v3.25.3

Document And Entity Information - shares	9 Months Ended
Document And Entity Information - shares	Sep. 30, 2025	Oct. 31, 2025
Document Information [Line Items]
Entity Central Index Key	0001464343
Entity Registrant Name	Atlanticus Holdings Corp
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2025
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity Incorporation, State or Country Code	GA
Entity Tax Identification Number	58-2336689
Entity File Number	0-53717
Entity Address, Address Line One	Five Concourse Parkway, Suite 300
Entity Address, City or Town	Atlanta
Entity Address, State or Province	GA
Entity Address, Postal Zip Code	30328
City Area Code	770
Local Phone Number	828-2000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		15,141,530
Senior Notes 2029 [Member]
Document Information [Line Items]
Title of 12(b) Security	9.25% Senior Notes due 2029
Trading Symbol	ATLCZ
Security Exchange Name	NASDAQ
Senior Notes 2026 [Member]
Document Information [Line Items]
Title of 12(b) Security	6.125% Senior Notes due 2026
Trading Symbol	ATLCL
Security Exchange Name	NASDAQ
Series B Preferred Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	7.625% Series B Cumulative Perpetual Preferred Stock, no par value per share
Trading Symbol	ATLCP
Security Exchange Name	NASDAQ
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, no par value per share
Trading Symbol	ATLC
Security Exchange Name	NASDAQ

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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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Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

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Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.

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Indicates that the company is a Smaller Reporting Company (SRC).

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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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Local phone number for entity.

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Title of a 12(b) registered security.

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Atlanticus Holdings Corp 10-Q