Anworth Mortgage Asset (RC+C) 10-Q 7 May 19 2019 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 06, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	ANH
Entity Registrant Name	ANWORTH MORTGAGE ASSET CORP
Entity Central Index Key	0001047884
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		98,645,229

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
ASSETS
Agency MBS at fair value (including $3,421,455 and $3,433,252 pledged to counterparties at March 31, 2019 and December 31, 2018, respectively)		$ 3,745,091	$ 3,548,719
Non-Agency MBS at fair value (including $700,391 and $726,428 pledged to counterparties at March 31, 2019 and December 31, 2018, respectively)		768,597	795,203
Residential mortgage loans held-for-securitization		129,583	11,660
Residential mortgage loans held-for-investment	[1]	535,077	549,016
Residential real estate		13,752	13,782
Cash and cash equivalents		21,997	3,165
Reverse repurchase agreements			20,000
Restricted cash		75,513	30,296
Interest and dividends receivable		17,539	16,872
Derivative instruments at fair value		27,396	46,207
Right to use asset - operating lease		1,660	1,794
Prepaid expenses and other		5,524	2,986
Total Assets		5,341,729	5,039,700
Liabilities:
Accrued interest payable		16,084	24,828
Repurchase agreements		3,760,634	3,811,627
Warehouse line of credit		15,442
Asset-backed securities issued by securitization trusts	[1]	525,712	539,651
Junior subordinated notes.		37,380	37,380
Derivative instruments at fair value		36,261	15,901
Payable for purchased loans		112,316	11,660
Derivative counterparty margin		5,238
Accrued expenses and other		1,045	654
Long-term lease obligation		1,660	1,794
Total Liabilities		4,754,879	4,458,595
Series B Cumulative Convertible Preferred Stock: par value $0.01 per share; liquidating preference $25.00 per share ($19,494 and $19,494, respectively); 780 and 780 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively		19,455	19,455
Stockholders' Equity:
Common Stock: par value $0.01 per share; authorized 200,000 shares, 98,565 and 98,483 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively		986	985
Additional paid-in capital		982,344	981,964
Accumulated other comprehensive income consisting of unrealized gains and losses		9,654	(30,792)
Accumulated deficit		(521,070)	(485,988)
Total Stockholders' Equity		567,395	561,650
Total Liabilities and Stockholders' Equity		5,341,729	5,039,700
Agency MBS
ASSETS
Agency MBS at fair value (including $3,421,455 and $3,433,252 pledged to counterparties at March 31, 2019 and December 31, 2018, respectively)		3,421,455	3,433,252
Liabilities:
Repurchase agreements		3,215,000	3,235,000
Payable for purchased loans		227,997
Series A Preferred Stock
Stockholders' Equity:
Cumulative Preferred Stock		46,537	46,537
Total Stockholders' Equity		46,537	46,537
Series C Preferred Stock
Stockholders' Equity:
Cumulative Preferred Stock		48,944	48,944
Total Stockholders' Equity		48,944	48,944
Preferred Stock
Liabilities:
Dividends payable on stock		2,297	2,297
Common Stock
Liabilities:
Dividends payable on stock		12,813	12,803
Stockholders' Equity:
Total Stockholders' Equity		$ 986	$ 985
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Agency MBS pledged to counterparties at fair value	$ 3,745,091,000	$ 3,548,719,000
Series B Cumulative Convertible Preferred Stock, par value	$ 0.01	$ 0.01
Series B Cumulative Convertible Preferred Stock, liquidating preference per share	$ 25	$ 25
Series B Cumulative Convertible Preferred Stock, liquidating preference	$ 19,494,000	$ 19,494,000
Series B Cumulative Convertible Preferred Stock, shares issued	779,743	780,000
Series B Cumulative Convertible Preferred Stock, shares outstanding	779,743	780,000
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, authorized	200,000,000	200,000,000
Common Stock, issued	98,564,889	98,483,000
Common Stock, outstanding	98,564,889	98,483,000
Total assets	$ 5,341,729,000	$ 5,039,700,000
Accrued interest receivable	17,539,000	16,872,000
Total liabilities	4,754,879,000	4,458,595,000
Accrued interest payable	16,084,000	24,828,000
Agency MBS
Agency MBS pledged to counterparties at fair value	3,421,455,000	3,433,252,000
Non-Agency MBS
Agency MBS pledged to counterparties at fair value	$ 700,391,000	$ 726,428,000
Series A Preferred Stock
Cumulative Preferred Stock, par value	$ 0.01	$ 0.01
Cumulative Preferred Stock, liquidating preference per share	$ 25	$ 25
Cumulative Preferred Stock, liquidating preference	$ 47,984,000	$ 47,984,000
Cumulative Preferred Stock, shares issued	1,919,378	1,919,000
Cumulative Preferred Stock, shares outstanding	1,919,378	1,919,000
Series C Preferred Stock
Cumulative Preferred Stock, par value	$ 0.01	$ 0.01
Cumulative Preferred Stock, liquidating preference per share	$ 25	$ 25
Cumulative Preferred Stock, liquidating preference	$ 50,257,000	$ 50,257,000
Cumulative Preferred Stock, shares issued	2,010,278	2,010,000
Cumulative Preferred Stock, shares outstanding	2,010,278	2,010,000
Variable Interest Entities Primary Beneficiary
Total assets	$ 537,000,000	$ 551,000,000
Accrued interest receivable	1,800,000	1,800,000
Total liabilities	527,000,000	541,000,000
Accrued interest payable	$ 1,700,000	$ 1,700,000

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and other income:
Interest-Agency MBS	$ 25,711	$ 24,044
Interest-Non-Agency MBS	10,466	10,021
Interest-residential mortgage loans	5,368	6,238
Interest-residential mortgage loans held-for-securitization	86
Other interest income	19	28
Interest and Dividend Income, Operating, Total	41,650	40,331
Interest Expense:
Interest expense on repurchase agreements	27,136	19,093
Interest expense on asset-backed securities	5,200	6,070
Interest expense on warehouse line of credit	234
Interest expense on junior subordinated notes	547	447
Interest Expense, Total	33,117	25,610
Net interest income	8,533	14,721
Operating Expenses:
Management fee to related party	(1,724)	(1,737)
Rental properties depreciation and expenses	(355)	(386)
General and administrative expenses	(967)	(1,110)
Total operating expenses	(3,046)	(3,233)
Other income:
Income-rental properties	436	451
Realized net (loss) on sale of MBS	(6,147)	(11,987)
Impairment charge on Non-Agency MBS		(18)
Unrealized gain (loss) on Agency MBS held as trading investments	(14,900)	8,900
(Loss) gain on derivatives, net	(27,289)	13,412
Total other (loss)	(25,457)	(14,341)
Net (loss) income	(19,970)	(2,853)
Dividends on preferred stock	(2,297)	(2,297)
Net (loss) to common stockholders	$ (22,267)	$ (5,150)
Basic (loss) per common share	$ (0.23)	$ (0.05)
Diluted (loss) per common share	$ (0.23)	$ (0.05)
Basic weighted average number of shares outstanding	98,537	98,185
Diluted weighted average number of shares outstanding	98,537	98,185
Agency MBS
Other income:
Realized (loss) on sales of Agency MBS held as trading investments	$ (7,363)	$ (7,327)
Unrealized gain (loss) on Agency MBS held as trading investments	$ 14,906	$ (8,890)

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net (loss)	$ (19,970)	$ (2,853)
Amortization of unrealized gains on interest rate swaps remaining in other comprehensive income	1,003	940
Reclassification adjustment for interest (income) on interest rage swaps included in net (loss)		(194)
Other comprehensive income (loss)	40,446	(22,081)
Comprehensive income (loss)	20,476	(24,934)
Agency MBS
Available-for-sale, fair value adjustment	25,109	(35,481)
Reclassification adjustment for (gain) loss on sales included in net (loss) income	6,169	11,945
Non-Agency MBS
Available-for-sale, fair value adjustment	8,187	667
Reclassification adjustment for (gain) loss on sales included in net (loss) income	$ (22)	$ 42

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock Shares Outstanding	Common Stock	Additional Paid-In Capital	Accum. Other Comp. Income Gain Agency MBS	Accum. Other Comp. Income Non-Agency MBS	Accum. Other Comp. Gain (Loss) Derivatives	Accum. (Deficit)Series A Preferred Stock	Accum. (Deficit)Series B Preferred Stock	Accum. (Deficit)Series C Preferred Stock	Accum. (Deficit)	Series A Preferred Stock Shares Outstanding	Series C Preferred Stock Shares Outstanding	Series A Preferred Stock	Series B Preferred Stock	Series C Preferred Stock	Total
Beginning Balance at Dec. 31, 2017		$ 981	$ 980,243	$ 2,163	$ 30,201	$ (15,344)				$ (415,235)			$ 46,537		$ 48,420	$ 677,967
Beginning Balance (in shares) at Dec. 31, 2017	98,137										1,919	1,989
Issuance of Preferred Stock															524	524
Issuance of Preferred Stock (in shares)												21
Issuance of stock		1	365													366
Issuance of stock (in shares)	75
Other comprehensive income, fair value adjustments and reclassifications				(23,536)	709	746										(22,081)
Net (loss)										(2,853)						(2,853)
Amortization of restricted stock			24													24
Dividends on preferred stock							$ (1,035)	$ (305)	$ (958)				(1,035)	$ (305)	(958)	(2,297)
Dividend declared per common share										(14,732)						(14,732)
Ending Balance at Mar. 31, 2018		982	980,632	(21,373)	30,910	(14,598)				(435,118)			46,537		48,944	636,917
Ending Balance (in shares) at Mar. 31, 2018	98,212										1,919	2,010
Beginning Balance at Dec. 31, 2018		985	981,964	(28,824)	9,563	(11,531)				(485,988)			46,537		48,944	561,650
Beginning Balance (in shares) at Dec. 31, 2018	98,483										1,919	2,010
Issuance of stock		1	355													356
Issuance of stock (in shares)	82
Other comprehensive income, fair value adjustments and reclassifications				31,278	8,165	1,003										40,446
Net (loss)										(19,970)						(19,970)
Amortization of restricted stock			25													25
Dividends on preferred stock							$ (1,035)	$ (304)	$ (958)				(1,035)	$ (304)	(958)	(2,297)
Dividend declared per common share										(12,815)						(12,815)
Ending Balance at Mar. 31, 2019		$ 986	$ 982,344	$ 2,454	$ 17,728	$ (10,528)				$ (521,070)			$ 46,537		$ 48,944	$ 567,395
Ending Balance (in shares) at Mar. 31, 2019	98,565										1,919	2,010

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Dividend declared common share, per share	$ 0.13	$ 0.15
Series A Preferred Stock
Dividend declared, per preferred share	0.539063	0.539063
Series B Preferred Stock
Dividend declared, per preferred share	0.390625	0.390625
Series C Preferred Stock
Dividend declared, per preferred share	$ 0.476525	$ 0.476525

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Operating Activities:
Net (loss)	$ (19,970)	$ (2,853)
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation on rental properties	119	118
Realized loss on sales of MBS	6,147	11,987
Unrealized gain (loss) on Agency MBS held as trading investments	14,900	(8,900)
Impairment charge on residential mortgage loans held-for-investment		18
Amortization of restricted stock	25	25
Net settlements received (paid) on interest rate swaps, net of amortization	4,861	(596)
Unrealized loss (gain) on interest rate swaps, net	33,718	(25,394)
Loss (gain) on derivatives	27,289	(13,412)
Changes in assets and liabilities:
Decrease in reverse repurchase agreements	20,000
(Increase) decrease in interest receivable	(765)	27
(Increase) decrease in prepaid expenses and other	(4,546)	(5,753)
(Decrease) in accrued interest payable	(8,705)	(1,526)
Increase in accrued expenses	2,063	5,150
Net cash provided by operating activities	26,054	18,803
Investing Activities:
Proceeds from sales, MBS portfolios	903,822	589,073
Purchases, MBS portfolios	(997,367)	(672,090)
Principal payments, MBS portfolios	185,692	209,607
Purchases, Residential mortgage loans held-for-securitization	(18,028)
Principal payments, Residential mortgage loans held-for-securitization	802
Residential properties purchases	(195)	(54)
Net cash provided by investing activities	74,756	126,564
Financing Activities:
Borrowings from repurchase agreements	7,207,740	6,959,970
Repayments on repurchase agreements	(7,258,733)	(7,079,868)
Borrowings from warehouse line of credit	15,716
Net settlements on TBA Agency MBS Contracts	8,022	(14,848)
Derivative counterparty margin	5,238
Proceeds from common stock issued	356	366
Preferred stock dividends paid	(2,297)	(2,278)
Common stock dividends paid	(12,803)	(14,721)
Net cash (used in) provided by financing activities	(36,761)	(150,854)
Net increase (decrease) in cash and cash equivalents	64,049	(5,487)
Cash, cash equivalents and restricted cash at beginning of period	33,461	23,430	$ 23,430
Cash, cash equivalents and restricted cash at end of period	97,510	17,943	$ 33,461
Supplemental Disclosure of Cash Flow Information:
Cash paid for interest	31,612	21,662
Change in payable for MBS purchased	227,997
Change in payables for residential mortgage loans purchased	100,656
Residential mortgage loans
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Amortization of premium (discount)	(29)	(28)
Investing Activities:
Principal payments, Residential mortgage loans held-for-investment	30	28
Agency MBS
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Amortization of premium (discount)	5,886	7,601
Realized loss on sales of Agency MBS held as trading investments	7,363	7,327
Unrealized gain (loss) on Agency MBS held as trading investments	(14,906)	8,890
Investing Activities:
Proceeds from sales, MBS portfolios	903,800	583,200
Non-Agency MBS
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Amortization of premium (discount)	1,222	1,829
Investing Activities:
Proceeds from sales, MBS portfolios	20,000	5,800
Series C Preferred Stock
Financing Activities:
Proceeds on Series C Preferred Stock issued		525
TBA Agency MBS
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Loss (gain) on derivatives	$ (6,429)	$ 11,981

