Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.20.2
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
 12 Months Ended
Sep. 19, 2019
Jun. 30, 2020
Jun. 30, 2019
Jul. 01, 2019
Summary Of Significant Accounting Policies [Line Items]        
Restricted cash   $ 200,000 $ 300,000  
Notice period to terminate contract   14 days    
Precious metals held under financing arrangements [1]   $ 178,577,000 208,792,000  
Lease cost   1,700,000    
Operating lease cost   1,400,000    
Operating lease payments   $ 1,500,000    
Operating lease term (in years)   4 years 6 months    
Operating lease (percent)   4.90%    
Metals purchase by customer maximum specified time period   1 year    
Metal delivers to customer after receiving customers deposit based on prevailing current spot price percentage   110.00%    
Unpriced metal is subject to margin call If deposit falls below percentage of value of unpriced metal   105.00%    
Percentage to remit partial payment of total order price   20.00%    
Advertising expense   $ 2,205,000 2,461,000  
Cost of sales   5,394,121,000 4,751,199,000  
Operating lease right of use assets   4,223,000    
Total present value of lease liabilities   5,109,000    
Accounting Standards Update 2016-02        
Summary Of Significant Accounting Policies [Line Items]        
Operating lease right of use assets       $ 5,300,000
Total present value of lease liabilities       $ 6,300,000
Shipping and Handling        
Summary Of Significant Accounting Policies [Line Items]        
Cost of sales   $ 8,000,000 $ 6,500,000  
Convertible Revolving Credit Facility        
Summary Of Significant Accounting Policies [Line Items]        
Line of credit facility, maximum borrowing capacity $ 4,000,000      
Line of credit facility, interest rate 12.00%      
Line of credit facility, expiration date Sep. 18, 2022      
Line of credit facility, percentage of outstanding principal converted into borrower's issued and outstanding common stock 22.00%      
Line of credit facility, percentage of repay outstanding unrelated third-party debt in exchange for borrower's issued and outstanding common stock 27.50%      
Line of credit facility, additional interest rate in case of default by borrower 10.00%      
Line of credit facility, entitlement of interest to lender in event of excess gross sales price $ 9,900,000      
Minimum        
Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of related assets   3 years    
Estimated useful lives of intangibles   3 years    
Percentage of investments in privately-held entities accounted under equity method   20.00%    
Maximum        
Summary Of Significant Accounting Policies [Line Items]        
Estimated useful lives of related assets   25 years    
Estimated useful lives of intangibles   15 years    
Percentage of investments in privately-held entities accounted under equity method   50.00%    
Customer locks period for purchase price   2 years    
[1] Includes amounts of the consolidated variable interest entity, which is presented separately in the table below.