v3.23.3

Document And Entity Information	Dec. 04, 2023
Document Information [Line Items]
Document Type	8-K
Amendment Flag	false
Document Period End Date	Dec. 04, 2023
Entity Registrant Name	ARLINGTON ASSET INVESTMENT CORP.
Entity Central Index Key	0001209028
Entity Emerging Growth Company	false
Entity File Number	001-34374
Entity Incorporation, State or Country Code	VA
Entity Tax Identification Number	54-1873198
Entity Address, Address Line One	6862 Elm Street
Entity Address, Address Line Two	Suite 320
Entity Address, City or Town	McLean
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	22101
City Area Code	703
Local Phone Number	373-0200
Entity Information, Former Legal or Registered Name	N/A
Written Communications	true
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Common Class A [Member]
Document Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AAIC
Security Exchange Name	NYSE
Six Point Seventy Five Percentage Senior Notes Due Two Thousand Twenty Five [Member]
Document Information [Line Items]
Title of 12(b) Security	6.75% Senior Notes due 2025
Trading Symbol	AIC
Security Exchange Name	NYSE
Seven Point Zero Zero Percent Series B Cumulative Perpetual Redeemable Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	7.00% Series B Cumulative Perpetual Redeemable Preferred Stock
Trading Symbol	AAIC PrB
Security Exchange Name	NYSE
Eight Point Two Fifty Percent Series C Fixed To Floating Rate Cumulative Redeemable Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	8.250% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock
Trading Symbol	AAIC PrC
Security Exchange Name	NYSE
Six Point Zero Zero Zero Percentage Senior Notes Due Two Thousand Twenty Six [Member]
Document Information [Line Items]
Title of 12(b) Security	6.000% Senior Notes due 2026
Trading Symbol	AAIN
Security Exchange Name	NYSE

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Area code of city

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For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

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Address Line 1 such as Attn, Building Name, Street Name

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Address Line 2 such as Street or Suite number

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Name of the City or Town

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Name of the state or province.

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A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

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Two-character EDGAR code representing the state or country of incorporation.

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Former Legal or Registered Name of an entity

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The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Local phone number for entity.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Name of the Exchange on which a security is registered.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Trading symbol of an instrument as listed on an exchange.

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Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Arlington Asset Investment Corp. 8-K