402,135	1,367,158	2,931,899	$ 2,286,697
Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures
Derivative gain (loss) reclassified as a decrease (increase) to interest expense	(22,000)	(23,800)	$ (23,700)
Amount reclassified to interest expenses within next 12 months	19,700
Derivatives and hedging, including portion attributable to noncontrolling interest | Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures
Accumulated other comprehensive income	$ 30,100	$ 52,100
Minimum | Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures
Repurchase obligation maturity	1 month
Maximum | Interest Rate Swaps
Derivative Instruments and Hedging Activities Disclosures
Repurchase obligation maturity	6 months

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities - Schedule of Interest Rate Swaps Outstanding (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 9,663,596	$ 8,033,084
Interest Rate Swap, Fixed Rate
Derivative [Line Items]
Notional Amount	$ 6,300,000	$ 6,300,000
Weighted Average Fixed Pay Rate	0.30%	0.41%
Weighted Average Floating Receive Rate	0.05%	0.15%
Weighted Average Years to Maturity	5 years 8 months 12 days	6 years 8 months 12 days
Interest Rate Swap, Forward Start Dates | 1-Month LIBOR
Derivative [Line Items]
Notional Amount	$ 1,300,000
Weighted Average Fixed Pay Rate	0.99%
Weighted Average Years to Maturity	20 years 9 months 18 days
Interest Rate Swap, Variable Rate | 1-Month LIBOR
Derivative [Line Items]
Notional Amount	$ 1,750,000
Weighted Average Fixed Pay Rate	0.05%
Weighted Average Floating Receive Rate	0.98%
Weighted Average Years to Maturity	4 years 10 months 24 days
Less than 3 years | Interest Rate Swap, Fixed Rate
Derivative [Line Items]
Notional Amount	$ 1,000,000
Weighted Average Fixed Pay Rate	0.06%
Weighted Average Floating Receive Rate	0.05%
Weighted Average Years to Maturity	2 years 7 months 6 days
Less than 3 years | Interest Rate Swap, Variable Rate | 1-Month LIBOR
Derivative [Line Items]
Notional Amount	$ 1,000,000
Weighted Average Fixed Pay Rate	0.05%
Weighted Average Floating Receive Rate	0.77%
Weighted Average Years to Maturity	2 years 7 months 6 days
3 to 5 years | Interest Rate Swap, Fixed Rate
Derivative [Line Items]
Notional Amount	$ 1,250,000	$ 2,250,000
Weighted Average Fixed Pay Rate	0.12%	0.20%
Weighted Average Floating Receive Rate	0.05%	0.15%
Weighted Average Years to Maturity	3 years 7 months 6 days	4 years 2 months 12 days
5 to 7 years | Interest Rate Swap, Fixed Rate
Derivative [Line Items]
Notional Amount	$ 2,225,000	$ 1,775,000
Weighted Average Fixed Pay Rate	0.32%	0.43%
Weighted Average Floating Receive Rate	0.05%	0.15%
Weighted Average Years to Maturity	5 years 10 months 24 days	6 years 8 months 12 days
5 to 7 years | Interest Rate Swap, Variable Rate | 1-Month LIBOR
Derivative [Line Items]
Notional Amount	$ 500,000
Weighted Average Fixed Pay Rate	0.05%
Weighted Average Floating Receive Rate	1.26%
Weighted Average Years to Maturity	6 years 10 months 24 days
7 to 10 years | Interest Rate Swap, Fixed Rate
Derivative [Line Items]
Notional Amount	$ 1,825,000	$ 2,275,000
Weighted Average Fixed Pay Rate	0.52%	0.60%
Weighted Average Floating Receive Rate	0.05%	0.15%
Weighted Average Years to Maturity	8 years 7 months 6 days	9 years 2 months 12 days
7 to 10 years | Interest Rate Swap, Variable Rate | 1-Month LIBOR
Derivative [Line Items]
Notional Amount	$ 250,000
Weighted Average Fixed Pay Rate	0.05%
Weighted Average Floating Receive Rate	1.27%
Weighted Average Years to Maturity	10 years

