Document And Entity Information (USD $)
12 Months Ended
Jun. 30, 2014
Aug. 22, 2014
Dec. 31, 2013
Document and Entity Information [Abstract]      
Entity Registrant Name COLLECTORS UNIVERSE INC    
Document Type 10-K    
Current Fiscal Year End Date --06-30    
Entity Common Stock, Shares Outstanding   8,863,291  
Entity Public Float     $ 104,857,000
Amendment Flag false    
Entity Central Index Key 0001089143    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Filer Category Accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date Jun. 30, 2014    
Document Fiscal Year Focus 2014    
Document Fiscal Period Focus FY