XML 40 R1.htm IDEA: XBRL DOCUMENT v2.4.0.8
Document and Entity Information
6 Months Ended
Dec. 31, 2013
Jan. 21, 2014
Common Class A
Jan. 21, 2014
Common Class B
Jan. 21, 2014
Common Class C
Document Information [Line Items]        
Document Type 10-Q      
Amendment Flag false      
Document Period End Date Dec. 31, 2013      
Document Fiscal Year Focus 2014      
Document Fiscal Period Focus Q2      
Trading Symbol GROW      
Entity Registrant Name U S GLOBAL INVESTORS INC      
Entity Central Index Key 0000754811      
Current Fiscal Year End Date --06-30      
Entity Filer Category Accelerated Filer      
Entity Common Stock, Shares Outstanding   13,394,446 0 2,069,731