Organization and Significant Ac

Organization and Significant Accounting Policies	3 Months Ended
	Mar. 31, 2019
Organization and Significant Accounting Policies
Organization and Significant Accounting Policies	NOTE 1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES Our Company We were incorporated in Maryland on October 20, 1997 and commenced operations on March 17, 1998. Our principal business is to invest in, finance, and manage a leveraged portfolio of residential mortgage-backed securities, or MBS, and residential mortgage loans, which presently include the following types of investments: · Agency mortgage-backed securities , or Agency MBS, which include residential mortgage pass-through certificates and collateralized mortgage obligations, or CMOs, which are securities representing interests in pools of mortgage loans secured by residential property in which the principal and interest payments are guaranteed by a government-sponsored enterprise, or GSE, such as the Federal National Mortgage Association, or Fannie Mae, or the Federal Home Loan Mortgage Corporation, or Freddie Mac; · Non-agency mortgage-backed securities , or Non-Agency MBS, which are securities issued by companies that are not guaranteed by federally sponsored enterprises and that are secured primarily by first-lien residential mortgage loans; and · Residential mortgage loans . We acquire Non-QM residential mortgage loans (which are described further on page 47) from independent loan originators with the intent of holding these loans for securitization. These loans are financed by warehouse lines of credit until securitization. We also hold residential mortgage loans through consolidated securitization trusts. We finance these loans through asset-backed securities, or ABS, issued by the consolidated securitization trusts. The ABS, which are held by unaffiliated third parties, are non-recourse financing. The difference in the amount of the loans in the trusts and the amount of the ABS represents our retained net interest in the securitization trusts. Our principal business objective is to generate net income for distribution to our stockholders primarily based upon the spread between the interest income on our mortgage assets and our borrowing costs to finance our acquisition of those assets. We have elected to be taxed as a real estate investment trust, or REIT, under the Internal Revenue Code of 1986, as amended, or the Code. As long as we retain our REIT status, we generally will not be subject to federal or state income taxes to the extent that we distribute our taxable net income to our stockholders, and we routinely distribute to our stockholders substantially all of the taxable net income generated from our operations. In order to qualify as a REIT, we must meet various ongoing requirements under the tax law, including requirements relating to the composition of our assets, the nature of our gross income, minimum distribution requirements, and requirements relating to the ownership of our stock. Our Manager We are externally managed and advised by Anworth Management LLC, or our Manager. Effective as of December 31, 2011, we entered into a management agreement, or the Management Agreement, with our Manager, which effected the externalization of our management function, or the Externalization. Since the effective date of the Externalization, our day-to-day operations are being conducted by our Manager through the authority delegated to it under the Management Agreement and pursuant to the policies established by our board of directors, or our Board. Our Manager is supervised by our Board and is responsible for administering our day-to-day operations. In addition, our Manager is responsible for (i) the selection, purchase, and sale of our investment portfolio; (ii) our financing and hedging activities; and (iii) providing us with portfolio management, administrative, and other services and activities relating to our assets and operations as may be appropriate. Our Manager will also perform such other services and activities as described in the Management Agreement relating to our assets and operations as may be appropriate. In exchange for these services, our Manager receives a management fee, paid monthly in arrears, in an amount equal to one-twelfth of 1.20% of our Equity (as defined in the Management Agreement). BASIS OF PRESENTATION AND CONSOLIDATION The accompanying unaudited consolidated financial statements are prepared on the accrual basis of accounting in accordance with generally accepted accounting principles utilized in the United States of America, or GAAP. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Material estimates that are susceptible to change relate to the determination of the fair value of investments and derivatives, cash flow projections for and credit performance of Non-Agency MBS and residential mortgage loans, amortization of security and loan premiums, accretion of security and loan discounts, and accounting for derivative activities. Actual results could materially differ from these estimates. In the opinion of management, all material adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. Our consolidated financial statements include the accounts of all subsidiaries. Significant intercompany accounts and transactions have been eliminated. The interim financial information in the accompanying unaudited consolidated financial statements and the notes thereto should be read in conjunction with the audited consolidated financial statements included in our Annual Report on Form 10‑K for the fiscal year ended December 31, 2018. Our consolidated financial statements also include the consolidation of certain securitization trusts that meet the definition of a variable interest entity, or VIEs, because the Company has been deemed to be the primary beneficiary of the securitization trusts. These securitization trusts hold pools of residential mortgage loans and issue series of ABS payable from the cash flows generated by the underlying pools of residential mortgage loans. These securitizations are non-recourse financing for the residential mortgage loans held-for-investment. Generally, a portion of the ABS issued by the securitization trusts are sold to unaffiliated third parties and the balance is purchased by the Company. We classify the underlying residential mortgage loans owned by the securitization trusts as residential mortgage loans held-for-investment through consolidated securitization trusts in our consolidated balance sheets. The ABS issued to third parties are recorded as liabilities on the Company’s consolidated balance sheets. The Company records interest income on the residential mortgage loans held-for-investment and interest expense on the ABS issued to third parties in the Company’s consolidated statements of operations. The Company records the initial underlying assets and liabilities of the consolidated securitization trusts at their fair value upon consolidation into the Company and, as such, no gain or loss is recorded upon consolidation. See Note 5, “Variable Interest Entities,” for additional information regarding the impact of consolidation of securitization trusts. The consolidated securitization trusts are VIEs because the securitization trusts do not have equity that meets the definition of GAAP equity at risk. In determining if a securitization trust should be consolidated, the Company evaluates (in accordance with the Financial Accounting Standards Board, or FASB, Accounting Standards Codification, or ASC, 810‑10) whether it has both (i) the power to direct the activities of the securitization trust that most significantly impact its economic performance and (ii) the right to receive benefits from the securitization trust or the obligation to absorb losses of the securitization trust that could be significant. The Company determined that it is the primary beneficiary of certain securitization trusts because it has certain delinquency and default oversight rights on residential mortgage loans. In addition, the Company owns the most subordinated class of ABS issued by the securitization trusts and has the obligation to absorb losses and right to receive benefits from the securitization trusts that could potentially be significant to the securitization trusts. The Company assesses modifications, if any, to VIEs on an ongoing basis to determine if a significant reconsideration event has occurred that would change the Company’s initial consolidation assessment. Change in Basis of Presentation In accordance with ASU 2016-2, “Leases,” we have recorded on our unaudited consolidated balance sheets a “Right to Use Asset-Operating Lease,” and the related “Long-Term Lease Obligation.” All prior period information is presented in the same manner for conformity. The following is a summary of our significant accounting policies: Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid investments with original maturities of three months or less. The carrying amount of cash equivalents approximates their fair value. Restricted cash includes cash pledged as collateral to counterparties on various derivative transactions. Reverse Repurchase Agreements We use securities purchased under agreements to resell, or reverse repurchase agreements, as a means of investing excess cash. Although legally structured as a purchase and subsequent resale, reverse repurchase agreements are treated as financing transactions under which the counterparty pledges securities (principally U.S. treasury securities) and accrued interest as collateral to secure a loan. The difference between the purchase price that we pay and the resale price that we receive represents interest paid to us and is included in “Other interest income” on our consolidated statements of operations. It is our policy to generally take possession of securities purchased under reverse repurchase agreements at the time such agreements are made. Mortgage-Backed Securities Agency MBS are securities that are obligations (including principal and interest) guaranteed by the U.S. government, such as Ginnie Mae, or guaranteed by federally sponsored enterprises, such as Fannie Mae or Freddie Mac. Our investment-grade Agency MBS portfolio is invested primarily in fixed-rate and adjustable-rate mortgage-backed pass-through certificates and hybrid adjustable-rate MBS. Hybrid adjustable-rate MBS have an initial interest rate that is fixed for a certain period, typically one to ten years, and then adjusts annually for the remainder of the term of the asset. We structure our investment portfolio to be diversified with a variety of prepayment characteristics, investing in mortgage assets with prepayment penalties, investing in certain mortgage security structures that have prepayment protections and purchasing mortgage assets at a premium and at a discount. A portion of our portfolio consists of Non-Agency MBS. Our principal business objective is to generate net income for distribution to our stockholders primarily based upon the spread between the interest income on our mortgage assets and our borrowing costs to finance our acquisition of those assets. We classify our MBS as either trading investments, available-for-sale investments, or held-to-maturity investments. Our management determines the appropriate classification of the securities at the time they are acquired and evaluates the appropriateness of such classifications at each balance sheet date. We currently classify most of our MBS as available-for-sale. We have also designated a portion of our MBS as trading investments. All assets that are classified as available-for-sale are carried at fair value and unrealized gains or losses are generally included in “Accumulated other comprehensive income (loss)” as a component of stockholders’ equity. Losses that are credit-related on securities classified as available-for-sale, which are determined by management to be other-than-temporary in nature, are reclassified from “Other comprehensive income (loss)” on our consolidated balance sheets to income (loss) on our consolidated statements of operations. Assets classified as trading investments are reported at fair value with unrealized gains and losses included in our consolidated statements of operations. The most significant source of our revenue is derived from our investments in MBS. Interest income on Agency MBS is accrued based on the actual coupon rate and the outstanding principal amount of the underlying mortgages. Premiums and discounts are amortized or accreted into interest income over the estimated lives of the securities using the effective interest yield method, adjusted for the effects of actual and estimated prepayments based on ASC 320‑10. Our policy for estimating prepayment speeds for calculating the effective yield is to evaluate historical performance, street consensus prepayment speeds, and current market conditions. If our estimate of prepayments is materially incorrect as compared to the aforementioned references, we may be required to make an adjustment to the amortization or accretion of premiums and discounts that would have an impact on future income, which could be material and adverse. A majority of our Non-Agency MBS are accounted for under “Loans and Debt Securities Acquired with Credit Deterioration” (ASC 310‑30). A debt security accounted for under ASC 310‑30 is initially recorded at its purchase price (fair value). The amount of expected cash flows that exceed the initial investment represents the market yield adjustment (accretable yield), which is recognized as interest income on a level yield basis over the life of the security. The excess of total contractual cash flows over the cash flows expected at its origination is considered to be the non-accretable difference. We must periodically reassess the expected cash flows of loans accounted for under ASC 310‑30 along with the cash flows received. A significant increase in expected cash flows must be accounted for as an increase in the rate of accretion over the remaining life of the security. Conversely, if expected cash flows decrease, an other-than-temporary impairment must be recognized as a charge to earnings. Adjustments to the fair value of Non-Agency MBS, which are accounted for as available-for-sale securities, are recorded in “Accumulated other comprehensive income,” or AOCI. The determination as to whether impairment and accretable yield exists is based on cash flow projections related to the securities. As a result, the timing and amount of impairment and accretable yield constitutes a material estimate that is susceptible to significant change. Interest income on the Non-Agency MBS that were purchased at a discount to par value, and were rated below AA at the time of purchase, is recognized based on the security’s effective interest rate. The effective interest rate on these securities is based on the projected cash flows from each security, which are estimated based on our observation of current information and events, and include assumptions related to interest rates, prepayment rates, and the timing and amount of credit losses. On at least a quarterly basis, we review and, if appropriate, make adjustments to our cash flow projections based on input and analysis received from external sources, internal models, and our judgment about interest rates, prepayment rates, the timing and amount of credit losses, and other factors. Changes in cash flows from those originally projected, or from those estimated at the last evaluation, may result in a prospective change in the yield/interest income recognized on such securities. Actual maturities of the available-for-sale securities are affected by the contractual lives of the associated mortgage collateral, periodic payments of principal, and prepayments of principal. Therefore, actual maturities of available-for-sale securities are generally shorter than stated contractual maturities. Stated contractual maturities are generally greater than ten years. There can be no assurance that our assumptions used to estimate future cash flows or the current period’s yield for each asset would not change in the near term, and the change could be material. Based on the projected cash flows from our Non-Agency MBS purchased at a discount to par value, a portion of the purchase discount may be designated as a non-accretable difference and, therefore, not accreted into interest income. The amount designated as a non-accretable difference may be adjusted over time, based on the actual performance of the security, its underlying collateral, actual and projected cash flow from such collateral, economic conditions, and other factors. If the performance of a security with a non-accretable difference is more favorable than forecasted, a portion of the amount designated as a non-accretable difference may be accreted into interest income prospectively. Conversely, if the performance of a security with a non-accretable difference is less favorable than forecasted, an impairment charge and write-down of such security to a new cost basis results. Securities transactions are recorded on the date the securities are purchased or sold. Realized gains or losses from securities transactions are determined based on the specific identified cost of the securities. Residential Mortgage Loans Held-for-Securitization Residential mortgage loans held-for-securitization are held at our wholly-owned subsidiary, Anworth Mortgage Loans, Inc., in connection with our intent to sponsor our own securitizations. Loans purchased with the intent to securitize are recorded on the trade date. Any fees associated with acquiring the loans held-for-securitization, as well as any premium paid to acquire the loans, are deferred. These are included in the loan balance and amortized using the effective interest yield method. Interest income is recorded as revenue when earned and deemed collectible or until a loan becomes more than 90 days past due, at which point the loan is placed on non-accrual status. When a non-accrual loan has been cured, meaning when all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternatively, nonaccrual loans may be placed back on accrual status after the loan is considered re-performing, generally when the loan has been current for 6 months. The residential mortgage loans held-for-securitization are financed by a warehouse line of credit. The payment and performance of the obligations by Anworth Mortgage Loans under the warehouse line is guaranteed by Anworth Mortgage Asset Corporation. We may be required to remove a loan from a warehouse line of credit. We do not maintain a loan repurchase reserve, as any risk of loss due to loan repurchase would normally be covered by recourse to the companies from which we acquired the loans. Debt issuances costs incurred in connection with this line of credit (such as facility fees and legal costs) are deducted from the debt’s carrying amount and amortized ratably to interest expense over the term of the debt. Residential Mortgage Loans Held-for-Investment Through Consolidated Securitization Trusts Residential mortgage loans held-for-investment through consolidated securitization trusts are carried at unpaid principal balances net of any premiums or discounts and allowance for loan losses. We expect that we will be required to continue to consolidate the securitization trusts that hold the residential mortgage loans. We establish an allowance for residential loan losses based on our estimate of credit losses. These estimates for the allowance for loan losses require consideration of various observable inputs including, but not limited to, historical loss experience, delinquency status, borrower credit scores, geographic concentrations and loan-to-value ratios, and are adjusted for current economic conditions as deemed necessary by our management. Many of these factors are subjective and cannot be reduced to a mathematical formula. In addition, since we have not incurred any significant direct losses on our portfolio, we review national historical credit performance information from external sources to assist in our analysis. Changes in our estimates can significantly impact the allowance for loan losses and provision expense. The allowance reflects management’s best estimate of the credit losses inherent in the loan portfolio at the balance sheet date. It is also possible that we will experience credit losses that are different from our current estimates or that the timing of those losses may differ from our estimates. We recognize interest income from residential mortgage loans on an accrual basis. Any related premium or discount is amortized into interest income using the effective interest method over the estimated life of these loans. Coupon interest is recognized as revenue when earned and deemed collectable or until a loan becomes more than 90 days past due, at which point the loan is placed on non-accrual status. Interest previously accrued for loans that have been placed on non-accrual status is reversed against interest income in the period the loan is placed in non-accrual status. Residential loans delinquent more than 90 days or in foreclosure are characterized as delinquent. Cash principal and interest that are advanced from servicers after a loan becomes greater than 90 days past due are recorded as a liability due to the servicer. When a delinquent loan previously placed on non-accrual status has been cured, meaning when all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternatively, non-accrual loans may be placed back on accrual status after the loan is considered re-performing. A restructured loan is considered re-performing when the loan has been current for at least 6 months. Residential Properties Residential properties are stated at cost and consist of land, buildings, and improvements, including other costs incurred during their acquisition, possession, and renovation. Residential properties purchased that are not subject to an existing lease are treated as asset acquisitions and, as such, are recorded at their purchase price, including acquisition and renovation costs, all of which are allocated to land and building based upon their relative fair values at the date of acquisition. Building depreciation is computed on a straight-line basis over the estimated useful lives of the assets. We generally use a 27.5 year estimated life with no salvage value. We incur costs to prepare our acquired properties to be leased. These costs are capitalized and allocated to building costs. Costs related to the restoration, renovation, or improvement of our properties that improve and extend their useful lives are capitalized and depreciated over their estimated useful lives. Expenditures for ordinary repairs and maintenance are expensed as incurred. Costs incurred by us to lease the properties are capitalized and amortized over the life of the lease. Escrow deposits include refundable and non-refundable cash and earnest money on deposit with independent third parties for property purchases. Repurchase Agreements We finance the acquisition of MBS primarily through the use of repurchase agreements. Under these repurchase agreements, we sell securities to a lender and agree to repurchase the same securities in the future for a price that is higher than the original sales price. The difference between the sale price that we receive and the repurchase price that we pay represents interest paid to the lender. Although structured as a sale and repurchase obligation, a repurchase agreement operates as a financing under which we pledge our securities and accrued interest as collateral to secure a loan which is equal in value to a specified percentage of the estimated fair value of the pledged collateral. We retain beneficial ownership of the pledged collateral. Upon the maturity of a repurchase agreement, we are required to repay the loan and concurrently receive back our pledged collateral from the lender or, with the consent of the lender, we may renew such agreement at the then-prevailing financing rate. These repurchase agreements may require us to pledge additional assets to the lender in the event the estimated fair value of the existing pledged collateral declines. Asset-Backed Securities Issued by Securitization Trusts Asset-backed securities issued by the securitization trusts are recorded at principal balances net of unamortized premiums or discounts. This long-term debt is collateralized only by the assets held in the trusts and is otherwise non-recourse to the Company. Derivative Financial Instruments Risk Management We primarily use short-term (less than or equal to 12 months) repurchase agreements to finance the purchase of MBS. These obligations expose us to variability in interest payments due to changes in interest rates. We continuously monitor changes in interest rate exposures and evaluate various opportunities to mitigate this risk. Our objective is to limit the impact of interest rate changes on our earnings and cash flows. The principal instruments we use to achieve this are interest rate swap agreements, or interest rate swaps, which effectively convert a percentage of our repurchase agreements to fixed-rate obligations over a period of up to ten years. Under interest rate swaps, we agree to pay an amount equal to a specified fixed rate of interest times a notional principal amount and we receive in return an amount equal to a specified variable-rate of interest times a notional amount, generally based on the London Interbank Offered Rate, or LIBOR. The notional amounts are not exchanged. We do not issue or hold the interest rate swaps for speculative purposes. We also enter into To-Be-Announced, or TBA, Agency MBS as either a means of investing in and financing Agency MBS or as a means of disposing of or reducing our exposure to agency securities. Pursuant to TBA contracts, we agree to purchase or sell for future delivery Agency MBS with certain principal and interest terms and certain types of collateral, but the particular Agency MBS to be delivered are not identified until shortly before the TBA settlement date. We also may choose, prior to settlement, to move the settlement of these MBS out to a later date by entering into an offsetting short or long position (referred to as a “pair off”), net settling the paired off positions for cash and simultaneously purchasing a similar TBA contract for a later settlement date. This transaction is commonly referred to as a “dollar roll.” The Agency MBS purchased or sold for a forward settlement date are typically priced at a discount to agency securities for settlement in the current month. This difference (or discount) is referred to as the “price drop.” The price drop represents compensation to us for foregoing net interest margin (interest income less repurchase agreement financing cost). TBA Agency MBS are accounted for as derivative instruments since they do not meet the exemption allowed for a “regular way” security trade under ASC 815, as either the TBA contracts do not settle in the shortest period of time possible or we cannot assess that it is probable at inception that we will take physical delivery of the security or that we will not settle on a net basis. Accounting for Derivative and Hedging Activities We account for derivative instruments in accordance with ASC 815, which requires recognition of all derivatives as either assets or liabilities and measurement of those instruments at fair value, which is typically based on values obtained from large financial institutions who are market makers for these types of instruments. The accounting for changes in the fair value of derivative instruments depends on whether the instruments are designated and qualify as hedges in accordance with ASC 815. Changes in fair value related to derivatives not designated as hedges are recorded in our consolidated statements of operations as “Gain (loss) on derivatives” and specifically identified as either relating to interest rate swaps or TBA Agency MBS. For a derivative to qualify for hedge accounting, we must anticipate that the hedge will be highly “effective” as defined by ASC 815‑10. A hedge of the variability of cash flows that are to be received or paid in connection with a recognized asset or liability is known as a “cash flow” hedge. Changes in the fair value of a derivative that is highly effective and that is designated as a cash flow hedge, to the extent the hedge is effective, are recorded in AOCI and reclassified to income when the forecasted transaction affects income (e.g. when periodic settlement interest payments are due on repurchase agreements). Hedge ineffectiveness, if any, is recorded in current period income. Fair value hedges protect against exposures to changes in the fair value of a recognized asset. ASC 815 requires companies to recognize in income, in the period that the changes in fair value occur, any gains or losses from any ineffectiveness in the hedging relationship. When we discontinue hedge accounting, the gain or loss on the derivative remains in AOCI and is reclassified into income when the forecasted transaction affects income. In all situations where hedge accounting is discontinued and the derivative remains outstanding, we carry the derivative at its fair value on our consolidated balance sheets, recognizing changes in fair value in current period income. All of our interest rate swaps had historically been accounted for as cash flow hedges under ASC 815. After August 22, 2014, none of our interest rate swaps were designated for hedge accounting. As a result of discontinuing hedge accounting for our interest rate swaps, changes in the fair value of these interest rate swaps are recorded in “(Loss) gain on derivatives, net” in our consolidated statements of operations rather than in AOCI. Also, net interest paid or received on these interest rate swaps, which was previously recognized in interest expense, is instead recognized in “(Loss) gain on derivatives, net.” These continue to be reported as assets or liabilities on our consolidated balance sheets at their fair value. As long as the forecasted transactions that were being hedged (i.e. rollovers of our repurchase agreement borrowings) are still expected to occur, the balance in AOCI from the activity in these interest rate swaps through the dates of de-designation will remain in AOCI and be recognized in our consolidated statements of operations as “interest expense” over the remaining term of these interest rate swaps. For purposes of the consolidated statements of cash flows, cash flows hedges were classified with the cash flows from the hedged item. Cash flows from derivatives that are not hedges are classified according to the underlying nature or purpose of the derivative transaction. For more details on the amounts and other qualitative information on all our derivative transactions, see Note 15, “Derivative Instruments.” For more information on the fair value of our derivative instruments, see Note 9, “Fair Values of Financial Instruments.” Credit Risk As of March 31, 2019, we had attempted to limit our exposure to credit losses on our Agency MBS by purchasing securities primarily through Freddie Mac and Fannie Mae. The payment of principal and interest on MBS issued by Freddie Mac and Fannie Mae MBS are guaranteed by those respective enterprises. In September 2008, both Freddie Mac and Fannie Mae were placed in the conservatorship of the U.S. government. While it is the intent that the conservatorship will help stabilize Freddie Mac’s and Fannie Mae’s overall financial position, there can be no assurance that it will succeed or that, if necessary, Freddie Mac and Fannie Mae will be able to satisfy their guarantees of Agency MBS. There have also been concerns as to what the U.S. government will do regarding winding-down the operations of Freddie Mac and Fannie Mae. There have also been concerns over the past several years regarding the credit standing of Freddie Mac, Fannie Mae, and U.S. sovereign debt. We do not know what effect any future ratings of Freddie Mac, Fannie Mae, and U.S. sovereign debt may ultimately have on the U.S. economy, the value of our securities, or the ability of Freddie Mac and Fannie M

Restricted Cash

Restricted Cash	3 Months Ended
	Mar. 31, 2019
Restricted Cash
Restricted Cash	NOTE 2. RESTRICTED CASH This includes cash pledged as collateral for interest rate swaps and TBA Agency MBS. The following represents the Company’s restricted cash balances at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (in thousands) Restricted cash - interest rate swaps and TBA Agency MBS margin calls $ 75,513 $ 30,296

Mortgage Backed Securities

Mortgage Backed Securities	3 Months Ended
	Mar. 31, 2019
Mortgage Backed Securities
Mortgage Backed Securities	NOTE 3. MORTGAGE-BACKED SECURITIES The following tables summarize our Agency MBS and Non-Agency MBS at March 31, 2019 and December 31, 2018, which are carried at their fair value: March 31, 2019 Total Non-Agency Total By Agency Freddie Mac Fannie Mae Agency MBS (1) MBS MBS (in thousands) Amortized cost $ 1,742,468 $ 1,990,254 $ 3,732,722 $ 750,869 $ 4,483,591 Paydowns receivable (2) 10,503 — 10,503 — 10,503 Unrealized gains 10,641 13,935 24,576 26,412 50,988 Unrealized losses (11,413) (11,297) (22,710) (8,684) (31,394) Fair value $ 1,752,199 $ 1,992,892 $ 3,745,091 $ 768,597 $ 4,513,688 15-Year 20-Year 30-Year Total Non-Agency Total By Security Type ARMs Hybrids Fixed-Rate (1) Fixed-Rate (1) Fixed-Rate (1) Agency MBS MBS MBS (in thousands) Amortized cost $ 784,033 $ 630,863 $ 351,074 $ 364,943 $ 1,601,809 $ 3,732,722 $ 750,869 $ 4,483,591 Paydowns receivable (2) 4,802 5,701 — — — 10,503 — 10,503 Unrealized gains 10,902 417 650 281 12,326 24,576 26,412 50,988 Unrealized losses (1,074) (11,149) (3,300) (4,074) (3,113) (22,710) (8,684) (31,394) Fair value $ 798,663 $ 625,832 $ 348,424 $ 361,150 $ 1,611,022 $ 3,745,091 $ 768,597 $ 4,513,688 (1) Included in the fixed-rate MBS are Trading Agency MBS. These have an amortized cost of $446.4 million, an unrealized loss of $1.0 million, and a fair value of $445.4 million. (2) Paydowns receivable on Agency MBS are generated when the Company receives notice from Freddie Mac of prepayments but does not receive the actual cash with respect to such prepayments until the 15th day of the following month. During the three months ended March 31, 2019, we sold approximately $903.8 million of Agency MBS and realized gross losses of approximately $8.8 million and a gross gain of approximately $2.6 million. During the three months ended March 31, 2018, we sold approximately $583.2 million of Agency MBS and realized gross losses of approximately $19.3 million. During the three months ended March 31, 2019, Non-Agency bonds of approximately $20 million were called, and we realized a gross gain of approximately $22 thousand. During the three months ended March 31, 2018, we sold approximately $5.8 million of Non-Agency MBS and recognized gross losses of approximately $42 thousand. During the three months ended March 31, 2019, we had unrealized gains on trading investments of $14.9 million. During the three months ended March 31, 2018, we had gross unrealized losses on trading investments of approximately $8.9 million. December 31, 2018 Total Non-Agency Total By Agency Freddie Mac Fannie Mae Agency MBS (1) MBS MBS (in thousands) Amortized cost $ 1,457,552 $ 2,127,655 $ 3,585,207 $ 785,640 $ 4,370,847 Paydowns receivable (2) 7,831 — 7,831 — 7,831 Unrealized gains 4,169 10,827 14,996 20,753 35,749 Unrealized losses (25,155) (34,160) (59,315) (11,190) (70,505) Fair value $ 1,444,397 $ 2,104,322 $ 3,548,719 $ 795,203 $ 4,343,922 Total 15-Year 20-Year 30-Year Agency Non-Agency Total By Security Type ARMs Hybrids Fixed-Rate (1) Fixed-Rate Fixed-Rate MBS MBS MBS (in thousands) Amortized cost $ 854,733 $ 689,694 $ 917,780 $ 374,792 $ 748,208 $ 3,585,207 $ 785,640 $ 4,370,847 Paydowns receivable (2) 4,065 3,766 — — — 7,831 — 7,831 Unrealized gains 11,920 263 60 — 2,753 14,996 20,753 35,749 Unrealized losses (1,250) (15,786) (25,389) (8,290) (8,600) (59,315) (11,190) (70,505) Fair value $ 869,468 $ 677,937 $ 892,451 $ 366,502 $ 742,361 $ 3,548,719 $ 795,203 $ 4,343,922 (1) Included in the 15-year fixed-rate MBS are Trading Agency MBS. These have an amortized cost of $496.7 million, an unrealized loss of $15.9 million, and a fair value of $480.8 million. (2) Paydowns receivable on Agency MBS are generated when the Company receives notice from Freddie Mac of prepayments but does not receive the actual cash with respect to such prepayments until the 15th day of the following month. The following table presents information regarding the estimates of the contractually required principal payments, cash flows expected to be collected, and estimated fair value, of the Non-Agency MBS held at carrying value acquired by the Company for the three months ended March 31, 2019 and cumulatively at March 31, 2019 and December 31, 2018: Change During the Three Months Ended At At March 31, March 31, December 31, 2019 2019 2018 (in thousands) Non-Agency MBS acquired with credit deterioration: Contractually required principal $ (18,836) $ 801,772 $ 820,608 Contractual principal not expected to be collected (non-accretable yield) 5,273 (327,613) (332,886) Expected cash flows to be collected (13,563) 474,159 487,722 Market yield adjustment (1,669) 135,568 137,237 Unrealized gain, net 6,648 17,076 10,428 Fair value (8,584) 626,803 635,387 Fair value of other Non-Agency MBS (without credit deterioration) (18,022) 141,794 159,816 Total fair value of Non-Agency MBS $ (26,606) $ 768,597 $ 795,203 The following table presents the change for the three months ended March 31, 2019 of the components of the Company’s purchase discount on the Non-Agency MBS acquired with credit deterioration between the amount designated as the market yield adjustment and the non-accretable difference: Three Months Ended March 31, 2019 Market Yield Non- Adjustment Accretable (in thousands) Balance at beginning of period $ 137,237 $ (332,886) Accretion of discount (1,669) — Purchases — — Realized credit losses — 5,273 Sales — — Impairment charge — — Transfer — — Other — — Balance at end of period $ 135,568 $ (327,613) The following tables show the gross unrealized losses and fair value of those individual securities in our available-for-sale MBS portfolio that are in a continuous unrealized loss position at March 31, 2019 and December 31, 2018, aggregated by investment category and length of time: March 31, 2019 Less Than 12 Months 12 Months or More Total Description Number Number Number of of Fair Unrealized of Fair Unrealized of Fair Unrealized Securities Securities Value Losses Securities Value Losses Securities Value Losses (in thousands) (in thousands) (in thousands) Agency MBS 15 $ 190,147 $ (526) 148 $ 1,156,763 $ (19,843) 163 $ 1,346,910 $ (20,369) Non-Agency MBS 36 $ 204,872 $ (3,523) 13 $ 73,560 $ (5,161) 49 $ 278,432 $ (8,684) December 31, 2018 Less Than 12 Months 12 Months or More Total Description Number Number Number of of Fair Unrealized of Fair Unrealized of Fair Unrealized Securities Securities Value Losses Securities Value Losses Securities Value Losses (in thousands) (in thousands) (in thousands) Agency MBS 47 $ 859,060 $ (6,484) 166 $ 1,301,348 $ (36,937) 213 $ 2,160,408 $ (43,421) Non-Agency MBS 56 $ 329,108 $ (5,886) 12 $ 72,514 $ (5,304) 68 $ 401,622 $ (11,190) We do not consider those available-for-sale Agency MBS, or AFS MBS, that have been in a continuous loss position for 12 months or more to be other-than-temporarily impaired. The unrealized losses on our investments in AFS MBS were caused by fluctuations in interest rates. We purchased the AFS MBS primarily at a premium relative to their face value and the contractual cash flows of those investments are guaranteed by the GSEs. Since September 2008, the GSEs have been in the conservatorship of the U.S. government. At March 31, 2019, we did not expect to sell the AFS MBS at a price less than the amortized cost basis of our investments. Because the decline in market value of the AFS MBS is attributable to changes in interest rates and not the credit quality of the AFS MBS in our portfolio, and because we did not have the intent to sell these investments nor is it more likely than not that we will be required to sell these investments before recovery of their amortized cost basis, which may be at maturity, we do not consider these investments to be other-than-temporarily impaired at March 31, 2019. At March 31, 2019, there was an aggregate of approximately $1.0 million in unrealized losses on Trading Agency MBS that was not included in the table above, as this is recognized on our consolidated statements of operations. At December 31, 2018, there was an aggregate of approximately $15.9 million in unrealized losses on Trading Agency MBS that was not included in the table above, as they were previously recognized on our consolidated statements of operations. The unrealized losses on our investments in Non-Agency MBS were primarily caused by fluctuations in interest rates. We purchased the Non-Agency MBS primarily at a discount relative to their face value. During the three months ended March 31, 2019, no bonds were impaired. At March 31, 2019, we did not expect to sell these Non-Agency MBS at a price less than the amortized cost basis of our investments. Because the decline in market value of these Non-Agency MBS is attributable to changes in interest rates and not the credit quality of these Non-Agency MBS in our portfolio, and because we did not have the intent to sell these investments nor is it more likely than not that we will be required to sell these investments before recovery of their amortized cost basis, which may be at maturity, we do not consider these investments to be other-than-temporarily impaired at March 31, 2019.

