XML 11 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Document And Entity Information - shares
 3 Months Ended
Jul. 31, 2017
Sep. 06, 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)   7,365,941
Document Type 10-Q  
Document Period End Date Jul. 31, 2017  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Amendment Flag false