Derivatives and Hedging Activ_6

Derivatives and Hedging Activities - Schedule of TBA Contracts (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 9,663,596	$ 8,033,084
TBA purchase contracts
Derivative [Line Items]
Notional Amount	1,600,000	1,700,000
Implied Cost Basis	1,636,906	1,772,211
Implied Market Value	1,633,955	1,782,104
Net Carrying Value	(2,951)	9,893
Currency Forward Contracts
Derivative [Line Items]
Notional Amount	13,596	33,084
Currency Forward Contracts | Euro
Derivative [Line Items]
Notional Amount	$ 13,600	$ 33,100

Derivatives and Hedging Activ_7

Derivatives and Hedging Activities - Fair Value of Derivative Financial Instruments Classification on Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivatives, Fair Value
Derivative Assets	$ 270	$ 10,004
Derivative Liabilities	14,356	6,344
Interest Rate Swaps
Derivatives, Fair Value
Derivative Assets	0	0
Derivative Liabilities	11,405	5,537
Currency Forward Contracts
Derivatives, Fair Value
Derivative Assets	270	111
Derivative Liabilities	0	807
TBAs
Derivatives, Fair Value
Derivative Assets	0	9,893
Derivative Liabilities	$ 2,951	$ 0

Derivatives and Hedging Activ_8

Derivatives and Hedging Activities - Effect of Derivative Financial Instruments on Statement of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss)
Contractual net interest income (expense)		$ 6,300	$ 20,800
Gain (loss) on derivative instruments, net	$ 122,611	(851,050)	(534,755)
Interest Rate Swaps
Derivative Instruments, Gain (Loss)
Gain (loss) on derivative instruments, net	(22,000)	(23,800)	(23,700)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net	156,157	(844,577)	(597,077)
Contractual net interest income (expense)	(15,803)	8,047	35,840
Unrealized gain (loss), net	(17,743)	(14,520)	26,482
Gain (loss) on derivative instruments, net	122,611	(851,050)	(534,755)
Not Designated as Hedging Instrument | GSE CRT Embedded Derivatives
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net		(31,354)	0
Contractual net interest income (expense)		6,323	20,833
Unrealized gain (loss), net		(10,281)	(12,490)
Gain (loss) on derivative instruments, net		(35,312)	8,343
Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net	185,232	(857,753)	(440,626)
Contractual net interest income (expense)	(15,803)	8,047	35,840
Unrealized gain (loss), net	(5,869)	(24,068)	18,826
Gain (loss) on derivative instruments, net	163,560	(873,774)	(385,960)
Not Designated as Hedging Instrument | Futures Contracts
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net			(157,929)
Contractual net interest income (expense)			0
Unrealized gain (loss), net			7,836
Gain (loss) on derivative instruments, net			(150,093)
Not Designated as Hedging Instrument | Interest Rate Swaptions
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net	(553)
Contractual net interest income (expense)	0
Unrealized gain (loss), net	0
Gain (loss) on derivative instruments, net	(553)
Not Designated as Hedging Instrument | Currency Forward Contracts
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net	209	(1,301)	1,478
Contractual net interest income (expense)	0	0	0
Unrealized gain (loss), net	970	(345)	(180)
Gain (loss) on derivative instruments, net	1,179	(1,646)	$ 1,298
Not Designated as Hedging Instrument | TBAs
Derivative Instruments, Gain (Loss)
Realized gain (loss) on derivative instruments, net	(28,731)	14,477
Contractual net interest income (expense)	0	0
Unrealized gain (loss), net	(12,844)	9,893
Gain (loss) on derivative instruments, net	$ (41,575)	$ 24,370

Offsetting Assets and Liabili_3

Offsetting Assets and Liabilities - Additional Information (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Offsetting Liabilities [Line Items]
Derivative liabilities, at fair value	$ 14,356	$ 6,344
Central Clearing Counterparty
Offsetting Liabilities [Line Items]
Derivative liabilities, at fair value	$ 11,400	$ 5,500

