XML 19 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Document And Entity Information - USD ($)
 12 Months Ended
Apr. 30, 2017
Jun. 08, 2017
Oct. 31, 2016
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)   7,548,969  
Entity Public Float     $ 320,114,285
Document Type 10-K    
Document Period End Date Apr. 30, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false