Residential Mortgage Loans Held

Residential Mortgage Loans Held-For-Securitization	3 Months Ended
	Mar. 31, 2019
Residential Mortgage Loans Held-For-Securitization
Residential Mortgage Loans Held-For-Securitization	NOTE 4. RESIDENTIAL MORTGAGE LOANS HELD-FOR-SECURITIZATION At March 31, 2019, we owned approximately $129.6 million of Non-QM residential mortgage loans held-for-securitization. At December 31, 2018, we owned approximately $11.7 of residential mortgage loans held-for-securitization. The following table details the carrying value for residential mortgage loans held-for-securitization at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (in thousands) Principal balance $ 126,189 $ 11,281 Unamortized premium and costs, net of discount 3,394 379 Carrying value $ 129,583 $ 11,660 The following table provides a reconciliation of the carrying value of residential mortgage loans held-for-securitization at March 31, 2019 and for the year ended December 31, 2018: For the Year March 31, December 31, 2019 2018 (in thousands) Balance at beginning of period $ 11,660 $ — Loan acquisitions 118,765 11,660 Deductions during period: Collections of principal (816) — Amortization of premium (26) — Balance at end of period $ 129,583 $ 11,660 The following table details various portfolio characteristics of the residential mortgage loans held-for-securitization at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (dollar amounts in thousands) Portfolio Characteristics: 12-months bank statements 5 2 24-months bank statements 21 17 Alt documentation 235 — Full documentation 5 2 Paid in full — 1 Number of loans 266 22 Current principal balance $ 126,189 $ 11,281 Average loan balance $ 474 $ 513 Net weighted average coupon rate 5.56 % 5.95 % Weighted average FICO score 745 722 Weighted average LTV (loan-to-value) 69 77 Weighted average DTI (debt-to-income) 39 40 Performance: Current 126,189 11,281 Total $ 126,189 $ 11,281 The following table summarizes the geographic concentrations of residential mortgage loans held-for-securitization at March 31, 2019 and December 31, 2018 based on principal balance outstanding: March 31, December 31, State 2019 2018 California 81 % 49 % Florida 6 43 Texas 3 5 Other states (none greater than 5%) 10 3 Total 100 % 100 %

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2019
Variable Interest Entities
Variable Interest Entities	NOTE 5. VARIABLE INTEREST ENTITIES As discussed in Note 1, “Summary of Significant Accounting Policies,” we have determined that we are the primary beneficiary of certain securitization trusts. The following table presents a summary of the assets and liabilities of our consolidated securitization trusts as of March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (in thousands) Residential mortgage loans held-for-investment through consolidated securitization trusts $ 535,077 $ 549,016 Accrued interest receivable 1,752 1,792 Total assets $ 536,829 $ 550,808 Accrued interest payable $ 1,707 $ 1,746 Asset-backed securities issued by securitization trusts 525,712 539,651 Total liabilities $ 527,419 $ 541,397 Our risk with respect to each investment in a securitization trust is limited to our direct ownership in the securitization trust. We own the most subordinated classes on all of the trusts. The residential mortgage loans held by the consolidated securitization trusts are held solely to satisfy the liabilities of the securitization trusts, and the investors in the securitization trusts have no recourse to the general credit of the Company for the ABS issued by the securitization trusts. The assets of a consolidated securitization trust can only be used to satisfy the obligations of that trust. ABS are not paid down according to any schedule but rather as payments are made on the underlying mortgages. The final distribution dates for the three trusts are all at various dates in 2045. We are not contractually required and have not provided any additional financial support to the securitization trusts for the period ended March 31, 2019. Residential Mortgage Loans Held-for-Investment Through Consolidated Securitization Trusts Residential mortgage loans held-for-investment through consolidated securitization trusts are carried at unpaid principal balances net of any premiums or discounts and allowances for loan losses. The residential mortgage loans are secured by first liens on the underlying residential properties. As we still retain the most subordinated tranches in these trusts, we continue to be the primary beneficiary of these trusts and believe that we are still required to consolidate these trusts. During the three months ended March 31, 2019, we did not sell any of our investment in these trusts. During the year ended December 31, 2018, we did not sell any of our investment in these trusts. The following table details the carrying value for residential mortgage loans held-for-investment through consolidated securitization trusts at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (in thousands) Principal balance $ 532,361 $ 545,881 Unamortized premium, net of discount 2,891 3,321 Allowance for loan losses (175) (186) Carrying value $ 535,077 $ 549,016 The following table provides a reconciliation of the carrying value of residential mortgage loans held-for-investment through consolidated securitization trusts for the three months ended March 31, 2019 and March 31, 2018 and for the year ended December 31, 2018: Three Months Three Months For the Year Ended Ended Ended March 31, March 31, December 31, 2019 2018 2018 (in thousands) Balance at beginning of period $ 549,016 $ 639,351 $ 639,351 Loan acquisitions — — — Deductions during period: Collections of principal (13,520) (27,813) (88,338) Amortization of premium (430) (549) (2,014) Charge-offs, net 11 17 17 Balance at end of period $ 535,077 $ 611,006 $ 549,016 The following table details various portfolio characteristics of the residential mortgage loans held-for-investment through consolidated securitization trusts at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (dollar amounts in thousands) Portfolio Characteristics: Number of loans 817 829 Current principal balance $ 532,361 $ 545,881 Average loan balance $ 652 $ 658 Net weighted average coupon rate 3.86 % 3.85 % Weighted average maturity (years) 25.0 25.3 Weighted average FICO score 761 761 Current Performance: Current $ 529,256 $ 543,328 30 days delinquent 1,169 — 60 days delinquent 891 896 90+ days delinquent 454 1,066 Bankruptcy/foreclosure 591 591 Total $ 532,361 $ 545,881 The following table summarizes the geographic concentrations of residential mortgage loans held-for-investment through consolidated securitization trusts at March 31, 2019 and December 31, 2018 based on principal balance outstanding: March 31, December 31, State 2019 2018 California 43 % 43 % Florida 7 7 Other states (none greater than 5%) 50 50 Total 100 % 100 % Allowance for Loan Losses on Residential Mortgage Loans Held by Consolidated Securitization Trusts As discussed in Note 1, “Summary of Significant Accounting Policies,” the Company establishes and maintains an allowance for loan losses on residential mortgage loans held by consolidated securitization trusts based on the Company’s estimate of credit losses. The following table summarizes the activity in the allowance for loan losses for the three months ended March 31, 2019 and March 31, 2018 and for the year ended December 31, 2018: Three Months Three Months For the Year Ended Ended Ended March 31, March 31, December 31, 2019 2018 2018 (in thousands) Balance at beginning of period $ 186 $ 203 $ 203 Provision for loan losses — — — Charge-offs, net (11) (17) (17) Balance at end of period $ 175 $ 186 $ 186 Asset-Backed Securities Issued by Securitization Trusts Asset-backed securities issued by securitization trusts are recorded at principal balances net of unamortized premiums and discounts. Asset-backed securities issued by securitization trusts are issued in various tranches and had a principal balance of $525.7 million at March 31, 2019 and $539.7 million at December 31, 2018. The investors in the asset-backed securities are not affiliated with the Company and have no recourse to the general credit of the Company.

Residential Properties

Residential Properties	3 Months Ended
	Mar. 31, 2019
Residential Properties
Residential Properties	NOTE 6. RESIDENTIAL PROPERTIES At March 31, 2019, we owned 86 single-family residential properties which are all located in Southeastern Florida and are carried at a total cost, net of accumulated depreciation, of approximately $13.8 million. At December 31, 2018, we owned 86 properties at a net cost of approximately $13.8 million. The income from these properties is included in our consolidated statements of operations as “Income on rental properties.” The expenses on these properties are included in our consolidated statements of operations in “Rental properties depreciation and expenses.” In accordance with ASU 2016-2, “Leases,” we have elected not to capitalize the leases on these properties on our unaudited consolidated balance sheets, as they are all less than 12 months.

Short-Term Debt

Short-Term Debt	3 Months Ended
	Mar. 31, 2019
Repurchase Agreements
Short-Term Debt	NOTE 7. SHORT-TERM DEBT We have entered into repurchase agreements and a warehouse line of credit with large financial institutions. The repurchase agreements that we use to finance most of our MBS are short-term borrowings that are secured by the market value of our MBS and bear fixed interest rates that have historically been based upon LIBOR. Warehouse lines of credit are short-term borrowings (generally less than 1 year) that are used to finance the residential mortgage loans that are held-for-securitization. Repurchase Agreements At March 31, 2019 and December 31, 2018, the repurchase agreements had the following balances, weighted average interest rates, and remaining weighted average maturities: March 31, 2019 Agency MBS Non-Agency MBS Total MBS Weighted Weighted Weighted Average Average Average Interest Interest Interest Balance Rate Balance Rate Balance Rate (in thousands) (in thousands) (in thousands) Overnight $ 15,000 2.50 % $ — — % $ 15,000 2.50 % Less than 30 days 1,800,000 2.69 545,634 3.60 2,345,634 2.91 30 days to 90 days 1,400,000 2.66 — — 1,400,000 2.66 Over 90 days — — — — — — Demand — — — — — — $ 3,215,000 2.68 % $ 545,634 3.60 % $ 3,760,634 2.81 % Weighted average maturity 33 days 18 days 31 days Weighted average interest rate after adjusting for interest rate swaps 2.32 % Weighted average maturity after adjusting for interest rate swaps 1,222 days MBS pledged as collateral under the repurchase agreements and interest rate swaps $ 3,421,455 $ 700,391 $ 4,121,846 December 31, 2018 Agency MBS Non-Agency MBS Total MBS Weighted Weighted Weighted Average Average Average Interest Interest Interest Balance Rate Balance Rate Balance Rate (in thousands) (in thousands) (in thousands) Overnight $ — — % $ — — % $ — — % Less than 30 days 1,510,000 2.46 576,627 3.55 2,086,627 2.76 30 days to 90 days 1,725,000 2.57 — — 1,725,000 2.57 Over 90 days — — — — — — Demand — — — — — — $ 3,235,000 2.52 % $ 576,627 3.55 % $ 3,811,627 2.67 % Weighted average maturity 35 days 13 days 32 days Weighted average interest rate after adjusting for interest rate swaps 2.23 % Weighted average maturity after adjusting for interest rate swaps 1,217 days MBS pledged as collateral under the repurchase agreements and interest rate swaps $ 3,433,252 $ 726,428 $ 4,159,680 Warehouse Line of Credit On December 28, 2018, the Company had secured a warehouse line of credit of $100 million. On March 7, 2019, this credit line was increased to $300 million. At March 31, 2019, the total amount of the credit line was $300 million and the amount outstanding was $15.4 million. The interest rate on this credit line is LIBOR + 2.25%, which was approximately 4.75% for the three months ended March 31, 2019. Additionally, we pay, on a quarterly basis, a facility fee of 25 basis points on the amount of the credit line, which is included in “Interest expense on warehouse line of credit” on our consolidated statements of operations. Master Netting Arrangement In our consolidated balance sheets, all balances associated with repurchase agreements and other borrowings and derivative transactions are presented on a gross basis. Master netting arrangements are agreements between counterparties that govern rights of set-off in the event of default by or bankruptcy of either party to the transactions. The following tables present information about certain assets and liabilities that are subject to master netting arrangements (or similar agreements) only in the event of default on a contract at March 31, 2019 and December 31, 2018 (see Notes 1, 9, and 15 for more information on the Company’s interest rate swaps and other derivative instruments): March 31, 2019 Net Amounts of Assets Gross Amounts Not Offset Gross Amounts or Liabilities in the Balance Sheets (1) of Recognized Gross Amounts Presented in Cash Assets or Offset in the the Balance Financial Collateral Net Liabilities Balance Sheets Sheets Instruments Received Amounts (in thousands) Derivative assets at fair value (2) $ 27,396 $ — $ 27,396 $ (27,396) $ 5,238 $ (22,158) Total $ 27,396 $ — $ 27,396 $ (27,396) $ 5,238 $ (22,158) Repurchase agreements (3) $ 3,760,634 $ — $ 3,760,634 $ (3,760,634) $ — $ — Warehouse line of credit (4) 15,442 — 15,442 (15,442) — — Derivative liabilities at fair value (2) 36,261 — 36,261 (36,261) — — Total $ 3,812,337 $ — $ 3,812,337 $ (3,812,337) $ — $ — (1) Amounts presented are limited to collateral pledged sufficient to reduce the related net amount to zero in accordance with ASU No. 2011‑11, as amended by ASU No. 2013‑01. (2) At March 31, 2019, we had not pledged any Agency MBS as collateral on our interest rate swaps derivatives. We paid approximately $75.5 million in cash margin calls on our derivatives, which is reflected on our consolidated balance sheets as “Restricted cash,” and we received cash from counterparties of approximately $5.2 million, which is reflected as a liability on our consolidated balance sheets as “derivative counterparty margin.” Our interest rate swaps derivatives were approximately $23.0 million in derivative assets and approximately $36.3 million in derivative liabilities at March 31, 2019. (3) At March 31, 2019, we had pledged approximately $3.42 billion in Agency MBS and approximately $700.4 million in Non-Agency MBS as collateral on our repurchase agreements. (4) At March 31, 2019, we had pledged approximately $17.2 million in residential mortgage loans on the warehouse line of credit. December 31, 2018 Net Amounts of Assets Gross Amounts Not Offset Gross Amounts or Liabilities in the Balance Sheets (1) of Recognized Gross Amounts Presented in Cash Assets or Offset in the the Balance Financial Collateral Net Liabilities Balance Sheets Sheets Instruments Received Amounts (in thousands) Derivative assets at fair value (2) $ 46,207 $ — $ 46,207 $ (46,207) $ — $ — Total $ 46,207 $ — $ 46,207 $ (46,207) $ — $ — Repurchase agreements (3) $ 3,811,627 $ — $ 3,811,627 $ (3,811,627) $ — $ — Derivative liabilities at fair value (2) 15,901 — 15,901 (15,901) — — Total $ 3,827,528 $ — $ 3,827,528 $ (3,827,528) $ — $ — (1) Amounts presented are limited to collateral pledged sufficient to reduce the related net amount to zero in accordance with ASU No. 2011‑11, as amended by ASU No. 2013‑01. (2) At December 31, 2018, we had paid approximately $30.3 million on swap and TBA Agency MBS margin calls (included in “restricted cash). Our swap derivatives were approximately $40.2 million in derivative assets and approximately $15.9 million in derivative liabilities at December 31, 2018. (3) At December 31, 2018, we had pledged $3.43 billion in Agency MBS and approximately $726.4 million in Non-Agency MBS as collateral on our repurchase agreements.

Junior Subordinated Notes

Junior Subordinated Notes	3 Months Ended
	Mar. 31, 2019
Debt Disclosure [Abstract]
Junior Subordinated Notes	NOTE 8. JUNIOR SUBORDINATED NOTES On March 15, 2005, we issued $37,380,000 of junior subordinated notes to a newly-formed statutory trust, Anworth Capital Trust I, organized by us under Delaware law. The trust issued $36,250,000 in trust preferred securities to unrelated third party investors. Both the notes and the trust preferred securities require quarterly payments and bear interest at the prevailing three-month LIBOR rate plus 3.10%, reset quarterly. The first interest payments were made on June 30, 2005. Both the notes and the trust preferred securities will mature in 2035 and are currently redeemable, at our option, in whole or in part, without penalty. We used the net proceeds of this private placement to invest in Agency MBS. We have reviewed the structure of the transaction under ASC 810‑10 and concluded that Anworth Capital Trust I does not meet the requirements for consolidation. As of the date of this filing, we have not redeemed any of the notes or trust preferred securities.

Fair Values of Financial Instru

Fair Values of Financial Instruments	3 Months Ended
	Mar. 31, 2019
Fair Values of Financial Instruments
Fair Values of Financial Instruments	NOTE 9. FAIR VALUES OF FINANCIAL INSTRUMENTS As defined in ASC 820‑10, fair value is the price that would be received from the sale of an asset or paid to transfer or settle a liability in an orderly transaction between market participants in the principal (or most advantageous) market for the asset or liability. ASC 820‑10 establishes a fair value hierarchy that ranks the quality and reliability of the information used to determine fair values. Financial assets and liabilities carried at fair value are classified and disclosed in one of the three following categories: Level 1: Quoted market prices in active markets for identical assets or liabilities. Level 2: Observable market based inputs or unobservable inputs that are corroborated by market data. This includes those financial instruments that are valued using models or other valuation methodologies where substantially all of the assumptions are observable in the marketplace, can be derived from observable market data or are supported by observable levels at which transactions are executed in the marketplace. The valuation techniques, including the judgments or assumptions that are used by us in arriving at the fair value of our MBS and derivative instruments, are as follows: The fair values for Agency MBS and TBA Agency MBS are based primarily on independent broker pricing quotes and independent third-party pricing service quotes, which are deemed indicative of market activity. The brokers and third-party pricing services use commonly used market pricing methodology that generally incorporate such factors as coupons, primary and secondary mortgage rates, rate reset period, issuer, loan age, collateral type, periodic and life cap, geography, and prepayment speeds. We evaluate the pricing information we receive taking into account factors such as coupon, prepayment experience, fixed/adjustable rate, coupon index, time to reset, and issuing agency, among other factors. Based on these factors and our market knowledge and expertise, bond prices are compared to prices of similar securities and our own observations of trading activity in the marketplace. The fair values for Non-Agency MBS are based primarily on prices from independent well-known major financial brokers that make markets in these instruments and pricing from independent pricing services. We understand that these market participants use pricing models that not only consider the characteristics of the type of security and its underlying collateral from observable market data but also consider the historical performance data of the underlying collateral of the security, including loan delinquency, loan losses, and credit enhancement. To validate the prices the Company obtains, we consider and review a number of observable market data points including trading activity in the marketplace, and current market intelligence on all major markets, including benchmark security evaluations and bid list results from various sources. We compare the prices received from brokers against the prices received from pricing services and vice-versa and also against our own internal models for reasonableness and make inquiries to the brokers and pricing services about the prices received from these parties and their methods. For derivative instruments, the fair value is determined as follows: For all centrally cleared interest rate swaps (those entered into after September 9, 2013) pricing is provided by the central counterparty (large central clearing exchanges such as the Chicago Mercantile Exchange, or CME, and LCH). These entities use pricing models that reference the underlying rates including the overnight index swap rate and LIBOR forward rate to produce the daily settlement price. To validate the prices for all interest rate swaps, we compare to other sources, such as Bloomberg. Accordingly, our MBS and derivative instruments are classified as Level 2 in the fair value hierarchy. Level 3: Unobservable inputs that are not corroborated by market data. This is comprised of financial instruments whose fair value is estimated based on internally developed models or methodologies utilizing significant inputs that are generally less readily observable from objective sources. In determining the appropriate levels, we perform a detailed analysis of the assets and liabilities that are subject to ASC 820‑10. At each reporting period, all assets and liabilities for which the fair value measurement is based on significant unobservable inputs are classified as Level 3. At March 31, 2019, fair value measurements on a recurring basis were as follows: Level 1 Level 2 Level 3 Total (in thousands) Assets: Agency MBS (1) $ — $ 3,745,091 $ — $ 3,745,091 Non-Agency MBS (1) $ — $ 768,597 $ — $ 768,597 Derivative instruments (2) $ — $ 27,396 $ — $ 27,396 Liabilities: Derivative instruments (2) $ — $ 36,261 $ — $ 36,261 Payable for purchased MBS (1) $ — $ 227,997 $ — $ 227,997 (1) For more detail about the fair value of our MBS by agency and type of security, see Note 3, “Mortgage-Backed Securities.” (2) Derivative instruments include discontinued hedges under ASC 815‑10. For more detail about our derivative instruments, see Note 1, “Organization and Significant Accounting Policies,” and Note 15, “Derivative Instruments.” At December 31, 2018, fair value measurements on a recurring basis were as follows: Level 1 Level 2 Level 3 Total (in thousands) Assets: Agency MBS (1) $ — $ 3,548,719 $ — $ 3,548,719 Non-Agency MBS (1) $ — $ 795,203 $ — $ 795,203 Derivative instruments (2) $ — $ 46,207 $ — $ 46,207 Liabilities: Derivative instruments (2) $ — $ 15,901 $ — $ 15,901 (1) For more detail about the fair value of our MBS by agency and type of security, see Note 3, “Mortgage-Backed Securities.” (2) Derivative instruments include discontinued hedges under ASC 815‑10. For more detail about our derivative instruments, see Note 1, “Organization and Significant Accounting Policies,” and Note 14, “Equity Compensation Plan.” At March 31, 2019 and December 31, 2018, cash and cash equivalents, restricted cash, interest receivable, repurchase agreements, warehouse lines of credit, and interest payable are reflected in our consolidated financial statements at cost, which approximates fair value. The following table presents the carrying value and estimated fair value of the Company’s financial instruments that are not carried at fair value on our consolidated balance sheets at March 31, 2019 and December 31, 2018: March 31, 2019 December 31, 2018 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value (in thousands) Financial Assets: Residential mortgage loans held-for-investment through consolidated securitization trusts $ 535,077 $ 531,723 $ 549,016 $ 538,362 Residential mortgage loans held-for-securitization $ 129,583 $ 129,583 $ 11,660 $ 11,660 Financial Liabilities: Asset-backed securities issued by securitization trusts $ 525,712 $ 521,201 $ 539,651 $ 528,045 Warehouse line of credit $ 15,442 $ 15,442 $ — $ — Payable for purchased loans $ 112,316 $ 112,316 $ — $ — The residential mortgage loans held-for-investment and held-for-securitization are carried at unpaid principal balances net of any premiums or discounts and allowances for loan losses. Asset-backed securities issued by securitization trusts are carried at principal balances net of unamortized premiums or discounts. Warehouse lines of credit are carried at principal balance net of any unamortized debt issuance costs. For residential mortgage loans held-for-investment, fair values are obtained by an independent broker and are considered Level 2 in the fair value hierarchy. The residential mortgage loans held-for-securitization are newly-originated loans that were recently acquired and we believe the cost reflected on our consolidated balance sheets approximates fair value.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2019
Income Taxes
Income Taxes	NOTE 10. INCOME TAXES We have elected to be taxed as a REIT and to comply with the provisions of the Code with respect thereto. Accordingly, we will not be subject to federal or state income taxes to the extent that our distributions to stockholders satisfy the REIT requirements and that certain asset, gross income and stock ownership tests are met. We believe that we currently meet all REIT requirements regarding these tests. Therefore, we believe that we continue to qualify as a REIT under the provisions of the Code.