Offsetting Assets and Liabili_4

Offsetting Assets and Liabilities - Offsetting of Derivative Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Derivatives
Gross amounts of recognized assets	$ 270	$ 10,004
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets (Liabilities) presented in the Consolidated Balance Sheets	270	10,004
Gross amounts not offset in the consolidated balance sheets, financial instruments	0	(111)
Gross amounts not offset in the consolidated balance sheets, cash collateral pledged	(270)	(1,630)
Net Amount	$ 0	$ 8,263

Offsetting Assets and Liabili_5

Offsetting Assets and Liabilities - Offsetting of Derivative Liabilities (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Derivatives:
Gross amounts of recognized liabilities	$ (2,951,000)	$ (807,000)
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets (Liabilities) presented in the Consolidated Balance Sheets	(2,951,000)	(807,000)
Gross amounts not offset in the consolidated balance sheets, financial instruments	0	111,000
Gross amounts not offset in the consolidated balance sheets, cash collateral pledged	2,951,000	610,000
Net Amount	0	(86,000)
Repurchase Agreements:
Gross Amounts of Recognized Assets (Liabilities)	(6,987,834,000)	(7,228,699,000)
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets (Liabilities) presented in the Consolidated Balance Sheets	(6,987,834,000)	(7,228,699,000)
Gross amounts not offset in the consolidated balance sheets, financial instruments	6,987,834,000	7,228,699,000
Gross amounts not offset in the consolidated balance sheets, cash collateral pledged	0	0
Net Amount	0	0
Gross Amounts of Recognized Assets (Liabilities)	(6,990,785,000)	(7,229,506,000)
Gross Amounts Offset in the Consolidated Balance Sheets	0	0
Net Amounts of Assets (Liabilities) presented in the Consolidated Balance Sheets	(6,990,785,000)	(7,229,506,000)
Gross amounts not offset with financial assets (liabilities) in the balance sheets, financial instruments	6,987,834,000	7,228,810,000
Gross amounts not offset with financial assets (liabilities) in the balance sheets, cash collateral (received) pledged	2,951,000	610,000
Net Amount	0	(86,000)
Cash collateral pledged on derivatives	224,400,000	245,000,000
Cash collateral received	280,000	3,546,000
Fair value of securities pledged under repurchase agreements, excluding cash collateral	7,300,000,000	7,600,000,000
Securities sold under agreements to repurchase fair value of collateral	7,329,702,000	7,615,635,000
Cash
Repurchase Agreements:
Securities sold under agreements to repurchase fair value of collateral	3,527,000	700,000
Interest Rate Swaps
Repurchase Agreements:
Cash collateral received	280,000	1,630,000
Repurchase Agreements:
Repurchase Agreements:
Cash collateral received	$ 0	$ 1,916,000

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Fair Values Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities	$ 7,804,259	$ 8,172,182
Derivative assets	270	10,004
Derivative liabilities	2,951	807
Commercial loan, held-for-investment	23,515	23,098
Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities	7,804,259	8,172,182
Derivative assets	270	10,004
Other assets	35,991	39,506
Total assets	7,840,520	8,221,692
Derivative liabilities	14,356	6,344
Total liabilities	14,356	6,344
Recurring | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities	0	0
Derivative assets	0	0
Other assets	0	0
Total assets	0	0
Derivative liabilities	0	0
Total liabilities	0	0
Recurring | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities	7,804,259	8,172,182
Derivative assets	270	10,004
Other assets	0	0
Total assets	7,804,529	8,182,186
Derivative liabilities	14,356	6,344
Total liabilities	14,356	6,344
Recurring | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage-backed securities	0	0
Derivative assets	0	0
Other assets	23,515	23,098
Total assets	23,515	23,098
Derivative liabilities	0	0
Total liabilities	0	0
Recurring | NAV as a practical expedient
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
NAV as a practical expedient	$ 12,476	$ 16,408

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Embedded Derivatives Level 3 Roll Forward (Details) - Embedded Credit Derivative - GSE CRT $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 10,281
Sales and settlements	31,354
Realized credit derivative gains (losses), net	(31,354)
Unrealized credit derivative gains (losses), net	(10,281)
Ending balance	$ 0

