Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Narrative) (Details)

v3.19.3
Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jul. 01, 2019
Jun. 30, 2019
Property, Plant and Equipment [Line Items]        
Restricted cash $ 300     $ 300
Number of days notice to terminate contract 14 days      
Precious metals held under financing arrangements $ 200,809     $ 208,792
Lease cost 400      
Operating lease cost 300      
Operating lease payments $ 400      
Operating lease term (in years) 5 years 1 month 6 days      
Operating lease (percent) 4.90%      
Revenue percentage from other sources (less than) 1.00%      
Advertising expense $ 463 $ 590    
Shipping, handling costs 1,472,674 1,556,615    
Operating lease right of use assets, net 5,066      
Lease liability $ 6,023      
Accounting Standards Update 2016-02        
Property, Plant and Equipment [Line Items]        
Operating lease right of use assets, net     $ 5,300  
Lease liability     $ 6,300  
Minimum        
Property, Plant and Equipment [Line Items]        
Estimated useful lives of related assets 3 years      
Estimated useful lives of intangibles 3 years      
Maximum        
Property, Plant and Equipment [Line Items]        
Estimated useful lives of related assets 25 years      
Estimated useful lives of intangibles 15 years      
Shipping and Handling        
Property, Plant and Equipment [Line Items]        
Shipping, handling costs $ 1,371 $ 1,740