Series B Cumulative Convertible

Series B Cumulative Convertible Preferred Stock	3 Months Ended
	Mar. 31, 2019
Equity
Series B Cumulative Convertible Preferred Stock	NOTE 11. SERIES B CUMULATIVE CONVERTIBLE PREFERRED STOCK Our Series B Preferred Stock has a par value of $0.01 per share and a liquidation preference of $25.00 per share plus accrued and unpaid dividends (whether or not declared). The holders of our Series B Preferred Stock must receive dividends at a rate of 6.25% per year on the $25.00 liquidation preference before holders of our common stock are entitled to receive any dividends. Our Series B Preferred Stock is senior to our common stock and on parity with our 8.625% Series A Cumulative Preferred Stock, or Series A Preferred Stock, and our 7.625% Series C Cumulative Redeemable Preferred Stock, or Series C Preferred Stock, with respect to the payment of distributions and amounts, upon liquidation, dissolution or winding up. So long as any shares of our Series B Preferred Stock remain outstanding, we will not, without the affirmative vote or consent of the holders of at least two-thirds of the shares of our Series B Preferred Stock outstanding at the time, authorize or create, or increase the authorized or issued amount of, any class or series of capital stock ranking senior to our Series B Preferred Stock with respect to the payment of dividends or the distribution of assets upon liquidation, dissolution or winding-up. Our Series B Preferred Stock has no maturity date, is not redeemable and is convertible at the then-current conversion rate into shares of our common stock per $25.00 liquidation preference. The conversion rate is adjusted in any fiscal quarter in which the cash dividends paid to common stockholders results in an annualized common stock dividend yield that is greater than 6.25%. The conversion ratio is also subject to adjustment upon the occurrence of certain specific events, such as a change in control. Our Series B Preferred Stock is convertible into shares of our common stock at the option of the holder(s) of Series B Preferred Stock at any time at the then-prevailing conversion rate. On or after January 25, 2012, we may, at our option, under certain circumstances, convert each share of Series B Preferred Stock into a number of shares of our common stock at the then-prevailing conversion rate. We may exercise this conversion option only if our common stock price equals or exceeds 130% of the then-prevailing conversion price of our Series B Preferred Stock for at least twenty (20) trading days in a period of thirty (30) consecutive trading days (including the last trading day of such period) ending on the trading day immediately prior to our issuance of a press release announcing the exercise of the conversion option. During the three months ended March 31, 2019, we did not, at our option, convert any shares of Series B Preferred Stock. Our Series B Preferred Stock contains certain fundamental change provisions that allow the holder to redeem our Series B Preferred Stock for cash if certain events occur, such as a change in control. Our Series B Preferred Stock generally does not have voting rights, except if dividends on the Series B Preferred Stock are in arrears for six or more quarterly periods (whether or not consecutive). Under such circumstances, the holders of our Series B Preferred Stock, together with the holders of our Series A Preferred Stock and our Series C Preferred Stock, would be entitled to elect two additional directors to our Board to serve until all unpaid dividends have been paid or declared and set aside for payment. In addition, certain material and adverse changes to the terms of our Series B Preferred Stock may not be taken without the affirmative vote of at least two-thirds of the outstanding shares of Series B Preferred Stock, Series A Preferred Stock, and Series C Preferred Stock voting together as a single class. Through March 31, 2019, we have declared and set aside for payment the required dividends for our Series B Preferred Stock. During the three months ended March 31, 2019, there were no transactions to convert shares of our Series B Preferred Stock into shares of our common stock.

Public Offerings and Capital St

Public Offerings and Capital Stock	3 Months Ended
	Mar. 31, 2019
Equity
Public Offerings and Capital Stock	NOTE 12. PUBLIC OFFERINGS AND CAPITAL STOCK At March 31, 2019, our authorized capital included 200,000,000 shares of common stock, of which 98,564,889 shares were issued and outstanding. At March 31, 2019, our authorized capital included 20,000,000 shares of $0.01 par value preferred stock, of which 5,150,000 shares had been designated 8.625% Series A Cumulative Preferred Stock (liquidation preference $25.00 per share), 3,150,000 shares had been designated 6.25% Series B Cumulative Convertible Preferred Stock (liquidation preference $25.00 per share), and 5,000,000 shares had been designated 7.625% Series C Cumulative Redeemable Preferred Stock (liquidation preference $25.00 per share). The Series A Preferred Stock has no maturity date and we are not required to redeem it at any time. We may redeem the Series A Preferred Stock for cash, at our option, in whole or from time to time in part, at a redemption price of $25.00 per share, plus accrued and unpaid dividends, if any, to the redemption date. To date, we have not redeemed any shares of our Series A Preferred Stock. The undesignated shares of preferred stock may be issued in one or more classes or series with such distinctive designations, rights, and preferences as determined by our Board. At March 31, 2019, there were 1,919,378 shares of Series A Preferred Stock issued and outstanding, 779,743 shares of Series B Preferred Stock issued and outstanding, and 2,010,278 shares of Series C Preferred Stock issued and outstanding. On January 27, 2015, we completed a public offering of 300,000 shares of our Series C Preferred Stock at a public offering price of $24.50 per share and received net proceeds of approximately $7 million. The shares were sold pursuant to the Company’s effective shelf registration statement on Form S‑3. The Series C Preferred Stock has no maturity date and is not subject to any sinking fund or mandatory redemption. On or after January 27, 2020, we may, at our option, redeem the Series C Preferred Stock for cash, in whole or from time to time in part, at a redemption price of $25.00 per share plus accrued and unpaid dividends, if any, to the redemption date. On August 10, 2016, we entered into an At Market Issuance Sales Agreement, or the FBR Sales Agreement, with FBR Capital Markets & Co., or FBR, pursuant to which we may offer and sell from time to time through FBR as our agent, up to $196,615,000 maximum aggregate amount of our common stock, Series B Preferred Stock, and Series C Preferred Stock, in such amounts as we may specify by notice to FBR, in accordance with the terms and conditions set forth in the FBR Sales Agreement. During the three months ended March 31, 2019, we did not sell any shares of our Series B Preferred Stock, Series C Preferred Stock, or common stock under the FBR Sales Agreement. At March 31, 2019, there was approximately $152.1 million available for sale and issuance under the FBR Sales Agreement. On October 3, 2011, we announced that our Board had authorized a share repurchase program which permits us to acquire up to 2,000,000 shares of our common stock. The shares are expected to be acquired at prevailing prices through open market transactions. The manner, price, number, and timing of share repurchases will be subject to market conditions and applicable rules of the U.S. Securities and Exchange Commission, or the SEC. Our Board also authorized the Company to purchase an amount of our common stock up to the amount of common stock sold through our Dividend Reinvestment and Stock Purchase Plan. Subsequently, our Board authorized the Company to acquire an aggregate of an additional 45,000,000 shares (pursuant to six separate authorizations) between December 13, 2013 and January 22, 2016. During the three months ended March 31, 2019, we did not repurchase any shares of our common stock under our share repurchase program. Our Dividend Reinvestment and Stock Purchase Plan allows stockholders and non-stockholders to purchase shares of our common stock and to reinvest dividends therefrom to acquire additional shares of our common stock. On March 15, 2018, we filed a shelf registration statement on Form S-3 with the SEC registering up to 15,303,119 shares of our common stock for our 2018 Dividend Reinvestment and Stock Purchase Plan, or the 2018 DRP Plan, which replaced our 2015 Dividend Reinvestment and Stock Purchase Plan upon its expiration. The registration statement for the 2018 DRP Plan was declared effective by the SEC on March 26, 2018. During the three months ended March 31, 2019, we issued an aggregate of 81,841 shares of our common stock at a weighted average price of $4.36 per share under the 2018 DRP Plan, resulting in proceeds to us of approximately $356 thousand. On August 5, 2014, we filed a registration statement on Form S‑8 with the SEC to register an aggregate of up to 2,000,000 shares of our common stock to be issued pursuant to the Anworth Mortgage Asset Corporation 2014 Equity Compensation Plan, or the 2014 Equity Plan. On April 1, 2016, we filed a shelf registration statement on Form S‑3 with the SEC, offering up to $534,442,660 maximum offering price of our capital stock. This registration statement was declared effective by the SEC on April 13, 2016. At March 31, 2019, approximately $490.2 million of our capital stock was available for future issuance under this registration statement. This shelf registration statement will expire in April 2019. See Note 18, “Subsequent Events,” regarding the filing and effectiveness of a new shelf registration statement on Form S-3.

Transactions with Affiliates

Transactions with Affiliates	3 Months Ended
	Mar. 31, 2019
Transactions with Affiliates
Transactions with Affiliates	NOTE 13. TRANSACTIONS WITH AFFILIATES Management Agreement and Externalization Effective as of December 31, 2011, we entered into the Management Agreement with our Manager, pursuant to which our day-to-day operations are being conducted by our Manager. Our Manager is supervised and directed by our Board and is responsible for (i) the selection, purchase, and sale of our investment portfolio; (ii) our financing and hedging activities; and (iii) providing us with portfolio management, administrative, and other services and activities relating to our assets and operations as may be appropriate. Our Manager will also perform such other services and activities relating to our assets and operations as described in the Management Agreement. In exchange for services provided, our Manager receives a management fee, paid monthly in arrears, in an amount equal to one-twelfth of 1.20% of our Equity (as defined in the Management Agreement). On the effective date of the Management Agreement, the employment agreements with our executives were terminated, our employees became employees of our Manager, and we took such other actions as we believed were reasonably necessary to implement the Management Agreement and externalize our management function. Mr. Joseph E. McAdams, our Chief Executive Officer and President and the Chief Investment Officer of our Manager, beneficially owns 47.4% of the outstanding membership interests of our Manager; Mr. Lloyd McAdams, one of our directors, beneficially owns 47.4% of the outstanding membership interests of our Manager; and Ms. Heather U. Baines, an Executive Vice President of our Manager, beneficially owns 5.2% of the outstanding membership interests of our Manager. The Management Agreement may be terminated without cause, as defined in the agreement, after the expiration of any annual renewal term. We are required to provide 180-days’ prior notice of non-renewal of the Management Agreement and must pay a termination fee on the last day of any automatic renewal term equal to three times the average annual management fee earned by our Manager during the prior 24-month period immediately preceding the most recently completed month prior to the effective date of termination. We may only not renew the Management Agreement with or without cause with the consent of the majority of our independent directors. These provisions make it difficult to terminate the Management Agreement and increase the effective cost to us of not renewing the Management Agreement. Certain of our former officers and employees were previously granted restricted stock and other equity awards (see Note 14, “Equity Compensation Plan”), including dividend equivalent rights, in connection with their service to us, and certain of our former officers and employees had agreements under which they would receive payments if the Company is subject to a change in control (which is also discussed in Note 13, “Transactions With Affiliates”). The officers and employees of our Manager will continue to be eligible to receive equity awards under equity compensation plans in effect now or in the future. Messrs. Joseph E. McAdams, Charles J. Siegel, John T. Hillman, and Ms. Heather U. Baines and others are officers and employees of PIA Farmland, Inc. and its external manager, PIA, where they devote a portion of their time. PIA Farmland, Inc., a privately-held real estate investment trust investing in U.S. farmland properties to lease to independent farm operators, was incorporated in February 2013 and acquired its first farm property in October 2013. These officers and employees are under no contractual obligations to PIA Farmland, Inc., its external manager, PIA, or to Anworth or its external manager, Anworth Management LLC, as to their time commitment. Change in Control and Arbitration Agreements On June 27, 2006, we entered into Change in Control and Arbitration Agreements with Mr. Charles J. Siegel, our Chief Financial Officer, and with various officers and employees of our Manager. These agreements provide that should a change in control (as defined in the agreements) occur, each of these persons will receive certain severance and other benefits valued as of December 31, 2011. Under these agreements, in the event that a change in control occurs, each of these persons will receive a lump sum payment equal to (i) 12 months annual base salary in effect on December 31, 2011, plus (ii) the average annual incentive compensation received for the two complete fiscal years prior December 31, 2011, plus (iii) the average annual bonus received for the two complete fiscal years prior to December 31, 2011, as well as other benefits. For one of the Senior Vice Presidents and Portfolio Managers of our Manager, in the event that a change in control occurs, in addition to other benefits, he will receive a lump sum payment equal to (i) 12 months of the annual base salary (in effect on September 18, 2014) paid by our Manager plus (ii) $350,000. The Change in Control and Arbitration Agreements also provide for accelerated vesting of equity awards granted to these persons upon a change in control. Agreements with Pacific Income Advisers, Inc. On January 26, 2012, we entered into a sublease agreement that became effective on July 1, 2012 with PIA. Under the sublease agreement, we lease, on a pass-through basis, 7,300 square feet of office space from PIA at the same location and pay rent at an annual rate equal to PIA’s obligation, which is currently $69.42 per square foot. The base monthly rental for us is $42,231.54, which will be increased by 3% per annum on July 1, 2019. The sublease agreement runs through June 30, 2022 unless earlier terminated pursuant to the master lease. During the three months ended March 31, 2019, we expensed $139 thousand in rent and related expenses to PIA under this sublease agreement, which is included in “General and administrative expenses” on our consolidated statements of operations. During the three months ended March 31, 2018, we expensed $139 thousand in rent and related expenses to PIA under this sublease agreement. In accordance with ASU 2016-2, “Leases,” the Company has elected the practical expedients, as the sublease agreement was classified as an operating lease prior to the new lease standard. It is still classified now as an operating lease. The present value of the operating lease is $1.66 million and is shown as both the Right to Use Asset and a Long-Term Lease Obligation on our unaudited consolidated balance sheets. At January 1, 2019, the discount rate used for the present value calculation was 2.23% and the remaining term was 42 months. At March 31, 2019, the future minimum lease commitment was as follows: Total 2019 2020 2021 2022 Commitment (in whole dollars) Commitment (undiscounted cash flows) $ 387,679 $ 529,800 $ 545,697 $ 276,882 $ 1,740,058 Discounted cash flows on the lease commitment (1) $ 381,947 $ 513,143 $ 515,623 $ 257,305 $ 1,668,018 (1) The difference between the total commitment amount and the amount on the consolidated balance sheets is due to the amortization of the lease asset and lease liability being done on a straight-line basis rather than by the discounted cash flows. Under our administrative services agreement with PIA, it provides administrative services and equipment to us including human resources, operational support and information technology, and we pay an annual fee of 5 basis points on the first $225 million of stockholders’ equity and 2.25 basis points thereafter (paid quarterly in arrears) for those services. The administrative services agreement had an initial term of one year and renews for successive one-year terms thereafter unless either party gives notice of termination no less than 30 days before the expiration of the then-current annual term. We may also terminate the administrative services agreement upon 30 days prior written notice for any reason and immediately if there is a material breach by PIA. During the three months ended March 31, 2019, we paid fees of $49 thousand to PIA in connection with the administrative services agreement. During the three months ended March 31, 2018, we paid fees of $39 thousand to PIA in connection with the administrative services agreement.

Equity Compensation Plan

Equity Compensation Plan	3 Months Ended
	Mar. 31, 2019
Equity Compensation Plan
Equity Compensation Plan	NOTE 14. EQUITY COMPENSATION PLAN 2014 Equity Compensation Plan At our 2014 annual meeting of stockholders held on May 22, 2014, our stockholders approved the adoption of the Anworth Mortgage Asset Corporation 2014 Equity Compensation Plan, or the 2014 Equity Plan, which replaced the Anworth Mortgage Asset Corporation 2004 Equity Compensation Plan, or the 2004 Equity Plan, due to its expiration. We filed a registration statement on Form S‑8 on August 5, 2014 to register up to an aggregate of 2,000,000 shares of our common stock to be issued pursuant to the 2014 Equity Plan. The 2014 Equity Plan decreased the aggregate share reserve from 3,500,000 shares that were available under the 2004 Equity Plan to 2,000,000 shares of our registered common stock available under the 2014 Equity Plan. The 2014 Equity Plan authorizes our Board, or a committee of our Board, to grant dividend equivalent rights, or DERs, and phantom shares, which qualify as performance-based awards under Section 162(m) of the Code. Unlike the 2004 Equity Plan, however, the 2014 Equity Plan does not provide for automatic increases in the aggregate share reserve or the number of shares remaining available for grant and only provides for the granting of DERs or phantom shares. In August 2016, we granted to various officers and employees an aggregate of 146,552 performance-based restricted stock units (or phantom shares) with no associated grants of DERs. During the period commencing on the day immediately following the three-year anniversary of the grant date and ending on the ten-year anniversary of the grant date, the restricted stock units will vest on the last day of any month when the total return to stockholders (meaning the aggregate of our common stock price appreciation and dividends declared, assuming full reinvestment of such dividends) exceeds 10% per annum. During the period commencing on the grant date and ending on the last day of the calendar month after the three-year anniversary of the grant date, the restricted stock units will vest immediately upon the Grantee’s involuntary termination of service for any reason other than for cause. The closing price of the Company’s common stock on the grant date was $4.96. During the three months ended March 31, 2019, the amount expensed on these grants was approximately $21 thousand. The unrecognized stock compensation expense at March 31, 2019 was approximately $40 thousand. During the three months ended March 31, 2018, the amount expensed on these grants was approximately $21 thousand. In December 2017, we issued to various officers and employees an aggregate of 162,613 performance-based restricted stock units (or phantom shares) with no associated grants of DERs. During the period commencing on the day immediately following the three-year anniversary of the grant date and ending on the ten-year anniversary of the grant date, the restricted stock units shall vest on the last day of any month when the total return to stockholders (meaning the aggregate of our common stock price appreciation and dividends declared, assuming full reinvestment of such dividends) exceeds 10% per annum. During the period commencing on the grant date and ending on the last day of the calendar month after the three-year anniversary of the grant date, the restricted stock units will vest immediately upon the grantee’s involuntary termination of service for any reason other than for cause. The closing price of the Company’s common stock on the grant date was $5.66. During the three months ended March 31, 2019, the amount expensed on these grants was approximately $4 thousand. The unrecognized stock expense on these grants at March 31, 2019 was approximately $148 thousand. During the three months ended March 31, 2018, the amount expensed on these grants was approximately $4 thousand. Certain of our former officers have previously been granted restricted stock and other equity incentive awards, including DERs, in connection with their service to us. In connection with the Externalization, certain of the agreements under which our former officers have been granted equity awards were modified so that such agreements will continue with respect to our former officers after they became officers and employees of our Manager. As a result, these awards and any future grants will be accounted for as non-employee awards. In addition, as officers and employees of our Manager, they will continue to be eligible to receive equity incentive awards under equity incentive plans in effect now or in the future. In accordance with the Externalization effective December 31, 2011, the DERs previously granted to all of our officers were terminated under the 2007 Dividend Equivalent Rights Plan and were reissued under the 2004 Equity Plan with the same amounts, terms, and conditions. The 2004 Equity Plan was subsequently replaced by the 2014 Equity Plan. Under the 2014 Equity Plan, a DER is a right to receive amounts equal in value to the dividend distributions paid on a share of our common stock. DERs are paid in either cash or shares of our common stock, whichever is specified by our Compensation Committee at the time of grant, at such times as dividends are paid on shares of our common stock during the period between the date a DER is issued and the date the DER expires or earlier terminates. These DERs are not attached to any stock and only have the right to receive the same cash distribution per common share distributed to our common stockholders during the term of the grant. All of these grants have a five-year term from the date of the grant. During the three months ended March 31, 2019, we paid or accrued $91 thousand related to DERs granted. At March 31, 2019, there were 773,311 DERs issued and outstanding to directors and officers of our Company and employees of our Manager. During the three months ended March 31, 2018, we paid or accrued $105 thousand related to DERs granted.

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2019
Derivative Instruments
Derivative Instruments	NOTE 15. DERIVATIVE INSTRUMENTS The table below presents the fair value of our derivative instruments as well as their classification in our consolidated balance sheets as of March 31, 2019 and December 31, 2018: March 31, December 31, Derivative Instruments Balance Sheet Location 2019 2018 (in thousands) Interest rate swaps Derivative Assets $ 22,974 $ 40,192 TBA Agency MBS Derivative Assets 4,422 6,015 $ 27,396 $ 46,207 Interest rate swaps Derivative Liabilities $ 36,261 $ 15,901 TBA Agency MBS Derivative Liabilities — — $ 36,261 $ 15,901 Interest Rate Swaps Agreements At March 31, 2019, we were a counterparty to interest rate swaps, which are derivative instruments as defined by ASC 815‑10, with an aggregate notional amount of $3.36 billion and a weighted average maturity of approximately 47 months. We utilize interest rate swaps to manage interest rate risk relating to our repurchase agreements and do not anticipate entering into derivative transactions for speculative or trading purposes. In accordance with the interest rate swaps agreements, we pay a fixed-rate of interest during the term of the interest rate swaps agreements (ranging from 1.287% to 3.2205%) and receive a payment that varies with the three-month LIBOR rate. During the three months ended March 31, 2019, we added four new interest rate swaps for a total notional amount of $200 million. During the three months ended March 31, 2019, two interest rate swaps with an aggregate notional amount of $150 million matured. At March 31, 2019, the amount in AOCI relating to interest rate swaps was approximately $10.5 million. The estimated net amount of the existing losses that were reported in AOCI at March 31, 2019 that is expected to be reclassified into earnings within the next twelve months is approximately $3.8 million. For the three months ended March 31, 2019 and March 31, 2018, we had an unrealized loss of approximately $33.7 million and an unrealized gain of approximately $25.4 million, respectively, on interest rate swaps. At March 31, 2019 and December 31, 2018, our interest rate swaps had the following notional amounts, weighted average fixed rates, and remaining terms: March 31, 2019 December 31, 2018 Weighted Weighted Average Remaining Average Remaining Notional Fixed Term in Notional Fixed Term in Maturity Amount Rate Months Amount Rate Months (in thousands) (in thousands) Less than 1 year $ 650,000 1.61 % 6 $ 725,000 1.60 % 7 1 year to 2 years 666,000 1.76 18 591,000 1.70 19 2 years to 3 years 300,000 1.87 30 400,000 1.96 30 3 years to 4 years 270,000 2.09 44 220,000 1.92 43 4 years to 5 years 355,000 2.39 57 205,000 2.27 57 5 years to 7 years 525,000 2.48 75 475,000 2.41 73 7 years to 10 years 590,000 2.82 104 690,000 2.83 104 $ 3,356,000 2.13 % 47 $ 3,306,000 2.10 % 47 Interest Rate Swaps Agreements by Counterparty March 31, December 31, 2019 2018 (in thousands) Central clearing houses (1) $ 3,356,000 $ 3,306,000 (1) For all interest rate swaps entered into after September 9, 2013, the counterparty will be central clearing houses, such as the CME or LCH, regardless of who the trading party is. See the section entitled “Derivative Financial Instruments – Interest Rate Risk Management” in Note 1, “Organization and Significant Accounting Policies,” for additional details. TBA Agency MBS We also enter into TBA contracts and will recognize a gain or loss on the sale of the contracts or dollar roll income. See the section in Note 1, “Organization and Significant Accounting Policies – Derivative Financial Instruments – Risk Management,” for more information on TBA Agency MBS. During the three months ended March 31, 2019, we recognized a gain on derivatives-TBA Agency MBS (including derivative income) of approximately $6.4 million. During the three months ended March 31, 2018, we recognized a loss on derivatives-TBA Agency MBS (including derivative income) of approximately $12 million. The types of securities involved in these TBA contracts are Fannie Mae 30-year fixed-rate securities with coupons generally ranging from 4.0% to 4.5%. At March 31, 2019, the net notional amount of the TBA Agency MBS was approximately $700 million. For more information on our accounting policies, the objectives, and risk exposures relating to derivatives and hedging agreements, see the section on “Derivative Financial Instruments” in Note 1, “Organization and Significant Accounting Policies.” For more information on the fair value of our interest rate swaps, see Note 9, “Fair Values of Financial Instruments.”

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2019
Commitments And Contingencies
Commitments and Contingencies	NOTE 16. COMMITMENTS AND CONTINGENCIES Lease Commitment and Administrative Services Commitment — We sublease office space and use administrative services from PIA as more fully described in Note 13, “Transactions With Affiliates.”

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 17. EARNINGS PER SHARE The computation of earnings per share, or EPS, for the three months ended March 31, 2019 and March 31, 2018 is as follows: Net (Loss) to Common Average (Loss) Stockholders Shares per Share (in thousands) For the three months ended March 31, 2019 Basic EPS $ (22,267) 98,537 $ (0.23) Effect of dilutive securities — — — Diluted EPS $ (22,267) 98,537 $ (0.23) For the three months ended March 31, 2018 Basic EPS $ (5,150) 98,185 $ (0.05) Effect of dilutive securities — — — Diluted EPS $ (5,150) 98,185 $ (0.05)

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2019
Subsequent Events
Subsequent Events	NOTE 18. SUBSEQUENT EVENTS Effective April 1, 2019, the conversion rate of our Series B Preferred Stock increased from 5.2588 shares of our common stock to 5.3539 shares of our common stock based upon the common stock dividend of $0.13 that was declared on March 14, 2019. On April 4, 2019, we filed a new shelf registration statement on Form S-3 with the SEC, pursuant to which we may offer up to $490,236,182 of our capital stock, due to the upcoming expiration of our prior registration statement. The new shelf registration statement was declared effective by the SEC on April 19, 2019. On April 30, 2019, we settled on an aggregate of $74.5 million (including premium and accrued interest) of Non-QM residential mortgage loans that we acquired during the quarter ended March 31, 2019.

