Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Spin-off) (Details)

v3.2.0.727
Stockholders' Equity (Spin-off) (Details)
 12 Months Ended
Mar. 19, 2014
$ / shares
shares
Mar. 19, 2014
$ / shares
shares
Mar. 14, 2014
$ / shares
Jun. 30, 2015
USD ($)
shares
Jun. 30, 2014
shares
Mar. 17, 2014
$ / shares
Class of Stock [Line Items]            
Exchange ratio based on average closing price for SGI shares 0.2397          
Common stock exchange ratio       4.1717    
Shares granted (in shares)       3,000 0  
SGI (Former Parent)            
Class of Stock [Line Items]            
Three day weighted average share price before spin-off ( per share) | $ / shares     $ 3.32      
Share price | $ / shares $ 14.00 $ 14.00 $ 3.37     $ 13.30
SGI            
Class of Stock [Line Items]            
Three day weighted average share price after spin-off ( per share) | $ / shares $ 13.85          
Awards assumed from SGI spin-off            
Class of Stock [Line Items]            
Shares granted (in shares) 249,846          
Total compensation cost not yet recognized | $       $ 400,000    
Restricted Stock Units (RSUs)            
Class of Stock [Line Items]            
Shares granted (in shares)       0    
Period for recognition of nonvested awards (in years)       9 months 21 days    
Restricted Stock Units (RSUs) | Awards assumed from SGI spin-off            
Class of Stock [Line Items]            
Grants during the period (shares)   130,646        
Shares granted (in shares) 130,646          
Total compensation cost not yet recognized, other than options | $       $ 100,000    
Restricted Stock Units (RSUs) | Awards assumed from SGI spin-off | Issued to A-Mark Employees            
Class of Stock [Line Items]            
Grants during the period (shares) 50,340          
Stock Appreciation Rights (SARs) | Awards assumed from SGI spin-off            
Class of Stock [Line Items]            
Grants during the period (shares) 8,990 8,990        
Total compensation cost not yet recognized, other than options | $       $ 0    
Period for recognition of nonvested awards (in years)            
Stock Appreciation Rights (SARs) | Awards assumed from SGI spin-off | Issued to A-Mark Employees            
Class of Stock [Line Items]            
Grants during the period (shares) 8,990          
Stock Options            
Class of Stock [Line Items]            
Period for recognition of nonvested awards (in years)       2 years 4 months    
Stock Options | Awards assumed from SGI spin-off | Issued to A-Mark Employees            
Class of Stock [Line Items]            
Grants during the period (shares) 216,943