XML 11 R1.htm IDEA: XBRL DOCUMENT v3.10.0.1
Document And Entity Information - shares
 6 Months Ended
Oct. 31, 2018
Dec. 03, 2018
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 Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding (in shares)   6,775,863
Document Type 10-Q  
Document Period End Date Oct. 31, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2  
Amendment Flag false