Organization and Significant _2

Organization and Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2019
Organization and Significant Accounting Policies
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents include cash on hand and highly liquid investments with original maturities of three months or less. The carrying amount of cash equivalents approximates their fair value. Restricted cash includes cash pledged as collateral to counterparties on various derivative transactions.
Reverse Repurchase Agreements	Reverse Repurchase Agreements We use securities purchased under agreements to resell, or reverse repurchase agreements, as a means of investing excess cash. Although legally structured as a purchase and subsequent resale, reverse repurchase agreements are treated as financing transactions under which the counterparty pledges securities (principally U.S. treasury securities) and accrued interest as collateral to secure a loan. The difference between the purchase price that we pay and the resale price that we receive represents interest paid to us and is included in “Other interest income” on our consolidated statements of operations. It is our policy to generally take possession of securities purchased under reverse repurchase agreements at the time such agreements are made.
Mortgage-Backed Securities	Mortgage-Backed Securities Agency MBS are securities that are obligations (including principal and interest) guaranteed by the U.S. government, such as Ginnie Mae, or guaranteed by federally sponsored enterprises, such as Fannie Mae or Freddie Mac. Our investment-grade Agency MBS portfolio is invested primarily in fixed-rate and adjustable-rate mortgage-backed pass-through certificates and hybrid adjustable-rate MBS. Hybrid adjustable-rate MBS have an initial interest rate that is fixed for a certain period, typically one to ten years, and then adjusts annually for the remainder of the term of the asset. We structure our investment portfolio to be diversified with a variety of prepayment characteristics, investing in mortgage assets with prepayment penalties, investing in certain mortgage security structures that have prepayment protections and purchasing mortgage assets at a premium and at a discount. A portion of our portfolio consists of Non-Agency MBS. Our principal business objective is to generate net income for distribution to our stockholders primarily based upon the spread between the interest income on our mortgage assets and our borrowing costs to finance our acquisition of those assets. We classify our MBS as either trading investments, available-for-sale investments, or held-to-maturity investments. Our management determines the appropriate classification of the securities at the time they are acquired and evaluates the appropriateness of such classifications at each balance sheet date. We currently classify most of our MBS as available-for-sale. We have also designated a portion of our MBS as trading investments. All assets that are classified as available-for-sale are carried at fair value and unrealized gains or losses are generally included in “Accumulated other comprehensive income (loss)” as a component of stockholders’ equity. Losses that are credit-related on securities classified as available-for-sale, which are determined by management to be other-than-temporary in nature, are reclassified from “Other comprehensive income (loss)” on our consolidated balance sheets to income (loss) on our consolidated statements of operations. Assets classified as trading investments are reported at fair value with unrealized gains and losses included in our consolidated statements of operations. The most significant source of our revenue is derived from our investments in MBS. Interest income on Agency MBS is accrued based on the actual coupon rate and the outstanding principal amount of the underlying mortgages. Premiums and discounts are amortized or accreted into interest income over the estimated lives of the securities using the effective interest yield method, adjusted for the effects of actual and estimated prepayments based on ASC 320‑10. Our policy for estimating prepayment speeds for calculating the effective yield is to evaluate historical performance, street consensus prepayment speeds, and current market conditions. If our estimate of prepayments is materially incorrect as compared to the aforementioned references, we may be required to make an adjustment to the amortization or accretion of premiums and discounts that would have an impact on future income, which could be material and adverse. A majority of our Non-Agency MBS are accounted for under “Loans and Debt Securities Acquired with Credit Deterioration” (ASC 310‑30). A debt security accounted for under ASC 310‑30 is initially recorded at its purchase price (fair value). The amount of expected cash flows that exceed the initial investment represents the market yield adjustment (accretable yield), which is recognized as interest income on a level yield basis over the life of the security. The excess of total contractual cash flows over the cash flows expected at its origination is considered to be the non-accretable difference. We must periodically reassess the expected cash flows of loans accounted for under ASC 310‑30 along with the cash flows received. A significant increase in expected cash flows must be accounted for as an increase in the rate of accretion over the remaining life of the security. Conversely, if expected cash flows decrease, an other-than-temporary impairment must be recognized as a charge to earnings. Adjustments to the fair value of Non-Agency MBS, which are accounted for as available-for-sale securities, are recorded in “Accumulated other comprehensive income,” or AOCI. The determination as to whether impairment and accretable yield exists is based on cash flow projections related to the securities. As a result, the timing and amount of impairment and accretable yield constitutes a material estimate that is susceptible to significant change. Interest income on the Non-Agency MBS that were purchased at a discount to par value, and were rated below AA at the time of purchase, is recognized based on the security’s effective interest rate. The effective interest rate on these securities is based on the projected cash flows from each security, which are estimated based on our observation of current information and events, and include assumptions related to interest rates, prepayment rates, and the timing and amount of credit losses. On at least a quarterly basis, we review and, if appropriate, make adjustments to our cash flow projections based on input and analysis received from external sources, internal models, and our judgment about interest rates, prepayment rates, the timing and amount of credit losses, and other factors. Changes in cash flows from those originally projected, or from those estimated at the last evaluation, may result in a prospective change in the yield/interest income recognized on such securities. Actual maturities of the available-for-sale securities are affected by the contractual lives of the associated mortgage collateral, periodic payments of principal, and prepayments of principal. Therefore, actual maturities of available-for-sale securities are generally shorter than stated contractual maturities. Stated contractual maturities are generally greater than ten years. There can be no assurance that our assumptions used to estimate future cash flows or the current period’s yield for each asset would not change in the near term, and the change could be material. Based on the projected cash flows from our Non-Agency MBS purchased at a discount to par value, a portion of the purchase discount may be designated as a non-accretable difference and, therefore, not accreted into interest income. The amount designated as a non-accretable difference may be adjusted over time, based on the actual performance of the security, its underlying collateral, actual and projected cash flow from such collateral, economic conditions, and other factors. If the performance of a security with a non-accretable difference is more favorable than forecasted, a portion of the amount designated as a non-accretable difference may be accreted into interest income prospectively. Conversely, if the performance of a security with a non-accretable difference is less favorable than forecasted, an impairment charge and write-down of such security to a new cost basis results. Securities transactions are recorded on the date the securities are purchased or sold. Realized gains or losses from securities transactions are determined based on the specific identified cost of the securities.
Residential Mortgage Loans Held-for-Securitization	Residential Mortgage Loans Held-for-Securitization Residential mortgage loans held-for-securitization are held at our wholly-owned subsidiary, Anworth Mortgage Loans, Inc., in connection with our intent to sponsor our own securitizations. Loans purchased with the intent to securitize are recorded on the trade date. Any fees associated with acquiring the loans held-for-securitization, as well as any premium paid to acquire the loans, are deferred. These are included in the loan balance and amortized using the effective interest yield method. Interest income is recorded as revenue when earned and deemed collectible or until a loan becomes more than 90 days past due, at which point the loan is placed on non-accrual status. When a non-accrual loan has been cured, meaning when all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternatively, nonaccrual loans may be placed back on accrual status after the loan is considered re-performing, generally when the loan has been current for 6 months. The residential mortgage loans held-for-securitization are financed by a warehouse line of credit. The payment and performance of the obligations by Anworth Mortgage Loans under the warehouse line is guaranteed by Anworth Mortgage Asset Corporation. We may be required to remove a loan from a warehouse line of credit. We do not maintain a loan repurchase reserve, as any risk of loss due to loan repurchase would normally be covered by recourse to the companies from which we acquired the loans. Debt issuances costs incurred in connection with this line of credit (such as facility fees and legal costs) are deducted from the debt’s carrying amount and amortized ratably to interest expense over the term of the debt.
Residential Mortgage Loans Held-for-Investment Through Consolidated Securitization Trusts	Residential Mortgage Loans Held-for-Investment Through Consolidated Securitization Trusts Residential mortgage loans held-for-investment through consolidated securitization trusts are carried at unpaid principal balances net of any premiums or discounts and allowance for loan losses. We expect that we will be required to continue to consolidate the securitization trusts that hold the residential mortgage loans. We establish an allowance for residential loan losses based on our estimate of credit losses. These estimates for the allowance for loan losses require consideration of various observable inputs including, but not limited to, historical loss experience, delinquency status, borrower credit scores, geographic concentrations and loan-to-value ratios, and are adjusted for current economic conditions as deemed necessary by our management. Many of these factors are subjective and cannot be reduced to a mathematical formula. In addition, since we have not incurred any significant direct losses on our portfolio, we review national historical credit performance information from external sources to assist in our analysis. Changes in our estimates can significantly impact the allowance for loan losses and provision expense. The allowance reflects management’s best estimate of the credit losses inherent in the loan portfolio at the balance sheet date. It is also possible that we will experience credit losses that are different from our current estimates or that the timing of those losses may differ from our estimates. We recognize interest income from residential mortgage loans on an accrual basis. Any related premium or discount is amortized into interest income using the effective interest method over the estimated life of these loans. Coupon interest is recognized as revenue when earned and deemed collectable or until a loan becomes more than 90 days past due, at which point the loan is placed on non-accrual status. Interest previously accrued for loans that have been placed on non-accrual status is reversed against interest income in the period the loan is placed in non-accrual status. Residential loans delinquent more than 90 days or in foreclosure are characterized as delinquent. Cash principal and interest that are advanced from servicers after a loan becomes greater than 90 days past due are recorded as a liability due to the servicer. When a delinquent loan previously placed on non-accrual status has been cured, meaning when all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Alternatively, non-accrual loans may be placed back on accrual status after the loan is considered re-performing. A restructured loan is considered re-performing when the loan has been current for at least 6 months.
Residential Properties	Residential Properties Residential properties are stated at cost and consist of land, buildings, and improvements, including other costs incurred during their acquisition, possession, and renovation. Residential properties purchased that are not subject to an existing lease are treated as asset acquisitions and, as such, are recorded at their purchase price, including acquisition and renovation costs, all of which are allocated to land and building based upon their relative fair values at the date of acquisition. Building depreciation is computed on a straight-line basis over the estimated useful lives of the assets. We generally use a 27.5 year estimated life with no salvage value. We incur costs to prepare our acquired properties to be leased. These costs are capitalized and allocated to building costs. Costs related to the restoration, renovation, or improvement of our properties that improve and extend their useful lives are capitalized and depreciated over their estimated useful lives. Expenditures for ordinary repairs and maintenance are expensed as incurred. Costs incurred by us to lease the properties are capitalized and amortized over the life of the lease. Escrow deposits include refundable and non-refundable cash and earnest money on deposit with independent third parties for property purchases.
Repurchase Agreements	Repurchase Agreements We finance the acquisition of MBS primarily through the use of repurchase agreements. Under these repurchase agreements, we sell securities to a lender and agree to repurchase the same securities in the future for a price that is higher than the original sales price. The difference between the sale price that we receive and the repurchase price that we pay represents interest paid to the lender. Although structured as a sale and repurchase obligation, a repurchase agreement operates as a financing under which we pledge our securities and accrued interest as collateral to secure a loan which is equal in value to a specified percentage of the estimated fair value of the pledged collateral. We retain beneficial ownership of the pledged collateral. Upon the maturity of a repurchase agreement, we are required to repay the loan and concurrently receive back our pledged collateral from the lender or, with the consent of the lender, we may renew such agreement at the then-prevailing financing rate. These repurchase agreements may require us to pledge additional assets to the lender in the event the estimated fair value of the existing pledged collateral declines.
Asset-Backed Securities Issued by Securitization Trusts	Asset-Backed Securities Issued by Securitization Trusts Asset-backed securities issued by the securitization trusts are recorded at principal balances net of unamortized premiums or discounts. This long-term debt is collateralized only by the assets held in the trusts and is otherwise non-recourse to the Company.
Derivative Financial Instruments	Derivative Financial Instruments Risk Management We primarily use short-term (less than or equal to 12 months) repurchase agreements to finance the purchase of MBS. These obligations expose us to variability in interest payments due to changes in interest rates. We continuously monitor changes in interest rate exposures and evaluate various opportunities to mitigate this risk. Our objective is to limit the impact of interest rate changes on our earnings and cash flows. The principal instruments we use to achieve this are interest rate swap agreements, or interest rate swaps, which effectively convert a percentage of our repurchase agreements to fixed-rate obligations over a period of up to ten years. Under interest rate swaps, we agree to pay an amount equal to a specified fixed rate of interest times a notional principal amount and we receive in return an amount equal to a specified variable-rate of interest times a notional amount, generally based on the London Interbank Offered Rate, or LIBOR. The notional amounts are not exchanged. We do not issue or hold the interest rate swaps for speculative purposes. We also enter into To-Be-Announced, or TBA, Agency MBS as either a means of investing in and financing Agency MBS or as a means of disposing of or reducing our exposure to agency securities. Pursuant to TBA contracts, we agree to purchase or sell for future delivery Agency MBS with certain principal and interest terms and certain types of collateral, but the particular Agency MBS to be delivered are not identified until shortly before the TBA settlement date. We also may choose, prior to settlement, to move the settlement of these MBS out to a later date by entering into an offsetting short or long position (referred to as a “pair off”), net settling the paired off positions for cash and simultaneously purchasing a similar TBA contract for a later settlement date. This transaction is commonly referred to as a “dollar roll.” The Agency MBS purchased or sold for a forward settlement date are typically priced at a discount to agency securities for settlement in the current month. This difference (or discount) is referred to as the “price drop.” The price drop represents compensation to us for foregoing net interest margin (interest income less repurchase agreement financing cost). TBA Agency MBS are accounted for as derivative instruments since they do not meet the exemption allowed for a “regular way” security trade under ASC 815, as either the TBA contracts do not settle in the shortest period of time possible or we cannot assess that it is probable at inception that we will take physical delivery of the security or that we will not settle on a net basis. Accounting for Derivative and Hedging Activities We account for derivative instruments in accordance with ASC 815, which requires recognition of all derivatives as either assets or liabilities and measurement of those instruments at fair value, which is typically based on values obtained from large financial institutions who are market makers for these types of instruments. The accounting for changes in the fair value of derivative instruments depends on whether the instruments are designated and qualify as hedges in accordance with ASC 815. Changes in fair value related to derivatives not designated as hedges are recorded in our consolidated statements of operations as “Gain (loss) on derivatives” and specifically identified as either relating to interest rate swaps or TBA Agency MBS. For a derivative to qualify for hedge accounting, we must anticipate that the hedge will be highly “effective” as defined by ASC 815‑10. A hedge of the variability of cash flows that are to be received or paid in connection with a recognized asset or liability is known as a “cash flow” hedge. Changes in the fair value of a derivative that is highly effective and that is designated as a cash flow hedge, to the extent the hedge is effective, are recorded in AOCI and reclassified to income when the forecasted transaction affects income (e.g. when periodic settlement interest payments are due on repurchase agreements). Hedge ineffectiveness, if any, is recorded in current period income. Fair value hedges protect against exposures to changes in the fair value of a recognized asset. ASC 815 requires companies to recognize in income, in the period that the changes in fair value occur, any gains or losses from any ineffectiveness in the hedging relationship. When we discontinue hedge accounting, the gain or loss on the derivative remains in AOCI and is reclassified into income when the forecasted transaction affects income. In all situations where hedge accounting is discontinued and the derivative remains outstanding, we carry the derivative at its fair value on our consolidated balance sheets, recognizing changes in fair value in current period income. All of our interest rate swaps had historically been accounted for as cash flow hedges under ASC 815. After August 22, 2014, none of our interest rate swaps were designated for hedge accounting. As a result of discontinuing hedge accounting for our interest rate swaps, changes in the fair value of these interest rate swaps are recorded in “(Loss) gain on derivatives, net” in our consolidated statements of operations rather than in AOCI. Also, net interest paid or received on these interest rate swaps, which was previously recognized in interest expense, is instead recognized in “(Loss) gain on derivatives, net.” These continue to be reported as assets or liabilities on our consolidated balance sheets at their fair value. As long as the forecasted transactions that were being hedged (i.e. rollovers of our repurchase agreement borrowings) are still expected to occur, the balance in AOCI from the activity in these interest rate swaps through the dates of de-designation will remain in AOCI and be recognized in our consolidated statements of operations as “interest expense” over the remaining term of these interest rate swaps. For purposes of the consolidated statements of cash flows, cash flows hedges were classified with the cash flows from the hedged item. Cash flows from derivatives that are not hedges are classified according to the underlying nature or purpose of the derivative transaction. For more details on the amounts and other qualitative information on all our derivative transactions, see Note 15, “Derivative Instruments.” For more information on the fair value of our derivative instruments, see Note 9, “Fair Values of Financial Instruments.”
Credit Risk	Credit Risk As of March 31, 2019, we had attempted to limit our exposure to credit losses on our Agency MBS by purchasing securities primarily through Freddie Mac and Fannie Mae. The payment of principal and interest on MBS issued by Freddie Mac and Fannie Mae MBS are guaranteed by those respective enterprises. In September 2008, both Freddie Mac and Fannie Mae were placed in the conservatorship of the U.S. government. While it is the intent that the conservatorship will help stabilize Freddie Mac’s and Fannie Mae’s overall financial position, there can be no assurance that it will succeed or that, if necessary, Freddie Mac and Fannie Mae will be able to satisfy their guarantees of Agency MBS. There have also been concerns as to what the U.S. government will do regarding winding-down the operations of Freddie Mac and Fannie Mae. There have also been concerns over the past several years regarding the credit standing of Freddie Mac, Fannie Mae, and U.S. sovereign debt. We do not know what effect any future ratings of Freddie Mac, Fannie Mae, and U.S. sovereign debt may ultimately have on the U.S. economy, the value of our securities, or the ability of Freddie Mac and Fannie Mae to satisfy its guarantees of Agency MBS, if necessary. Our adjustable-rate MBS are subject to periodic and lifetime interest rate caps. Periodic caps can limit the amount an interest rate can increase during any given period. Some adjustable-rate MBS that are subject to periodic payment caps may result in a portion of the interest being deferred and added to the principal outstanding. We also invest in Non-Agency MBS, which are securities that are secured by pools of residential mortgages that are not issued by government-sponsored enterprises and are not guaranteed by any agency of the U.S. government or any federally chartered corporation. Such investments carry a risk that the borrower on the underlying mortgage may default on their obligation to make full and timely payments of principal and interest. Other-than-temporary losses on our available-for-sale MBS, as measured by the amount of decline in estimated fair value attributable to credit losses that are considered to be other-than-temporary, are charged against income, resulting in an adjustment of the cost basis of such securities. Based on the criteria in ASC 320‑10, the determination of whether a security is other-than-temporarily impaired, or OTTI, involves judgments and assumptions based on both subjective and objective factors. When a security is impaired, an OTTI is considered to have occurred if (i) we intend to sell the security, (ii) it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis, or (iii) we do not expect to recover its amortized cost basis (i.e., there is a credit-related loss). The following are among, but not all of, the factors considered in determining whether and to what extent an OTTI exists and the portion that is related to credit loss: (i) the expected cash flow from the investment; (ii) whether there has been an other-than-temporary deterioration of the credit quality of the underlying mortgages; (iii) the credit protection available to the related mortgage pool for MBS; (iv) any other market information available, including analysts’ assessments and statements and public statements and filings made by the debtor or counterparty; (v) management’s internal analysis of the security, considering all known relevant information at the time of assessment; and (vi) the magnitude and duration of historical decline in market prices. Because management’s assessments are based on factual information as well as subjective information available at the time of assessment, the determination as to whether an other-than-temporary decline exists and, if so, the amount considered impaired, is also subjective, and therefore constitutes material estimates that are susceptible to significant change. We also own residential mortgage loans held-for-investment through consolidated securitization trusts. As the majority of these loans (the senior tranches of the securitization trusts) are collateral for the asset-backed securities issued by the trusts, our potential credit risk is on the subordinated tranches that we own, as these tranches would be the first ones to absorb any losses resulting from defaults by the borrowers on the underlying mortgage loans. For all interest rate swaps entered into on or after September 9, 2013, all swaps participants are required by rules of the Commodities Futures Trading Commission under the authority granted to it pursuant to the Dodd-Frank Wall Street Reform and Consumer Protection Act, or the Dodd-Frank Act, to clear interest rate swaps through a registered derivatives clearing organization, or “swap execution facility,” through standardized documents under which each swap counterparty transfers its position to another entity, whereby a central clearinghouse effectively becomes the counterparty on each side of the swap. It is the intent of the Dodd-Frank Act that the clearing of interest rate swaps in this manner is designed to avoid concentration of risk in any single entity by spreading and centralizing the risk in the clearinghouse and its members. Credit Risk Related to Residential Mortgage Loans Held-for-Securitization Our strategy of acquiring, accumulating, and securitizing residential mortgage loans involves credit risk. We bear the risk of loss on these loans while they are being financed through warehouse lines of credit. These loans are secured by real property. Credit losses on real estate loans can occur for many reasons, including poor origination practices; fraud; poor underwriting; poor servicing practices; weak economic conditions; increases in payments required to be made by the borrowers; declines in the value of real estate; natural disasters (such as fires or earthquake), severe weather (such as flooding, hurricanes, drought, and tornadoes) and other acts of God; uninsured property loss; over-leveraging of the borrower; costs of remediation of environmental conditions; acts of war or terrorism; changes in legal protections for lenders and other changes in law or regulation (including lending disclosures and privacy); and personal events affecting borrowers, such as reduction in income, changes in employment status (such as job loss), divorce, or health problems. In addition, if the U.S. economy or the housing market were to weaken (and that weakening was in excess of what we anticipated), credit losses could increase beyond levels that we have anticipated. In the event of a default on any of our loans, we would bear the loss equal to the difference between the realizable value of the mortgaged property, after expenses, and the outstanding indebtedness, as well as the loss of interest.
Income Taxes	Income Taxes We have elected to be taxed as a REIT and to comply with the provisions of the Code with respect thereto. Accordingly, we will not be subject to federal income tax to the extent that our distributions to our stockholders satisfy the REIT requirements and that certain asset, income, and stock ownership tests are met. We have no unrecognized tax benefits and do not anticipate any increase in unrecognized benefits during 2019 relative to any tax positions taken prior to January 1, 2019. Should the accrual of any interest or penalties relative to unrecognized tax benefits be necessary, it is our policy to record such accruals in our income taxes accounts, and no such accruals existed at March 31, 2019. We file REIT U.S. federal and California income tax returns. These returns are generally open to examination by the IRS and the California Franchise Tax Board for all years after 2014 and 2013, respectively.
Cumulative Convertible Preferred Stock	Cumulative Convertible Preferred Stock We classify our Series B Cumulative Convertible Preferred Stock, or Series B Preferred Stock, on our consolidated balance sheets using the guidance in ASC 480‑10‑S99. Our Series B Preferred Stock contains certain fundamental change provisions that allow the holder to redeem the preferred stock for cash only if certain events occur, such as a change in control. As redemption under these circumstances is not solely within our control, we have classified our Series B Preferred Stock as temporary equity. We have analyzed whether the conversion features in our Series B Preferred Stock should be bifurcated under the guidance in ASC 815‑10 and have determined that bifurcation is not necessary.
Stock-Based Expense	Stock-Based Expense In accordance with ASC 718‑10, any expense relating to share-based payment transactions is recognized in the unaudited consolidated financial statements. Restricted stock is expensed over the vesting period (see Note 14, “Equity Compensation Plan,” for more information).
Earnings Per Share	Earnings Per Share Basic earnings per share, or EPS, is computed by dividing net income available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted EPS assumes the conversion, exercise or issuance of all potential common stock equivalents (which includes stock options and convertible preferred stock) and the adding back of the Series B Preferred Stock dividends unless the effect is to reduce a loss or increase the income per share.
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income In accordance with ASC 220‑10‑55‑2, total comprehensive income is comprised of net income or net loss and other comprehensive income, which includes unrealized gains and losses on marketable securities classified as available-for-sale, and unrealized gains and losses on derivative financial instruments. In accordance with ASU 2013‑02, we have identified, in our consolidated statements of comprehensive income, items that are reclassified and included in our consolidated statements of operations.
Use of Estimates	USE OF ESTIMATES The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could materially differ from those estimates.
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS On February 25, 2016, the FASB issued ASU 2016‑2, “Leases” (Topic 842), which is intended to improve financial reporting for lease transactions. This ASU requires organizations that lease assets, such as real estate, airplanes, and manufacturing equipment, to recognize on their balance sheet the assets and liabilities for the rights to use those assets for the lease term and obligations to make lease payments created by those leases that have terms of greater than 12 months. The recognition, measurement, and presentation of expenses and cash flows arising from a lease by a lessee primarily depends on its classification as a finance or operating lease. This ASU also requires disclosures to help investors and other financial statement users better understand the amount and timing of cash flows arising from leases. These disclosures include qualitative and quantitative requirements, providing additional information about the amounts recorded in the financial statements. This ASU became effective for public entities beginning with the quarter ended March 31, 2019, and we have adopted it. The Company has elected the practical expedients allowed under this ASU. This ASU did not have a material impact on our consolidated financial statements, as we do not have any finance leases and our only operating lease is for the sublease of our headquarters. Also, with respect to the small portion of our business in which we are a lessor of rental properties, this ASU is not applicable to this portion of our business, as all of our leases are for less than one year. On June 16, 2016, the FASB issued ASU 2016‑13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, held-to-maturity debt securities, and reinsurance receivables. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor. The scope excludes financial assets measured at fair value through net income, available-for-sale securities, loans made to participants by defined contribution employee benefit plans, policy loan receivables of an insurance company, pledge receivables of a not-for-profit entity, and receivables between entities under common control. This ASU will require entities to immediately record the full amount of credit losses that are expected in their loan portfolios and to re-evaluate at each reporting period. The income statement will reflect the credit loss provision (or expense) necessary to adjust the allowance estimate since the previous reporting date. The expected credit loss estimate should consider available information relevant to assessing the collectability of contractual cash flows including information about past events (i.e. historical loss experience), current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. This ASU will become effective for public entities beginning with the quarter ending March 31, 2020. Although, at this time, we are not able to measure the impact that this ASU will have on our consolidated financial statements, we believe that when implemented, while not having a significant impact on the losses incurred over the life of the loans, it is likely that credit losses will be recognized through the allowance account sooner than previously required. In June 2018, the FASB issued ASU 2018-07, “Compensation–Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting.” This ASU expands the scope of Topic 718, which currently only includes share-based payments issued to employees, to also include share-based payments issued to nonemployees for goods and services. Currently, nonemployee awards are measured at the fair value of the consideration received or the fair value of the equity instruments issued, whichever can be more reliably measured. Under ASU 2018-07, equity-classified nonemployee awards within the scope of Topic 718 will be measured at grant-date fair value. This ASU became effective for public companies beginning with the quarter ended March 31, 2019. We have adopted this ASU and it did not have a material impact on our consolidated financial statements. In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820) – Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement.” The following disclosure requirements were removed: (1) The amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy; (2) The policy for timing of transfers between levels; and (3) The valuation processes for Level 3 fair value measurements. The following disclosure requirement was modified: The amendments clarify that the measurement uncertainty disclosure is to communicate information about the uncertainty in measurement as of the reporting date. The following disclosure requirements were added: (i) The changes in unrealized gains and losses for the period included in other comprehensive income for recurring Level 3 fair value measurements held at the end of the reporting period; and (ii) The range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements. For certain unobservable inputs, an entity may disclose other quantitative information in lieu of the weighted average if the entity determines that the other quantitative information would be a more reasonable and rational method to reflect the distribution of unobservable inputs used to develop Level 3 fair value measurements. This ASU will become effective for all entities beginning with the quarter ending March 31, 2020. We do not believe that this ASU will have a material impact on our consolidated financial statements.