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Reconciliation of Beginning and Ending Fair Value Measurement Utilizing Level 3 Inputs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Loan Participation
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 44,654
Purchases/Advances	0
Repayments	(19,269)
Sales	(21,577)
Realized losses	(3,808)
Ending balance	0	$ 44,654
Commercial loan
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	23,098	24,055
Repayments	0	(136)
Unrealized gain (loss)	417	(1,163)
Ending balance		23,098
Commercial loan | Cumulative Effect, Period of Adoption, Adjustment
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 0	342
Ending balance		$ 0

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Schedule of Fair Value Measurement of Commercial Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Commercial loan, held-for-investment	$ 23,515	$ 23,098
Measurement Input, Discount Rate | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loan Receivable Measurement Input	18.80%	29.90%

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Carrying Value and Estimated Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Carrying Value
Financial Liabilities:
Repurchase agreements	$ 6,987,834	$ 7,228,699
Total	6,987,834	7,228,699
Estimated Fair Value
Financial Liabilities:
Repurchase agreements	6,987,806	7,228,719
Total	$ 6,987,806	$ 7,228,719

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Management fee — related party	$ 21,080	$ 29,367	$ 38,173
Investment in money market or mutual funds managed by affiliates of a related party	357,134	148,011
Proceeds from sale of mortgage-backed and credit risk transfer securities	$ 16,273,956	25,028,464	3,311,884
Management
Related Party Transaction [Line Items]
Fee paid by company to manager as percentage of company's shareholders' equity	1.50%
Termination fee multiplier	3
Termination fees assessment period	24 months
Invesco Advisers, Inc. | Affiliated Entity
Related Party Transaction [Line Items]
Management fee — related party	$ 1,100	1,100	$ 917
Investment in money market or mutual funds managed by affiliates of a related party		1,900
Invesco Advisers, Inc. | Affiliated Entity | Non-Agency CMBS
Related Party Transaction [Line Items]
Proceeds from sale of mortgage-backed and credit risk transfer securities		40,000
Realized gain		$ 4,100

Related Party Transactions - Sc

Related Party Transactions - Schedule of Related Party Transactions (Details) - Manager - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Related Party Transaction [Line Items]
Total incurred costs, originally paid by our Manager	$ 7,800	$ 11,084	$ 8,293
Incurred costs, prepaid or expensed
Related Party Transaction [Line Items]
Total incurred costs, originally paid by our Manager	7,108	10,845	7,343
Incurred costs, charged against equity as a cost of raising capital
Related Party Transaction [Line Items]
Total incurred costs, originally paid by our Manager	$ 692	$ 239	$ 950

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jun. 30, 2020	May 09, 2020	Jun. 30, 2021	May 31, 2021	Feb. 28, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jun. 16, 2021
Class of Stock [Line Items]
Issuance and redemption costs of redeemed preferred stock						$ 4,682	$ 0	$ 0
Common stock dividend percentage of cash limit		10.00%
Common stock dividends		$ 8,200				$ 105,992	$ 37,202	$ 252,071
Common stock dividends (in shares)	16,338,511
Payments of ordinary dividends, common stock	$ 8,200
Common stock dividends shares calculation base (in USD per share)	$ 4.5435
Restricted Stock
Class of Stock [Line Items]
Shares granted during the year (in shares)				127,115
Series A Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, redemption amount									$ 140,000
Preferred stock, liquidation preference (in USD per share)									$ 25
Preferred stock dividend rate						7.75%
Preferred stock, price per share per annum						$ 1.9375
Series B Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock dividend rate						7.75%
Preferred stock, price per share per annum						$ 1.9375
Preferred stock redemption price (in USD per share)						$ 25
Series B Cumulative Redeemable Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock dividends basis spread on variable rate						5.18%
Series C Cumulative Redeemable Preferred Stock
Class of Stock [Line Items]
Preferred stock, liquidation preference (in USD per share)						$ 25
Preferred stock dividend rate						7.50%
Preferred stock, price per share per annum						$ 1.875
Series C Cumulative Redeemable Preferred Stock | LIBOR
Class of Stock [Line Items]
Preferred stock dividends basis spread on variable rate						5.289%
Preferred Stock
Class of Stock [Line Items]
Preferred stock redemption price (in USD per share)						$ 25
Equity distribution agreement, number of shares to sell						5,500,000
Common Stock
Class of Stock [Line Items]
Number of shares sold in transaction (in shares)			43,125,000		27,600,000
Sale of stock, price (in USD per share)			$ 3.39		$ 3.75
Proceeds from issuance of common stock			$ 145,900		$ 103,100
Number of shares authorized to be repurchased (in shares)						18,163,982
Common Stock | Equity Distribution Agreement
Class of Stock [Line Items]
Equity distribution agreement, number of shares to sell						56,865,980
Number of shares sold in transaction (in shares)						55,744,020	21,849,740
Proceeds from issuance of common stock						$ 180,500	$ 73,700
Payments of stock issuance costs						$ 2,600	$ 1,200

