Document And Entity Information - shares	6 Months Ended
	Oct. 31, 2017	Dec. 05, 2017
Document Information [Line Items]
Entity Registrant Name	AMERICAS CARMART INC
Entity Central Index Key	0000799850
Trading Symbol	crmt
Current Fiscal Year End Date	--04-30
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		7,150,061
Document Type	10-Q
Document Period End Date	Oct. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false