Restricted Cash (Tables)

Restricted Cash (Tables)	3 Months Ended
	Mar. 31, 2019
Restricted Cash
Summary of Restricted Cash Balances	March 31, December 31, 2019 2018 (in thousands) Restricted cash - interest rate swaps and TBA Agency MBS margin calls $ 75,513 $ 30,296

Mortgage-Backed Securities (Tab

Mortgage-Backed Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Mortgage Backed Securities
Agency MBS and Non-Agency MBS, Which are Carried at Fair Value	March 31, 2019 Total Non-Agency Total By Agency Freddie Mac Fannie Mae Agency MBS (1) MBS MBS (in thousands) Amortized cost $ 1,742,468 $ 1,990,254 $ 3,732,722 $ 750,869 $ 4,483,591 Paydowns receivable (2) 10,503 — 10,503 — 10,503 Unrealized gains 10,641 13,935 24,576 26,412 50,988 Unrealized losses (11,413) (11,297) (22,710) (8,684) (31,394) Fair value $ 1,752,199 $ 1,992,892 $ 3,745,091 $ 768,597 $ 4,513,688 15-Year 20-Year 30-Year Total Non-Agency Total By Security Type ARMs Hybrids Fixed-Rate (1) Fixed-Rate (1) Fixed-Rate (1) Agency MBS MBS MBS (in thousands) Amortized cost $ 784,033 $ 630,863 $ 351,074 $ 364,943 $ 1,601,809 $ 3,732,722 $ 750,869 $ 4,483,591 Paydowns receivable (2) 4,802 5,701 — — — 10,503 — 10,503 Unrealized gains 10,902 417 650 281 12,326 24,576 26,412 50,988 Unrealized losses (1,074) (11,149) (3,300) (4,074) (3,113) (22,710) (8,684) (31,394) Fair value $ 798,663 $ 625,832 $ 348,424 $ 361,150 $ 1,611,022 $ 3,745,091 $ 768,597 $ 4,513,688 (1) Included in the fixed-rate MBS are Trading Agency MBS. These have an amortized cost of $446.4 million, an unrealized loss of $1.0 million, and a fair value of $445.4 million. (2) Paydowns receivable on Agency MBS are generated when the Company receives notice from Freddie Mac of prepayments but does not receive the actual cash with respect to such prepayments until the 15th day of the following month. During the three months ended March 31, 2019, we sold approximately $903.8 million of Agency MBS and realized gross losses of approximately $8.8 million and a gross gain of approximately $2.6 million. During the three months ended March 31, 2018, we sold approximately $583.2 million of Agency MBS and realized gross losses of approximately $19.3 million. During the three months ended March 31, 2019, Non-Agency bonds of approximately $20 million were called, and we realized a gross gain of approximately $22 thousand. During the three months ended March 31, 2018, we sold approximately $5.8 million of Non-Agency MBS and recognized gross losses of approximately $42 thousand. During the three months ended March 31, 2019, we had unrealized gains on trading investments of $14.9 million. During the three months ended March 31, 2018, we had gross unrealized losses on trading investments of approximately $8.9 million. December 31, 2018 Total Non-Agency Total By Agency Freddie Mac Fannie Mae Agency MBS (1) MBS MBS (in thousands) Amortized cost $ 1,457,552 $ 2,127,655 $ 3,585,207 $ 785,640 $ 4,370,847 Paydowns receivable (2) 7,831 — 7,831 — 7,831 Unrealized gains 4,169 10,827 14,996 20,753 35,749 Unrealized losses (25,155) (34,160) (59,315) (11,190) (70,505) Fair value $ 1,444,397 $ 2,104,322 $ 3,548,719 $ 795,203 $ 4,343,922 Total 15-Year 20-Year 30-Year Agency Non-Agency Total By Security Type ARMs Hybrids Fixed-Rate (1) Fixed-Rate Fixed-Rate MBS MBS MBS (in thousands) Amortized cost $ 854,733 $ 689,694 $ 917,780 $ 374,792 $ 748,208 $ 3,585,207 $ 785,640 $ 4,370,847 Paydowns receivable (2) 4,065 3,766 — — — 7,831 — 7,831 Unrealized gains 11,920 263 60 — 2,753 14,996 20,753 35,749 Unrealized losses (1,250) (15,786) (25,389) (8,290) (8,600) (59,315) (11,190) (70,505) Fair value $ 869,468 $ 677,937 $ 892,451 $ 366,502 $ 742,361 $ 3,548,719 $ 795,203 $ 4,343,922 (1) Included in the 15-year fixed-rate MBS are Trading Agency MBS. These have an amortized cost of $496.7 million, an unrealized loss of $15.9 million, and a fair value of $480.8 million. Paydowns receivable on Agency MBS are generated when the Company receives notice from Freddie Mac of prepayments but does not receive the actual cash with respect to such prepayments until the 15th day of the following month.
Estimates of Contractually Required Payments Expected to be Collected and Fair Value	Change During the Three Months Ended At At March 31, March 31, December 31, 2019 2019 2018 (in thousands) Non-Agency MBS acquired with credit deterioration: Contractually required principal $ (18,836) $ 801,772 $ 820,608 Contractual principal not expected to be collected (non-accretable yield) 5,273 (327,613) (332,886) Expected cash flows to be collected (13,563) 474,159 487,722 Market yield adjustment (1,669) 135,568 137,237 Unrealized gain, net 6,648 17,076 10,428 Fair value (8,584) 626,803 635,387 Fair value of other Non-Agency MBS (without credit deterioration) (18,022) 141,794 159,816 Total fair value of Non-Agency MBS $ (26,606) $ 768,597 $ 795,203
Schedule of Components of Purchase Discount on its Non-Agency MBS	Three Months Ended March 31, 2019 Market Yield Non- Adjustment Accretable (in thousands) Balance at beginning of period $ 137,237 $ (332,886) Accretion of discount (1,669) — Purchases — — Realized credit losses — 5,273 Sales — — Impairment charge — — Transfer — — Other — — Balance at end of period $ 135,568 $ (327,613)
Investments' Gross Unrealized Losses and Fair Value of Securities in Continuous Unrealized Loss Position, Aggregated by Investment Category and Length of Time	March 31, 2019 Less Than 12 Months 12 Months or More Total Description Number Number Number of of Fair Unrealized of Fair Unrealized of Fair Unrealized Securities Securities Value Losses Securities Value Losses Securities Value Losses (in thousands) (in thousands) (in thousands) Agency MBS 15 $ 190,147 $ (526) 148 $ 1,156,763 $ (19,843) 163 $ 1,346,910 $ (20,369) Non-Agency MBS 36 $ 204,872 $ (3,523) 13 $ 73,560 $ (5,161) 49 $ 278,432 $ (8,684) December 31, 2018 Less Than 12 Months 12 Months or More Total Description Number Number Number of of Fair Unrealized of Fair Unrealized of Fair Unrealized Securities Securities Value Losses Securities Value Losses Securities Value Losses (in thousands) (in thousands) (in thousands) Agency MBS 47 $ 859,060 $ (6,484) 166 $ 1,301,348 $ (36,937) 213 $ 2,160,408 $ (43,421) Non-Agency MBS 56 $ 329,108 $ (5,886) 12 $ 72,514 $ (5,304) 68 $ 401,622 $ (11,190)

Residential Mortgage Loans He_2

Residential Mortgage Loans Held-For-Securitization (Tables)	3 Months Ended
	Mar. 31, 2019
Residential Mortgage Loans Held-For-Securitization
Summary of Residential Mortgage Loans Held-for-Investment	March 31, December 31, 2019 2018 (in thousands) Principal balance $ 126,189 $ 11,281 Unamortized premium and costs, net of discount 3,394 379 Carrying value $ 129,583 $ 11,660
Summary of Reconciliation of Carrying Value of Residential Mortgage Loans Held-for-Investment	For the Year March 31, December 31, 2019 2018 (in thousands) Balance at beginning of period $ 11,660 $ — Loan acquisitions 118,765 11,660 Deductions during period: Collections of principal (816) — Amortization of premium (26) — Balance at end of period $ 129,583 $ 11,660
Summary of Portfolio Characteristics of Residential Mortgage Loans Held-for-Investment	March 31, December 31, 2019 2018 (dollar amounts in thousands) Portfolio Characteristics: 12-months bank statements 5 2 24-months bank statements 21 17 Alt documentation 235 — Full documentation 5 2 Paid in full — 1 Number of loans 266 22 Current principal balance $ 126,189 $ 11,281 Average loan balance $ 474 $ 513 Net weighted average coupon rate 5.56 % 5.95 % Weighted average FICO score 745 722 Weighted average LTV (loan-to-value) 69 77 Weighted average DTI (debt-to-income) 39 40 Performance: Current 126,189 11,281 Total $ 126,189 $ 11,281
Summary of Geographic Concentrations of Residential Mortgage Loans Held-for-Investment	March 31, December 31, State 2019 2018 California 81 % 49 % Florida 6 43 Texas 3 5 Other states (none greater than 5%) 10 3 Total 100 % 100 %

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2019
Summary of Residential Mortgage Loans Held-for-Investment	March 31, December 31, 2019 2018 (in thousands) Principal balance $ 126,189 $ 11,281 Unamortized premium and costs, net of discount 3,394 379 Carrying value $ 129,583 $ 11,660
Summary of Reconciliation of Carrying Value of Residential Mortgage Loans Held-for-Investment	For the Year March 31, December 31, 2019 2018 (in thousands) Balance at beginning of period $ 11,660 $ — Loan acquisitions 118,765 11,660 Deductions during period: Collections of principal (816) — Amortization of premium (26) — Balance at end of period $ 129,583 $ 11,660
Summary of Portfolio Characteristics of Residential Mortgage Loans Held-for-Investment	March 31, December 31, 2019 2018 (dollar amounts in thousands) Portfolio Characteristics: 12-months bank statements 5 2 24-months bank statements 21 17 Alt documentation 235 — Full documentation 5 2 Paid in full — 1 Number of loans 266 22 Current principal balance $ 126,189 $ 11,281 Average loan balance $ 474 $ 513 Net weighted average coupon rate 5.56 % 5.95 % Weighted average FICO score 745 722 Weighted average LTV (loan-to-value) 69 77 Weighted average DTI (debt-to-income) 39 40 Performance: Current 126,189 11,281 Total $ 126,189 $ 11,281
Summary of Geographic Concentrations of Residential Mortgage Loans Held-for-Investment	March 31, December 31, State 2019 2018 California 81 % 49 % Florida 6 43 Texas 3 5 Other states (none greater than 5%) 10 3 Total 100 % 100 %
Variable Interest Entities Primary Beneficiary
Summary of Assets and Liabilities of Variable Interest Entities	March 31, December 31, 2019 2018 (in thousands) Residential mortgage loans held-for-investment through consolidated securitization trusts $ 535,077 $ 549,016 Accrued interest receivable 1,752 1,792 Total assets $ 536,829 $ 550,808 Accrued interest payable $ 1,707 $ 1,746 Asset-backed securities issued by securitization trusts 525,712 539,651 Total liabilities $ 527,419 $ 541,397
Summary of Residential Mortgage Loans Held-for-Investment	The following table details the carrying value for residential mortgage loans held-for-investment through consolidated securitization trusts at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (in thousands) Principal balance $ 532,361 $ 545,881 Unamortized premium, net of discount 2,891 3,321 Allowance for loan losses (175) (186) Carrying value $ 535,077 $ 549,016
Summary of Reconciliation of Carrying Value of Residential Mortgage Loans Held-for-Investment	The following table provides a reconciliation of the carrying value of residential mortgage loans held-for-investment through consolidated securitization trusts for the three months ended March 31, 2019 and March 31, 2018 and for the year ended December 31, 2018: Three Months Three Months For the Year Ended Ended Ended March 31, March 31, December 31, 2019 2018 2018 (in thousands) Balance at beginning of period $ 549,016 $ 639,351 $ 639,351 Loan acquisitions — — — Deductions during period: Collections of principal (13,520) (27,813) (88,338) Amortization of premium (430) (549) (2,014) Charge-offs, net 11 17 17 Balance at end of period $ 535,077 $ 611,006 $ 549,016
Summary of Portfolio Characteristics of Residential Mortgage Loans Held-for-Investment	The following table details various portfolio characteristics of the residential mortgage loans held-for-investment through consolidated securitization trusts at March 31, 2019 and December 31, 2018: March 31, December 31, 2019 2018 (dollar amounts in thousands) Portfolio Characteristics: Number of loans 817 829 Current principal balance $ 532,361 $ 545,881 Average loan balance $ 652 $ 658 Net weighted average coupon rate 3.86 % 3.85 % Weighted average maturity (years) 25.0 25.3 Weighted average FICO score 761 761 Current Performance: Current $ 529,256 $ 543,328 30 days delinquent 1,169 — 60 days delinquent 891 896 90+ days delinquent 454 1,066 Bankruptcy/foreclosure 591 591 Total $ 532,361 $ 545,881
Summary of Geographic Concentrations of Residential Mortgage Loans Held-for-Investment	March 31, December 31, State 2019 2018 California 43 % 43 % Florida 7 7 Other states (none greater than 5%) 50 50 Total 100 % 100 %
Summary of Activity in Allowance for Loan Losses	The following table summarizes the activity in the allowance for loan losses for the three months ended March 31, 2019 and March 31, 2018 and for the year ended December 31, 2018: Three Months Three Months For the Year Ended Ended Ended March 31, March 31, December 31, 2019 2018 2018 (in thousands) Balance at beginning of period $ 186 $ 203 $ 203 Provision for loan losses — — — Charge-offs, net (11) (17) (17) Balance at end of period $ 175 $ 186 $ 186

Short-Term Debt (Tables)

Short-Term Debt (Tables)	3 Months Ended
	Mar. 31, 2019
Repurchase Agreements
Repurchase Agreements Balances, Weighted Average Interest Rates and Remaining Weighted Average Maturities	Repurchase Agreements At March 31, 2019 and December 31, 2018, the repurchase agreements had the following balances, weighted average interest rates, and remaining weighted average maturities: March 31, 2019 Agency MBS Non-Agency MBS Total MBS Weighted Weighted Weighted Average Average Average Interest Interest Interest Balance Rate Balance Rate Balance Rate (in thousands) (in thousands) (in thousands) Overnight $ 15,000 2.50 % $ — — % $ 15,000 2.50 % Less than 30 days 1,800,000 2.69 545,634 3.60 2,345,634 2.91 30 days to 90 days 1,400,000 2.66 — — 1,400,000 2.66 Over 90 days — — — — — — Demand — — — — — — $ 3,215,000 2.68 % $ 545,634 3.60 % $ 3,760,634 2.81 % Weighted average maturity 33 days 18 days 31 days Weighted average interest rate after adjusting for interest rate swaps 2.32 % Weighted average maturity after adjusting for interest rate swaps 1,222 days MBS pledged as collateral under the repurchase agreements and interest rate swaps $ 3,421,455 $ 700,391 $ 4,121,846 December 31, 2018 Agency MBS Non-Agency MBS Total MBS Weighted Weighted Weighted Average Average Average Interest Interest Interest Balance Rate Balance Rate Balance Rate (in thousands) (in thousands) (in thousands) Overnight $ — — % $ — — % $ — — % Less than 30 days 1,510,000 2.46 576,627 3.55 2,086,627 2.76 30 days to 90 days 1,725,000 2.57 — — 1,725,000 2.57 Over 90 days — — — — — — Demand — — — — — — $ 3,235,000 2.52 % $ 576,627 3.55 % $ 3,811,627 2.67 % Weighted average maturity 35 days 13 days 32 days Weighted average interest rate after adjusting for interest rate swaps 2.23 % Weighted average maturity after adjusting for interest rate swaps 1,217 days MBS pledged as collateral under the repurchase agreements and interest rate swaps $ 3,433,252 $ 726,428 $ 4,159,680
Liabilities and Assets Subject to Netting Arrangements	March 31, 2019 Net Amounts of Assets Gross Amounts Not Offset Gross Amounts or Liabilities in the Balance Sheets (1) of Recognized Gross Amounts Presented in Cash Assets or Offset in the the Balance Financial Collateral Net Liabilities Balance Sheets Sheets Instruments Received Amounts (in thousands) Derivative assets at fair value (2) $ 27,396 $ — $ 27,396 $ (27,396) $ 5,238 $ (22,158) Total $ 27,396 $ — $ 27,396 $ (27,396) $ 5,238 $ (22,158) Repurchase agreements (3) $ 3,760,634 $ — $ 3,760,634 $ (3,760,634) $ — $ — Warehouse line of credit (4) 15,442 — 15,442 (15,442) — — Derivative liabilities at fair value (2) 36,261 — 36,261 (36,261) — — Total $ 3,812,337 $ — $ 3,812,337 $ (3,812,337) $ — $ — (1) Amounts presented are limited to collateral pledged sufficient to reduce the related net amount to zero in accordance with ASU No. 2011‑11, as amended by ASU No. 2013‑01. (2) At March 31, 2019, we had not pledged any Agency MBS as collateral on our interest rate swaps derivatives. We paid approximately $75.5 million in cash margin calls on our derivatives, which is reflected on our consolidated balance sheets as “Restricted cash,” and we received cash from counterparties of approximately $5.2 million, which is reflected as a liability on our consolidated balance sheets as “derivative counterparty margin.” Our interest rate swaps derivatives were approximately $23.0 million in derivative assets and approximately $36.3 million in derivative liabilities at March 31, 2019. (3) At March 31, 2019, we had pledged approximately $3.42 billion in Agency MBS and approximately $700.4 million in Non-Agency MBS as collateral on our repurchase agreements. (4) At March 31, 2019, we had pledged approximately $17.2 million in residential mortgage loans on the warehouse line of credit. December 31, 2018 Net Amounts of Assets Gross Amounts Not Offset Gross Amounts or Liabilities in the Balance Sheets (1) of Recognized Gross Amounts Presented in Cash Assets or Offset in the the Balance Financial Collateral Net Liabilities Balance Sheets Sheets Instruments Received Amounts (in thousands) Derivative assets at fair value (2) $ 46,207 $ — $ 46,207 $ (46,207) $ — $ — Total $ 46,207 $ — $ 46,207 $ (46,207) $ — $ — Repurchase agreements (3) $ 3,811,627 $ — $ 3,811,627 $ (3,811,627) $ — $ — Derivative liabilities at fair value (2) 15,901 — 15,901 (15,901) — — Total $ 3,827,528 $ — $ 3,827,528 $ (3,827,528) $ — $ — (1) Amounts presented are limited to collateral pledged sufficient to reduce the related net amount to zero in accordance with ASU No. 2011‑11, as amended by ASU No. 2013‑01. (2) At December 31, 2018, we had paid approximately $30.3 million on swap and TBA Agency MBS margin calls (included in “restricted cash). Our swap derivatives were approximately $40.2 million in derivative assets and approximately $15.9 million in derivative liabilities at December 31, 2018. (3) At December 31, 2018, we had pledged $3.43 billion in Agency MBS and approximately $726.4 million in Non-Agency MBS as collateral on our repurchase agreements.