Stockholders' Equity - Componen

Stockholders' Equity - Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated other comprehensive income (loss) from derivative instruments:
Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net	$ 756	$ (223,416)	$ 83,965
Reclassification of unrealized (gain) loss on sale of mortgage-backed and credit risk transfer securities to gain (loss) on investments, net	0	13,940	9,072
Reclassification of unrealized loss on available-for-sale securities to (increase) decrease in provision for credit losses	0	1,768	0
Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense	(22,000)	(23,794)	(23,729)
Currency translation adjustments on investment in unconsolidated venture	(75)	1,144	(1,158)
Total other comprehensive income (loss)	(21,319)	(230,358)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	1,367,158	2,931,899	2,286,697
Total other comprehensive income (loss)	(21,319)	(230,358)	68,150
Ending balance	1,402,135	1,367,158	2,931,899
Equity method investments
Accumulated other comprehensive income (loss) from derivative instruments:
Currency translation adjustments on investment in unconsolidated venture		1,144
Total other comprehensive income (loss)	(75)	1,144
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	499	(645)
Total other comprehensive income (loss)	(75)	1,144
Ending balance	424	499	(645)
Available-for-sale securities
Accumulated other comprehensive income (loss) from derivative instruments:
Unrealized gain (loss) on mortgage-backed and credit risk transfer securities, net	756	(223,416)
Reclassification of unrealized (gain) loss on sale of mortgage-backed and credit risk transfer securities to gain (loss) on investments, net		13,940
Reclassification of unrealized loss on available-for-sale securities to (increase) decrease in provision for credit losses		1,768
Total other comprehensive income (loss)	756	(207,708)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	5,993	213,701
Total other comprehensive income (loss)	756	(207,708)
Ending balance	6,749	5,993	213,701
Derivatives and hedging
Accumulated other comprehensive income (loss) from derivative instruments:
Reclassification of amortization of net deferred (gain) loss on de-designated interest rate swaps to repurchase agreements interest expense	(22,000)	(23,794)
Total other comprehensive income (loss)	(22,000)	(23,794)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	52,113	75,907
Total other comprehensive income (loss)	(22,000)	(23,794)
Ending balance	30,113	52,113	75,907
Accumulated other comprehensive income
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	58,605	288,963	220,813
Total other comprehensive income (loss)	(21,319)	(230,358)	68,150
Ending balance	$ 37,286	$ 58,605	$ 288,963

