Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2024	Jul. 31, 2024
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	Q2
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
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		14,744,679
Senior Notes Due in 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 Due in 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