Fair Values of Financial Inst_2

Fair Values of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Fair Values of Financial Instruments
Fair Value Measurements on Recurring Basis	At March 31, 2019, fair value measurements on a recurring basis were as follows: Level 1 Level 2 Level 3 Total (in thousands) Assets: Agency MBS (1) $ — $ 3,745,091 $ — $ 3,745,091 Non-Agency MBS (1) $ — $ 768,597 $ — $ 768,597 Derivative instruments (2) $ — $ 27,396 $ — $ 27,396 Liabilities: Derivative instruments (2) $ — $ 36,261 $ — $ 36,261 Payable for purchased MBS (1) $ — $ 227,997 $ — $ 227,997 (1) For more detail about the fair value of our MBS by agency and type of security, see Note 3, “Mortgage-Backed Securities.” (2) Derivative instruments include discontinued hedges under ASC 815‑10. For more detail about our derivative instruments, see Note 1, “Organization and Significant Accounting Policies,” and Note 15, “Derivative Instruments.” At December 31, 2018, fair value measurements on a recurring basis were as follows: Level 1 Level 2 Level 3 Total (in thousands) Assets: Agency MBS (1) $ — $ 3,548,719 $ — $ 3,548,719 Non-Agency MBS (1) $ — $ 795,203 $ — $ 795,203 Derivative instruments (2) $ — $ 46,207 $ — $ 46,207 Liabilities: Derivative instruments (2) $ — $ 15,901 $ — $ 15,901 (1) For more detail about the fair value of our MBS by agency and type of security, see Note 3, “Mortgage-Backed Securities.” (2) Derivative instruments include discontinued hedges under ASC 815‑10. For more detail about our derivative instruments, see Note 1, “Organization and Significant Accounting Policies,” and Note 14, “Equity Compensation Plan.”
Carrying Value and Estimated Fair Value of Financial Instruments	The following table presents the carrying value and estimated fair value of the Company’s financial instruments that are not carried at fair value on our consolidated balance sheets at March 31, 2019 and December 31, 2018: March 31, 2019 December 31, 2018 Carrying Estimated Carrying Estimated Value Fair Value Value Fair Value (in thousands) Financial Assets: Residential mortgage loans held-for-investment through consolidated securitization trusts $ 535,077 $ 531,723 $ 549,016 $ 538,362 Residential mortgage loans held-for-securitization $ 129,583 $ 129,583 $ 11,660 $ 11,660 Financial Liabilities: Asset-backed securities issued by securitization trusts $ 525,712 $ 521,201 $ 539,651 $ 528,045 Warehouse line of credit $ 15,442 $ 15,442 $ — $ — Payable for purchased loans $ 112,316 $ 112,316 $ — $ —

Transactions with Affiliates (T

Transactions with Affiliates (Tables)	3 Months Ended
	Mar. 31, 2019
Transactions with Affiliates
Future Minimum Lease Commitment	At March 31, 2019, the future minimum lease commitment was as follows: Total 2019 2020 2021 2022 Commitment (in whole dollars) Commitment (undiscounted cash flows) $ 387,679 $ 529,800 $ 545,697 $ 276,882 $ 1,740,058 Discounted cash flows on the lease commitment (1) $ 381,947 $ 513,143 $ 515,623 $ 257,305 $ 1,668,018 (1) The difference between the total commitment amount and the amount on the consolidated balance sheets is due to the amortization of the lease asset and lease liability being done on a straight-line basis rather than by the discounted cash flows.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2019
Derivative Instruments
Fair Value of Derivative Instruments	The table below presents the fair value of our derivative instruments as well as their classification in our consolidated balance sheets as of March 31, 2019 and December 31, 2018: March 31, December 31, Derivative Instruments Balance Sheet Location 2019 2018 (in thousands) Interest rate swaps Derivative Assets $ 22,974 $ 40,192 TBA Agency MBS Derivative Assets 4,422 6,015 $ 27,396 $ 46,207 Interest rate swaps Derivative Liabilities $ 36,261 $ 15,901 TBA Agency MBS Derivative Liabilities — — $ 36,261 $ 15,901
Notional Amounts of Swap Agreement, Weighted Average Fixed Rates and Remaining Terms	At March 31, 2019 and December 31, 2018, our interest rate swaps had the following notional amounts, weighted average fixed rates, and remaining terms: March 31, 2019 December 31, 2018 Weighted Weighted Average Remaining Average Remaining Notional Fixed Term in Notional Fixed Term in Maturity Amount Rate Months Amount Rate Months (in thousands) (in thousands) Less than 1 year $ 650,000 1.61 % 6 $ 725,000 1.60 % 7 1 year to 2 years 666,000 1.76 18 591,000 1.70 19 2 years to 3 years 300,000 1.87 30 400,000 1.96 30 3 years to 4 years 270,000 2.09 44 220,000 1.92 43 4 years to 5 years 355,000 2.39 57 205,000 2.27 57 5 years to 7 years 525,000 2.48 75 475,000 2.41 73 7 years to 10 years 590,000 2.82 104 690,000 2.83 104 $ 3,356,000 2.13 % 47 $ 3,306,000 2.10 % 47
Swap Agreements by Counterparty	March 31, December 31, 2019 2018 (in thousands) Central clearing houses (1) $ 3,356,000 $ 3,306,000 For all interest rate swaps entered into after September 9, 2013, the counterparty will be central clearing houses, such as the CME or LCH, regardless of who the trading party is. See the section entitled “Derivative Financial Instruments – Interest Rate Risk Management” in Note 1, “Organization and Significant Accounting Policies,” for additional details.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2019
Earnings Per Share [Abstract]
Computation of Earnings Per Share	Net (Loss) to Common Average (Loss) Stockholders Shares per Share (in thousands) For the three months ended March 31, 2019 Basic EPS $ (22,267) 98,537 $ (0.23) Effect of dilutive securities — — — Diluted EPS $ (22,267) 98,537 $ (0.23) For the three months ended March 31, 2018 Basic EPS $ (5,150) 98,185 $ (0.05) Effect of dilutive securities — — — Diluted EPS $ (5,150) 98,185 $ (0.05)

Organization and Significant _3

Organization and Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
Description of management fee	In exchange for services provided, our Manager receives a management fee, paid monthly in arrears, in an amount equal to one-twelfth of 1.20% of our Equity (as defined in the Management Agreement).
Annual management fee as a percent of equity	1.20%
Building Estimated Useful Life	27 years 6 months
Building Salvage Value	$ 0
Unrecognized tax benefits	0
Unrecognized tax benefits, accrued interest or penalties	$ 0
Minimum | Agency MBS
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
MBS initial fixed interest rate required, period	1 year
Maximum | Agency MBS
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]
MBS initial fixed interest rate required, period	10 years

Restricted Cash - Summary of Re

Restricted Cash - Summary of Restricted Cash Balances (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 75,513	$ 30,296
Swap Margin Calls
Restricted Cash And Cash Equivalents Items [Line Items]
Restricted cash	$ 75,513	$ 30,296

Agency MBS and Non-Agency MBS,

Agency MBS and Non-Agency MBS, which are Carried at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Fair value	$ 768,597	$ 795,203
Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	3,732,722	3,585,207
Paydowns receivable	10,503	7,831
Unrealized gains	24,576	14,996
Unrealized losses	(22,710)	(59,315)
Available-for-sale Securities, Total	3,745,091	3,548,719
Agency MBS | 15-Year Fixed-Rate
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	351,074	917,780
Unrealized gains	650	60
Unrealized losses	(3,300)	(25,389)
Available-for-sale Securities, Total	348,424	892,451
Agency MBS | 20-Year Fixed-Rate
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	364,943	374,792
Unrealized gains	281
Unrealized losses	(4,074)	(8,290)
Available-for-sale Securities, Total	361,150	366,502
Agency MBS | 30-Year Fixed-Rate
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	1,601,809	748,208
Unrealized gains	12,326	2,753
Unrealized losses	(3,113)	(8,600)
Available-for-sale Securities, Total	1,611,022	742,361
Agency MBS | Freddie Mac
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	1,742,468	1,457,552
Paydowns receivable	10,503	7,831
Unrealized gains	10,641	4,169
Unrealized losses	(11,413)	(25,155)
Available-for-sale Securities, Total	1,752,199	1,444,397
Agency MBS | Fannie Mae
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	1,990,254	2,127,655
Unrealized gains	13,935	10,827
Unrealized losses	(11,297)	(34,160)
Available-for-sale Securities, Total	1,992,892	2,104,322
Agency MBS | ARMs
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	784,033	854,733
Paydowns receivable	4,802	4,065
Unrealized gains	10,902	11,920
Unrealized losses	(1,074)	(1,250)
Available-for-sale Securities, Total	798,663	869,468
Agency MBS | Hybrids
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	630,863	689,694
Paydowns receivable	5,701	3,766
Unrealized gains	417	263
Unrealized losses	(11,149)	(15,786)
Available-for-sale Securities, Total	625,832	677,937
MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	4,483,591	4,370,847
Paydowns receivable	10,503	7,831
Unrealized gains	50,988	35,749
Unrealized losses	(31,394)	(70,505)
Available-for-sale Securities, Total	4,513,688	4,343,922
Non-Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	750,869	785,640
Unrealized gains	26,412	20,753
Unrealized losses	(8,684)	(11,190)
Fair value	$ 768,597	$ 795,203

Agency MBS and Non-Agency MBS_2

Agency MBS and Non-Agency MBS, which are Carried at Fair Value (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Unrealized gain (loss) on trading investments	$ (14,900)	$ 8,900
Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	3,732,722		$ 3,585,207
Unrealized gain (loss) on trading investments	14,906	$ (8,890)
Agency MBS | Trading Securities
Schedule Of Available For Sale Securities [Line Items]
Unrealized gain (loss) on trading investments	(1,000)		(15,900)
Non-Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	750,869		785,640
15-Year Fixed-Rate | Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	351,074		$ 917,780
15-Year Fixed-Rate | Agency MBS | Trading Securities
Schedule Of Available For Sale Securities [Line Items]
Fair value fixed rate period			15 years
Amortized cost	446,400		$ 496,700
Unrealized gain (loss) on trading investments	(1,000)		15,900
Trading investments	$ 445,400		$ 480,800

Mortgage-Backed Securities - Ad

Mortgage-Backed Securities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Sale of securities	$ 903,822	$ 589,073
Unrealized gain (loss) on trading investments	(14,900)	8,900
Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Sale of securities	903,800	583,200
Gross realized losses on sales of securities	8,800	19,300
Gross realized gains on sales of securities	2,600
Unrealized gain (loss) on trading investments	14,906	(8,890)
Non-Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Sale of securities	20,000	5,800
Gross realized losses on sales of securities		$ 42
Gross realized gains on sales of securities	22
Trading Securities | Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Unrealized gain (loss) on trading investments	$ (1,000)		$ (15,900)

Estimates of Contractually Requ

Estimates of Contractually Required Payments Expected to be Collected and Fair Value (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Non-Agency MBS acquired with credit deterioration:
Total fair value of Non-Agency MBS	$ 768,597	$ 795,203
Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Period Increase Decrease	(26,606)
Non-Agency MBS
Non-Agency MBS acquired with credit deterioration:
Contractually required principal	801,772	820,608
Contractual principal not expected to be collected (non-accretable yield)	(327,613)	(332,886)
Expected cash flows to be collected	474,159	487,722
Market yield adjustment	135,568	137,237
Unrealized gain, net	17,076	10,428
Fair value	626,803	635,387
Fair value of other Non-Agency MBS (without credit deterioration)	141,794	159,816
Total fair value of Non-Agency MBS	768,597	$ 795,203
Contractually required principal	(18,836)
Contractual principal not expected to be collected (non-accretable yield)	5,273
Expected cash flows to be collected	(13,563)
Market yield adjustment	(1,669)
Unrealized gain, net	6,648
Fair value	(8,584)
Fair value of other Non-Agency MBS (without credit deterioration)	$ (18,022)

Schedule of Components of Purch

Schedule of Components of Purchase Discount on its Non-Agency MBS (Detail) - Non-Agency MBS $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Market Yield Adjustment
Schedule Of Available For Sale Securities [Line Items]
Balance, beginning of period	$ 137,237
Accretion of discount	(1,669)
Balance, end of period	135,568
Non-Accretable Discount
Schedule Of Available For Sale Securities [Line Items]
Balance, beginning of period	(332,886)
Realized credit losses, net of recoveries	5,273
Balance, end of period	$ (327,613)

Mortgage-Backed Securities - Co

Mortgage-Backed Securities - Continuous Unrealized Loss Position (Detail) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)item	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)item
Schedule Of Available For Sale Securities [Line Items]
Unrealized gain (loss) on trading investments	$ (14,900)	$ 8,900
Impairment charge		18
Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months Number of Securities | item	15		47
Less Than 12 Months Fair Value	$ 190,147		$ 859,060
Less Than 12 Months Unrealized Losses	$ (526)		$ (6,484)
12 Months or More Number of Securities | item	148		166
12 Months or More Fair Value	$ 1,156,763		$ 1,301,348
12 Months or More Unrealized Losses	$ (19,843)		$ (36,937)
Total Number of Securities | item	163		213
Total Fair Value	$ 1,346,910		$ 2,160,408
Total Unrealized Losses	(20,369)		$ (43,421)
Unrealized gain (loss) on trading investments	$ 14,906	$ (8,890)
Non-Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Less Than 12 Months Number of Securities | item	36		56
Less Than 12 Months Fair Value	$ 204,872		$ 329,108
Less Than 12 Months Unrealized Losses	$ (3,523)		$ (5,886)
12 Months or More Number of Securities | item	13		12
12 Months or More Fair Value	$ 73,560		$ 72,514
12 Months or More Unrealized Losses	$ (5,161)		$ (5,304)
Total Number of Securities | item	49		68
Total Fair Value	$ 278,432		$ 401,622
Total Unrealized Losses	(8,684)		(11,190)
Trading Securities | Agency MBS
Schedule Of Available For Sale Securities [Line Items]
Unrealized gain (loss) on trading investments	$ (1,000)		$ (15,900)

Residential Mortgage Loans He_3

Residential Mortgage Loans Held-For-Securitization - Carrying Value for Residential Mortgage Loans (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Carrying value	[1]	$ 535,077	$ 549,016
Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Principal balance		126,189	11,281
Unamortized premium, net of discount		3,394	379
Carrying value		$ 129,583	$ 11,660
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Residential Mortgage Loans He_4

Residential Mortgage Loans Held-For-Securitization - Summary of Reconciliation of Carrying Value of Residential Mortgage Loans (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Balance at beginning of period	[1]	$ 549,016
Deductions during period:
Balance at end of period	[1]	535,077	$ 549,016
Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Balance at beginning of period		11,660
Additions during period:
Loan acquisitions		118,765	11,660
Deductions during period:
Collections of principal		(816)
Amortization of premium		(26)
Balance at end of period		$ 129,583	$ 11,660
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Residential Mortgage Loans He_5

Residential Mortgage Loans Held-For-Securitization - Summary of Residential Mortgage Loans Held-for-Investment (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)loan	Dec. 31, 2018USD ($)loan	Mar. 07, 2019USD ($)	Dec. 28, 2018USD ($)
Warehouse Line Facility
Performance:
Line of credit, maximum borrowing capacity | $	$ 300,000		$ 300,000	$ 100,000
Residential Mortgage Backed Securities
Portfolio Characteristics:
Number of loans	266	22
Current principal balance | $	$ 126,189	$ 11,281
Average loan balance | $	$ 474	$ 513
Net weighted average coupon rate	5.56%	5.95%
Weighted average FICO score	745	722
Performance:
Current | $	$ 126,189	$ 11,281
Total | $	$ 126,189	$ 11,281
Residential Mortgage Backed Securities | LTV
Portfolio Characteristics:
Weighted average LTV (loan-to-value)	69.00%	77.00%
Residential Mortgage Backed Securities | DTI
Portfolio Characteristics:
Weighted average DTI (debt-to-income)	39.00%	40.00%
Residential Mortgage Backed Securities | 12-months bank statements
Portfolio Characteristics:
Number of loans	5	2
Residential Mortgage Backed Securities | 24-months bank statements
Portfolio Characteristics:
Number of loans	21	17
Residential Mortgage Backed Securities | Alt documentation
Portfolio Characteristics:
Number of loans	235
Residential Mortgage Backed Securities | Full documentation
Portfolio Characteristics:
Number of loans	5	2
Residential Mortgage Backed Securities | Paid in full
Portfolio Characteristics:
Number of loans		1

Residential Mortgage Loans He_6

Residential Mortgage Loans Held-For-Securitization - Summary of Geographic Concentrations of Residential Mortgage Loans Held-for-Investment (Detail) - Geographic Concentration Risk - Residential Loans Held For Investment	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%
California
Concentration Risk [Line Items]
Concentration risk percentage	81.00%	49.00%
Florida
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	43.00%
Texas
Concentration Risk [Line Items]
Concentration risk percentage	3.00%	5.00%
Other states
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	3.00%

Variable Interest Entities - Su

Variable Interest Entities - Summary of Assets and Liabilities of Variable Interest Entities (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Residential mortgage loans held-for-investment	[1]	$ 535,077	$ 549,016
Accrued interest receivable		17,539	16,872
Accrued interest payable		16,084	24,828
Asset-backed securities issued by securitization trusts	[1]	525,712	539,651
Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Residential mortgage loans held-for-investment		129,583	11,660
Variable Interest Entities Primary Beneficiary
Variable Interest Entity [Line Items]
Accrued interest receivable		1,800	1,800
Accrued interest payable		1,700	1,700
Asset-backed securities issued by securitization trusts		525,700	539,700
Variable Interest Entities Primary Beneficiary | Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Residential mortgage loans held-for-investment		535,077	549,016	$ 611,006	$ 639,351
Accrued interest receivable		1,752	1,792
Total assets		536,829	550,808
Accrued interest payable		1,707	1,746
Asset-backed securities issued by securitization trusts		525,712	539,651
Total liabilities		$ 527,419	$ 541,397
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Variable Interest Entities - Ad

Variable Interest Entities - Additional Information (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
Asset-backed securities issued by securitization trusts	[1]	$ 525,712	$ 539,651
Variable Interest Entities Primary Beneficiary
Variable Interest Entity [Line Items]
Asset-backed securities issued by securitization trusts		$ 525,700	$ 539,700
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Variable Interest Entities - Ca

Variable Interest Entities - Carrying Value for Residential Mortgage Loans (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Carrying value	[1]	$ 535,077	$ 549,016
Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Principal balance		126,189	11,281
Unamortized premium, net of discount		3,394	379
Carrying value		129,583	11,660
Variable Interest Entities Primary Beneficiary | Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Principal balance		532,361	545,881
Unamortized premium, net of discount		2,891	3,321
Allowance for loan losses		(175)	(186)	$ (186)	$ (203)
Carrying value		$ 535,077	$ 549,016	$ 611,006	$ 639,351
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Variable Interest Entities - _2

Variable Interest Entities - Summary of Reconciliation of Carrying Value of Residential Mortgage Loans (Detail) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Balance at beginning of period	[1]	$ 549,016
Deductions during period:
Balance at end of period	[1]	535,077		$ 549,016
Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Balance at beginning of period		11,660
Loan acquisitions		118,765		11,660
Deductions during period:
Collections of principal		(816)
Amortization of premium		(26)
Balance at end of period		129,583		11,660
Variable Interest Entities Primary Beneficiary | Residential Mortgage Backed Securities
Variable Interest Entity [Line Items]
Balance at beginning of period		549,016	$ 639,351	639,351
Deductions during period:
Collections of principal		(13,520)	(27,813)	(88,338)
Amortization of premium		(430)	(549)	(2,014)
Charge offs, net		11	17	17
Balance at end of period		$ 535,077	$ 611,006	$ 549,016
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Variable Interest Entities - _3

Variable Interest Entities - Summary of Residential Mortgage Loans Held-for-Investment (Detail) - Residential Mortgage Backed Securities $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019USD ($)loan	Dec. 31, 2018USD ($)loan
Portfolio Characteristics:
Number of loans | loan	266	22
Current principal balance	$ 126,189	$ 11,281
Average loan balance	$ 474	$ 513
Weighted average FICO score	745	722
Current Performance:
Current	$ 126,189	$ 11,281
Total	$ 126,189	$ 11,281
Variable Interest Entities Primary Beneficiary
Portfolio Characteristics:
Number of loans | loan	817	829
Current principal balance	$ 532,361	$ 545,881
Average loan balance	$ 652	$ 658
Net weighted average coupon rate	3.86%	3.85%
Weighted average maturity (years)	25 years	25 years 3 months 18 days
Weighted average FICO score	761	761
Current Performance:
Current	$ 529,256	$ 543,328
Bankruptcy/foreclosure	591	591
Total	532,361	545,881
Variable Interest Entities Primary Beneficiary | 30 days delinquent
Current Performance:
Delinquent	1,169
Variable Interest Entities Primary Beneficiary | 60 days delinquent
Current Performance:
Delinquent	891	896
Variable Interest Entities Primary Beneficiary | 90+ days delinquent
Current Performance:
Delinquent	$ 454	$ 1,066

Variable Interest Entities - _4

Variable Interest Entities - Summary of Geographic Concentrations of Residential Mortgage Loans Held-for-Investment (Detail) - Geographic Concentration Risk - Residential Loans Held For Investment	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%
California
Concentration Risk [Line Items]
Concentration risk percentage	81.00%	49.00%
Florida
Concentration Risk [Line Items]
Concentration risk percentage	6.00%	43.00%
Other states
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	3.00%
Variable Interest Entities Primary Beneficiary
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%
Variable Interest Entities Primary Beneficiary | California
Concentration Risk [Line Items]
Concentration risk percentage	43.00%	43.00%
Variable Interest Entities Primary Beneficiary | Florida
Concentration Risk [Line Items]
Concentration risk percentage	7.00%	7.00%
Variable Interest Entities Primary Beneficiary | Other states
Concentration Risk [Line Items]
Concentration risk percentage	50.00%	50.00%

Variable Interest Entities - _5

Variable Interest Entities - Summary of Activity in Allowance for Loan Losses (Detail) - Variable Interest Entities Primary Beneficiary - Residential Mortgage Backed Securities - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Variable Interest Entity [Line Items]
Balance at beginning of period	$ 186	$ 203	$ 203
Charge-offs, net	(11)	(17)	(17)
Balance at end of period	$ 175	$ 186	$ 186

Residential Properties - Additi

Residential Properties - Additional Information (Detail) - Wholly Owned Properties - Florida $ in Millions	Mar. 31, 2019USD ($)item	Dec. 31, 2018USD ($)item
Real Estate Properties [Line Items]
Number of residential property | item	86	86
Cost of residential property | $	$ 13.8	$ 13.8