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands	Jun. 16, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Class of Stock [Line Items]
Common stock dividend declared (in USD per share)		$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.08	$ 0.05	$ 0.02	$ 0.50
Dividends, common stock		$ 29,689	$ 28,057	$ 26,071	$ 22,176	$ 16,258	$ 9,070	$ 3,626	$ 82,483
Common stock, dividends declared in prior year, taxable in current year (in dollars per share)											$ 0.080000	$ 0.500000
Common stock, dividends declared and taxable in current year (in dollars per share)										$ 0.270000	0.570000
Ordinary Dividends
Class of Stock [Line Items]
Common stock dividend declared (in USD per share)										0	0
Return of Capital
Class of Stock [Line Items]
Common stock dividend declared (in USD per share)										0.350000	1.070000
Capital Gain Distribution
Class of Stock [Line Items]
Common stock dividend declared (in USD per share)										0	0
Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)	$ 0.2691				$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844
Dividends, preferred stock	$ 1,500				$ 2,713	$ 2,713	$ 2,713	$ 2,712	$ 2,713
Preferred stock, dividends declared in prior year, taxable in current year (in dollars per share)											0.484400	$ 0.484400
Preferred stock, dividends declared and taxable in current year (in dollars per share)										0.484400	1.453200
Series A Preferred Stock | Ordinary Dividends
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0.968800	0
Series A Preferred Stock | Return of Capital
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0	1.937600
Series A Preferred Stock | Capital Gain Distribution
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0	0
Series B Preferred Stock
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)		$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844
Dividends, preferred stock		$ 3,003	$ 3,003	$ 3,004	$ 3,003	$ 3,003	$ 3,003	$ 3,004	$ 3,003
Preferred stock, dividends declared and taxable in current year (in dollars per share)										1.936700	1.937600
Series B Preferred Stock | Ordinary Dividends
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										1.936700	0
Series B Preferred Stock | Return of Capital
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0	1.937600
Series B Preferred Stock | Capital Gain Distribution
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0	0
Series C Preferred Stock
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)		$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875
Dividends, preferred stock		$ 5,391	$ 5,391	$ 5,390	$ 5,391	$ 5,391	$ 5,391	$ 5,390	$ 5,391
Preferred stock, dividends declared and taxable in current year (in dollars per share)										1.875000	1.875000
Series C Preferred Stock | Ordinary Dividends
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										0.590720	0
Series C Preferred Stock | Return of Capital
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										1.284280	1.875000
Series C Preferred Stock | Capital Gain Distribution
Class of Stock [Line Items]
Preferred stock dividend declared (in USD per share)										$ 0	$ 0

Earnings per Common Share (Deta

Earnings per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basic Earnings:
Net income (loss) available to common stockholders	$ (132,477)	$ (1,718,778)	$ 319,675
Basic Earnings:
Shares available to common stockholders (in shares)	275,132,233	173,730,389	132,305,568
Effect of dilutive securities:
Restricted stock awards (in shares)	0	0	12,000
Dilutive Shares (in shares)	275,132,233	173,730,389	132,317,853
Earnings (loss) per share:
Basic (in usd per share)	$ (0.48)	$ (9.89)	$ 2.42
Diluted (in usd per share)	$ (0.48)	$ (9.89)	$ 2.42
Restricted stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Potential common shares excluded from diluted earnings per common share (in shares)	16,061	11,017

Commitments and Contingencies (

Commitments and Contingencies (Details) $ in Millions	Dec. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
Undrawn capital and purchase commitments for unconsolidated ventures sponsored by an affiliate	$ 6.5

Subsequent Events (Details)

Subsequent Events (Details) - $ / shares	Feb. 16, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Series B Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)		$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844	$ 0.4844
Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)		$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875	$ 0.46875
Subsequent Event | Series B Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)	$ 0.4844
Subsequent Event | Series C Preferred Stock
Subsequent Event [Line Items]
Preferred stock, dividends (in USD per share)	$ 0.46875

Schedule IV Mortgage Loans on_2

Schedule IV Mortgage Loans on Real Estate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Mortgage Loans on Real Estate
Carrying Amount of Mortgages	$ 23,515	$ 23,098	$ 24,055
Federal income tax basis of mortgage loan	23,900
Reconciliation of Carrying Value of Mortgage Loans on Real Estate:
Beginning balance	23,098	24,055	31,582
Additions:
Unrealized gain	417	0	0
Deductions:
Collection of principal	0	136	7,527
Unrealized loss	0	821	0
Ending balance	23,515	$ 23,098	$ 24,055
Private Placement
Mortgage Loans on Real Estate
Face Amount of Mortgages	23,919
Carrying Amount of Mortgages	23,515
Principal Amount of Loans Subject to Delinquent Principal or Interest	0
Deductions:
Ending balance	23,515
TEXAS | Hotel | Private Placement
Mortgage Loans on Real Estate
Face Amount of Mortgages	23,919
Carrying Amount of Mortgages	23,515
Principal Amount of Loans Subject to Delinquent Principal or Interest	$ 0
Interest rate	8.50%
Deductions:
Ending balance	$ 23,515