Repurchase Agreements Balances,

Repurchase Agreements Balances, Weighted Average Interest Rates and Remaining Weighted Average Maturities (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 3,760,634	$ 3,811,627
Agency MBS
Assets Sold Under Agreements To Repurchase [Line Items]
Weighted average maturity	33 days	35 days
Repurchase agreements	$ 3,215,000	$ 3,235,000
Weighted average interest rate	2.68%	2.52%
Agency MBS | Collateral Pledged
Assets Sold Under Agreements To Repurchase [Line Items]
MBS pledged as collateral under the repurchase agreements and interest rate swaps	$ 3,421,455	$ 3,433,252
Agency MBS | Overnight
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 15,000
Weighted average interest rate	2.50%
Agency MBS | Less than 30 days
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 1,800,000	$ 1,510,000
Weighted average interest rate	2.69%	2.46%
Agency MBS | 30 days to 90 days
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 1,400,000	$ 1,725,000
Weighted average interest rate	2.66%	2.57%
Non-Agency MBS
Assets Sold Under Agreements To Repurchase [Line Items]
Weighted average maturity	18 days	13 days
Repurchase agreements	$ 545,634	$ 576,627
Weighted average interest rate	3.60%	3.55%
Non-Agency MBS | Collateral Pledged
Assets Sold Under Agreements To Repurchase [Line Items]
MBS pledged as collateral under the repurchase agreements and interest rate swaps	$ 700,391	$ 726,428
Non-Agency MBS | Less than 30 days
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 545,634	$ 576,627
Weighted average interest rate	3.60%	3.55%
MBS
Assets Sold Under Agreements To Repurchase [Line Items]
Weighted average maturity	31 days	32 days
Weighted average interest rate after adjusting for interest rate swaps	2.32%	2.23%
Weighted average maturity after adjusting for interest rate swaps	1222 days	1217 days
Repurchase agreements	$ 3,760,634	$ 3,811,627
Weighted average interest rate	2.81%	2.67%
MBS | Collateral Pledged
Assets Sold Under Agreements To Repurchase [Line Items]
MBS pledged as collateral under the repurchase agreements and interest rate swaps	$ 4,121,846	$ 4,159,680
MBS | Overnight
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 15,000
Weighted average interest rate	2.50%
MBS | Less than 30 days
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 2,345,634	$ 2,086,627
Weighted average interest rate	2.91%	2.76%
MBS | 30 days to 90 days
Assets Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 1,400,000	$ 1,725,000
Weighted average interest rate	2.66%	2.57%

Short-Term Debt - Warehouse Lin

Short-Term Debt - Warehouse Line of Credit (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 07, 2019	Dec. 28, 2018
Short-term Debt
Warehouse line of credit	$ 15,442
Warehouse Line Facility
Short-term Debt
Line of credit, maximum borrowing capacity	300,000	$ 300,000	$ 100,000
Warehouse line of credit	$ 15,400
Interest rate during the period (as a percent)	4.75%
Commitment fee percentage	0.25%
Warehouse Line Facility | LIBOR
Short-term Debt
Interest rate, basis spread (as a percent)	2.25%

Liabilities and Assets Subject

Liabilities and Assets Subject to Netting Arrangements (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Gross Amounts of Recognized Assets	$ 27,396	$ 46,207
Net Amounts of Assets Presented in the Balance Sheets	27,396	46,207
Gross Assets Not Offset Financial instruments	(27,396)	(46,207)
Gross Assets Not Offset Cash Collateral Received	5,238
Gross Assets Not Offset Net Amounts	(22,158)
Gross Amounts of Recognized Liabilities	3,812,337	3,827,528
Net Amounts of Liabilities Presented in the Balance Sheets	3,812,337	3,827,528
Gross Liabilities Not Offset Financial instruments	(3,812,337)	(3,827,528)
Derivative Financial Instruments, Assets
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Gross Amounts of Recognized Assets	27,396	46,207
Net Amounts of Assets Presented in the Balance Sheets	27,396	46,207
Gross Assets Not Offset Financial instruments	(27,396)	(46,207)
Gross Assets Not Offset Cash Collateral Received	5,238
Gross Assets Not Offset Net Amounts	(22,158)
Repurchase Agreements
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Gross Amounts of Recognized Liabilities	3,760,634	3,811,627
Net Amounts of Liabilities Presented in the Balance Sheets	3,760,634	3,811,627
Gross Liabilities Not Offset Financial instruments	(3,760,634)	(3,811,627)
Warehouse Line of Credit
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Gross Amounts of Recognized Liabilities	15,442
Net Amounts of Liabilities Presented in the Balance Sheets	15,442
Gross Liabilities Not Offset Financial instruments	(15,442)
Derivative Financial Instruments, Liabilities
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Gross Amounts of Recognized Liabilities	36,261	15,901
Net Amounts of Liabilities Presented in the Balance Sheets	36,261	15,901
Gross Liabilities Not Offset Financial instruments	$ (36,261)	$ (15,901)

Liabilities and Assets Subjec_2

Liabilities and Assets Subject to Netting Arrangements (Parenthetical) (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Pledged in Agency MBS as collateral		$ 30,300
Paid swap margin calls on our derivatives	$ 75,500	40,200
Derivative counterparty margin	5,238
Derivative instruments at fair value	27,396	46,207
Derivative instruments at fair value	36,261	15,901
Agency MBS
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Pledged in Agency MBS as collateral		3,430,000
Non-Agency MBS
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Pledged in Agency MBS as collateral		726,400
Residential mortgage loans
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Pledged in Agency MBS as collateral	17,200
Interest rate swap agreements
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Derivative instruments at fair value	$ 23,000
Interest rate swap agreements | Collateral Pledged
Derivative Assets Derivative Liabilities And Repurchase Agreements Subject To Netting Agreements [Line Items]
Derivative instruments at fair value		$ 15,900

Junior Subordinated Notes - Add

Junior Subordinated Notes - Additional Information (Detail) - USD ($)	Mar. 15, 2005	Mar. 31, 2019
Subordinated Borrowing [Line Items]
Junior subordinated notes	$ 37,380,000
First interest payment date		Jun. 30, 2005
Trust preferred securities	$ 36,250,000
Junior Subordinated Notes
Subordinated Borrowing [Line Items]
Interest rate above prevailing three-month LIBOR rate		3.10%
Debt, maturity date		2035
Trust Preferred Securities
Subordinated Borrowing [Line Items]
Interest rate above prevailing three-month LIBOR rate		3.10%
Debt, maturity date		2035

Fair Value Measurements on Recu

Fair Value Measurements on Recurring Basis (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Liabilities:
Derivative instruments at fair value	$ 36,261	$ 15,901
Payable at fair value	112,316
Derivative Financial Instruments, Liabilities
Liabilities:
Derivative instruments at fair value	36,261	15,901
Derivative Financial Instruments, Assets
Assets:
Asset fair value measurement	27,396	46,207
Agency MBS
Assets:
Asset fair value measurement	3,745,091	3,548,719
Agency MBS | Derivative Financial Instruments, Liabilities
Liabilities:
Payable at fair value	227,997
Non-Agency MBS
Assets:
Asset fair value measurement	768,597	795,203
Level 2 | Derivative Financial Instruments, Liabilities
Liabilities:
Derivative instruments at fair value	36,261	15,901
Level 2 | Derivative Financial Instruments, Assets
Assets:
Asset fair value measurement	27,396	46,207
Level 2 | Agency MBS
Assets:
Asset fair value measurement	3,745,091	3,548,719
Level 2 | Agency MBS | Derivative Financial Instruments, Liabilities
Liabilities:
Payable at fair value	227,997
Level 2 | Non-Agency MBS
Assets:
Asset fair value measurement	$ 768,597	$ 795,203

Carrying Value and Estimated Fa

Carrying Value and Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands		Mar. 31, 2019	Dec. 31, 2018
Financial Assets:
Residential mortgage loans held-for-investment	[1]	$ 535,077	$ 549,016
Residential mortgage loans held-for-securitization		129,583	11,660
Residential mortgage loans held-for-investment, Estimated Fair Value		531,723	538,362
Financial Liabilities:
Asset-backed securities issued by securitization trusts	[1]	525,712	539,651
Asset-backed securities issued by securitization trust, Estimated Fair Value		521,201	$ 528,045
Warehouse line of credit		15,442
Payable at fair value		$ 112,316
[1]	The consolidated balance sheets include assets of consolidated variable interest entities, or VIEs, that can only be used to settle obligations and liabilities of the VIEs for which creditors do not have recourse to the Company. At March 31, 2019 and December 31, 2018, total assets of the consolidated VIEs were $537 million and $551 million (including accrued interest receivable of $1.8 million and $1.8 million), respectively (which is recorded above in the line item entitled “Interest and dividends receivable”), and total liabilities were $527 million and $541 million (including accrued interest payable of $1.7 million and $1.7 million), respectively (which is recorded in the line item above entitled “Accrued interest payable”). Please refer to Note 5, “Variable Interest Entities,” for further discussion.

Series B Cumulative Convertib_2

Series B Cumulative Convertible Preferred Stock - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2019itemdirector$ / sharesshares	Dec. 31, 2018$ / shares
Conversion Of Stock [Line Items]
Series B Cumulative Convertible Preferred Stock, par value | $ / shares	$ 0.01	$ 0.01
Series B Cumulative Convertible Preferred Stock, liquidating preference per share | $ / shares	$ 25	$ 25
Series B Preferred Stock
Conversion Of Stock [Line Items]
Preferred Stock, dividend rate	6.25%
Preferred Stock, conversion start date	Jan. 25, 2012
Number of transactions to convert preferred stock	0
Conversion of preferred stock, conversion rate (in shares) | shares	5.2588
Number of consecutive trading days used in conversion analysis	30
Minimum number of quarters with failure to pay dividends, which triggers voting rights for preferred stock, quarters	6
Number of Board Of Directors that Preferred Stock owners are entitled to vote to elect when there is a failure to pay quarterly dividends for a set period | director	2
Minimum ratio of votes required to materially and adversely change the terms of preferred stock	66.67%
Series B Preferred Stock | Minimum
Conversion Of Stock [Line Items]
Percentage of common stock price to then-prevailing conversion price in order to exercise conversion option	130.00%
Number of consecutive trading days used in conversion analysis	20
Series A Preferred Stock
Conversion Of Stock [Line Items]
Preferred Stock, dividend rate	8.625%
Series C Preferred Stock
Conversion Of Stock [Line Items]
Preferred Stock, dividend rate	7.625%

Public Offerings and Capital _2

Public Offerings and Capital Stock - Additional Information (Detail)	Apr. 01, 2016USD ($)	Jan. 27, 2015USD ($)$ / sharesshares	Mar. 31, 2019USD ($)$ / sharesshares	Mar. 31, 2018USD ($)	Jan. 22, 2016item	Dec. 31, 2018$ / sharesshares	Aug. 05, 2014shares	Oct. 03, 2011shares
Capital Unit [Line Items]
Common Stock, authorized			200,000,000			200,000,000
Common Stock, issued			98,564,889			98,483,000
Common Stock, outstanding			98,564,889			98,483,000
Preferred stock, authorized			20,000,000
Number of shares authorized to repurchase under a share repurchase program								2,000,000
Number of common stock repurchased			0
Common stock remaining for issuance under the registration statement | $			$ 490,200,000
Registration statement declaration effective date			Apr. 13, 2016
Twenty Eighteen Dividend Reinvestment and Stock Purchase Plan
Capital Unit [Line Items]
Common Stock, authorized			15,303,119
Issuance of stock (in shares)			81,841
Stock issued, weighted average price per share | $ / shares			$ 4.36
Proceeds from issuance of common stock | $			$ 356,000
Anworth Mortgage Asset Corporation 2014 Equity Compensation Plan
Capital Unit [Line Items]
Maximum authorized shares of common stock under grant of stock options and other stock-based awards							2,000,000
Maximum
Capital Unit [Line Items]
Common stock, public offering | $	$ 534,442,660
Through Six Separate Authorizations Between December 13, 2013 and January 22, 2016
Capital Unit [Line Items]
Number of additional shares authorized to be repurchased			45,000,000
Number of share repurchase authorizations | item					6
FBR Sales Agreement
Capital Unit [Line Items]
Stock sales agreement value | $			$ 196,615,000
Stock sales agreement remaining amount | $			$ 152,100,000
Series A Preferred Stock
Capital Unit [Line Items]
Preferred stock, authorized			5,150,000
Preferred stock, par value | $ / shares			$ 0.01			$ 0.01
Preferred stock, liquidation preference | $ / shares			$ 25			$ 25
Preferred Stock, dividend rate			8.625%
Preferred stock redemption price | $ / shares			$ 25
Preferred stock, issued			1,919,378			1,919,000
Preferred stock, outstanding			1,919,378			1,919,000
Series B Preferred Stock
Capital Unit [Line Items]
Preferred stock, authorized			3,150,000
Preferred stock, liquidation preference | $ / shares			$ 25
Preferred Stock, dividend rate			6.25%
Preferred stock, issued			779,743
Preferred stock, outstanding			779,743
Series C Preferred Stock
Capital Unit [Line Items]
Preferred stock, authorized			5,000,000
Preferred stock, par value | $ / shares			$ 0.01			$ 0.01
Preferred stock, liquidation preference | $ / shares			$ 25			$ 25
Preferred Stock, dividend rate			7.625%
Preferred stock, issued			2,010,278			2,010,000
Preferred stock, outstanding			2,010,278			2,010,000
Issuance of stock (in shares)		300,000
Preferred stock, par value | $ / shares		$ 24.50
Public offering net proceeds | $		$ 7,000,000
Proceeds on Preferred Stock issued | $				$ 525,000

Transactions with Affiliates -

Transactions with Affiliates - Additional Information (Detail)	Jul. 01, 2012$ / mo	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Jul. 02, 2012ft²$ / ft²
Related Party Transaction [Line Items]
Description of management fee		In exchange for services provided, our Manager receives a management fee, paid monthly in arrears, in an amount equal to one-twelfth of 1.20% of our Equity (as defined in the Management Agreement).
Annual management fee as a percent of equity		1.20%
Number of days prior notice of non-renewal of the Management Agreement		180 days
Termination fees description		We are required to provide 180-days' prior notice of non-renewal of the Management Agreement and must pay a termination fee on the last day of any automatic renewal term equal to three times the average annual management fee earned by our Manager during the prior 24-month period immediately preceding the most recently completed month prior to the effective date of termination.
Sublease agreement, square feet leased | ft²				7,300
Rent paid for leased office space per square foot | $ / ft²				69.42
Sublease with PIA, expiration date	Jun. 30, 2022
New sublease agreement, base monthly rent | $ / mo	42,231.54
Sublease agreement, base monthly rent percentage increase starting July 1, 2017	3.00%
Rent		$ 139,000	$ 139,000
Fees paid for administrative services		Under our administrative services agreement with PIA, it provides administrative services and equipment to us including human resources, operational support and information technology, and we pay an annual fee of 5 basis points on the first $225 million of stockholders' equity and 2.25 basis points thereafter (paid quarterly in arrears) for those services. The administrative services agreement had an initial term of one year and renews for successive one-year terms thereafter unless either party gives notice of termination no less than 30 days before the expiration of the then-current annual term.
Basis points on equity for the annual fee		5 basis points on the first $225 million of stockholders' equity and 2.25 basis points thereafter (paid quarterly in arrears) for those services.
Stockholders equity amount used to calculate administrative service fees		$ 225,000,000
Prior written notice to terminate administrative agreement		30 days
Administrative service fees		$ 49,000	$ 39,000
First $225 million of Stockholders' Equity
Related Party Transaction [Line Items]
Basis points on equity for the annual fee		0.05%
Above $225 million of Stockholders' Equity
Related Party Transaction [Line Items]
Basis points on equity for the annual fee		0.0225%
Mr. Lloyd McAdams
Related Party Transaction [Line Items]
Outstanding membership interests		47.40%
Mr. Joseph E. McAdams
Related Party Transaction [Line Items]
Outstanding membership interests		47.40%
Mr. Brett Roth
Related Party Transaction [Line Items]
Change in Control and Arbitration Agreements, description		Under these agreements, in the event that a change in control occurs, each of these persons will receive a lump sum payment equal to (i) 12 months annual base salary in effect on December 31, 2011, plus (ii) the average annual incentive compensation received for the two complete fiscal years prior December 31, 2011, plus (iii) the average annual bonus received for the two complete fiscal years prior to December 31, 2011, as well as other benefits. For one of the Senior Vice Presidents and Portfolio Managers of our Manager, in the event that a change in control occurs, in addition to other benefits, he will receive a lump sum payment equal to (i) 12 months of the annual base salary (in effect on September 18, 2014) paid by our Manager plus (ii) $350,000.
Additional payment for change in control and arbitration agreements		$ 350,000
Ms. Heather U. Baines
Related Party Transaction [Line Items]
Outstanding membership interests		5.20%

Transactions with Affiliates _2

Transactions with Affiliates - Future Minimum Lease Commitment (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019
Operating Lease Liabilities, Payments Due
2019	$ 387,679
2020	529,800
2021	545,697
2022	276,882
Total Commitment	1,740,058
Operating Lease Liabilities, Discounted Cash Flows
2019	381,947
2020	513,143
2021	515,623
2022	257,305
Total Commitment	$ 1,668,018
Operating lease, discount rate (as a percent)		2.23%
Operating lease, remaining term		42 months

Equity Compensation Plan - Addi

Equity Compensation Plan - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended
	Dec. 31, 2017	Aug. 31, 2016	Mar. 31, 2019	Mar. 31, 2018	Aug. 05, 2014	Aug. 04, 2014
Performance-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Grant of restricted stock	162,613	146,552
Restricted shares, vesting term	3 years	3 years
Closing price of common stock on grant date	$ 5.66	$ 4.96
Unrecognized stock compensation expense			$ 148
Compensation expense related to restricted stock grant			$ 4	$ 4
Dividend equivalent rights, granted	0	0
Performance-Based Restricted Stock Units | Return to Capital Exceeds 10%
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares, vesting term	10 years	10 years
Performance-Based Restricted Stock Units | Involuntary Termination
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares, vesting term	3 years	3 years
Performance-Based Restricted Stock Units | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of total return to stockholders	10.00%	10.00%
Anworth Mortgage Asset Corporation 2014 Equity Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum authorized shares of common stock under grant of stock options and other stock-based awards					2,000,000
Anworth Mortgage Asset Corporation 2004 Equity Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Maximum authorized shares of common stock under grant of stock options and other stock-based awards						3,500,000
Anworth Mortgage Asset Corporation 2007 Dividend Equivalent Rights Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Dividend equivalent right issued, term			5 years
Dividend equivalent right issued			773,311
Dividend equivalent rights outstanding			773,311
Paid or accrued compensation related to dividend equivalent right issued			$ 91	105
2016 Award Grants | Performance-Based Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock compensation expense			40
Compensation expense related to restricted stock grant			$ 21	$ 21

Derivative Instruments - Fair v

Derivative Instruments - Fair value of Derivative Instruments (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)item	Dec. 31, 2018USD ($)
Derivative [Line Items]
Fair value of derivative assets	$ 27,396	$ 46,207
Fair value of derivative liabilities	36,261	15,901
AOCI relating to interest rate swaps	10,500
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months	3,800
Interest rate swaps
Derivative [Line Items]
Fair value of derivative assets	22,974	40,192
Fair value of derivative liabilities	36,261	15,901
Interest rate swap agreements
Derivative [Line Items]
Fair value of derivative assets	$ 23,000
Derivative contract, weighted average maturity (in months)	47 months
Notional amount of interest rate swap agreements added during the period	$ 200,000
Number of matured or terminated interest rate swap agreements | item	2
Notional amount of swap agreements matured or terminated during period	$ 150,000
Number of new swap agreements | item	4
TBA Agency MBS
Derivative [Line Items]
Fair value of derivative assets	$ 4,422	$ 6,015
Minimum | Interest rate swap agreements
Derivative [Line Items]
Fixed interest rate	1.287%
Minimum | TBA Agency MBS
Derivative [Line Items]
Fixed interest rate	4.00%
Maximum | Interest rate swap agreements
Derivative [Line Items]
Fixed interest rate	3.2205%
Maximum | TBA Agency MBS
Derivative [Line Items]
Fixed interest rate	4.50%

Notional Amounts of Swap Agreem

Notional Amounts of Swap Agreement, Weighted Average Interest Rates and Remaining Term (Detail) - Interest rate swap agreements - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Notional Amount	$ 3,356,000	$ 3,306,000
Weighted Average Fixed Rate	2.13%	2.10%
Remaining Term in Months	47 months	47 months
Less than 1 year
Derivative [Line Items]
Notional Amount	$ 650,000	$ 725,000
Weighted Average Fixed Rate	1.61%	1.60%
Remaining Term in Months	6 months	7 months
1 year to 2 years
Derivative [Line Items]
Notional Amount	$ 666,000	$ 591,000
Weighted Average Fixed Rate	1.76%	1.70%
Remaining Term in Months	18 months	19 months
2 years to 3 years
Derivative [Line Items]
Notional Amount	$ 300,000	$ 400,000
Weighted Average Fixed Rate	1.87%	1.96%
Remaining Term in Months	30 months	30 months
3 years to 4 years
Derivative [Line Items]
Notional Amount	$ 270,000	$ 220,000
Weighted Average Fixed Rate	2.09%	1.92%
Remaining Term in Months	44 months	43 months
4 years to 5 years
Derivative [Line Items]
Notional Amount	$ 355,000	$ 205,000
Weighted Average Fixed Rate	2.39%	2.27%
Remaining Term in Months	57 months	57 months
5 years to 7 years
Derivative [Line Items]
Notional Amount	$ 525,000	$ 475,000
Weighted Average Fixed Rate	2.48%	2.41%
Remaining Term in Months	75 months	73 months
7 years to 10 years
Derivative [Line Items]
Notional Amount	$ 590,000	$ 690,000
Weighted Average Fixed Rate	2.82%	2.83%
Remaining Term in Months	104 months	104 months

Derivative Instruments - Swap A

Derivative Instruments - Swap Agreements by Counterparty (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Chicago Mercantile Exchange
Derivative [Line Items]
Notional Amount	$ 3,356,000	$ 3,306,000
Interest rate swap agreements
Derivative [Line Items]
Notional Amount	$ 3,356,000	$ 3,306,000

Derivative Instruments - Additi

Derivative Instruments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Derivative [Line Items]
Gain (loss) on derivatives	$ (27,289)	$ 13,412
Interest rate swap agreements
Derivative [Line Items]
Derivative contract, weighted average maturity (in months)	47 months
Aggregate notional amount	$ 3,356,000		$ 3,306,000
Interest rate swap agreements | Minimum
Derivative [Line Items]
Fixed interest rate	1.287%
Interest rate swap agreements | Maximum
Derivative [Line Items]
Fixed interest rate	3.2205%
TBA Agency MBS
Derivative [Line Items]
Gain (loss) on derivatives	$ 6,429	$ (11,981)
Aggregate notional amount	$ 700,000
TBA Agency MBS | Minimum
Derivative [Line Items]
Fixed interest rate	4.00%
TBA Agency MBS | Maximum
Derivative [Line Items]
Fixed interest rate	4.50%

Earnings Per Share (Detail)

Earnings Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net (Loss) to Common Stockholders, Basic EPS	$ (22,267)	$ (5,150)
Net (Loss) Income to Common Stockholders, Diluted EPS	$ (22,267)	$ (5,150)
Average Shares, Basic EPS	98,537	98,185
Average Shares, Diluted EPS	98,537	98,185
Loss per Share, Basic EPS	$ (0.23)	$ (0.05)
Loss per Share, Diluted EPS	$ (0.23)	$ (0.05)

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) - USD ($)	Apr. 30, 2019	Apr. 04, 2019	Mar. 14, 2019	Mar. 31, 2019	Mar. 31, 2018	Apr. 01, 2019
Subsequent Event [Line Items]
Dividend declared common share, per share			$ 0.13	$ 0.13	$ 0.15
Series B Preferred Stock
Subsequent Event [Line Items]
Conversion of preferred stock, conversion rate (in shares)				5.2588
Subsequent Event
Subsequent Event [Line Items]
Maximum amount of capital stock that may be offered per a registration statement		$ 490,236,182
Purchases, Residential mortgage loans held-for-investment	$ 74,500,000
Subsequent Event | Series B Preferred Stock
Subsequent Event [Line Items]
Conversion of preferred stock, conversion rate (in shares)						5.3539