Annual report pursuant to Section 13 and 15(d)

Related Party Transactions (Details)

v3.5.0.2
Related Party Transactions (Details) - USD ($)
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jul. 23, 2015
Feb. 28, 2015
Oct. 09, 2014
Related Party Transaction [Line Items]          
Sales $ 747,853,000 $ 7,521,000      
Purchases 49,131,000 9,201,000      
Receivable 4,309,000 1,376,000      
Payables 138,000 10,000      
Income (loss) from equity method investment 701,000 0      
Equity method investment 7,373,000 2,000,000      
Income taxes receivable from Former Parent 203,000 1,095,000      
Equity method investee          
Related Party Transaction [Line Items]          
Sales 717,309,000 0      
Purchases 6,867,000 0      
Receivable 2,396,000 279,000      
Payables 0 0      
Former Parent          
Related Party Transaction [Line Items]          
Secondment fees 150,000 150,000      
Receivable from related party 0 0      
W.A.Richardson Builders, LLC (WAR)          
Related Party Transaction [Line Items]          
Contractual obligation       $ 1,500,000  
Fees payable, percentage       5.00%  
Former owner          
Related Party Transaction [Line Items]          
Payment related to royalty agreement with former owner 21,000 254,000      
Royalty expense 0 254,000      
Stack's Bowers Numismatics, LLC          
Related Party Transaction [Line Items]          
Sales 30,544,000 7,521,000      
Purchases 42,264,000 9,201,000      
Receivable 1,913,000 1,097,000      
Payables 138,000 10,000      
Interest income 2,367,000 1,119,000      
Former Parent SGI Plans          
Related Party Transaction [Line Items]          
Other Commitment 150,000        
July 23, 2015 Loan Agreement | Stack Bowers Galleries          
Related Party Transaction [Line Items]          
Short term loan receivable 1,400,000 0 $ 2,500,000    
October 9, 2014 Loan Agreement | Stack Bowers Galleries          
Related Party Transaction [Line Items]          
Short term loan receivable 0       $ 16,000,000
Interest Income from Loan Receivable | Stack's Bowers Numismatics, LLC          
Related Party Transaction [Line Items]          
Interest income 65,000 229,000      
Interest Income from Finance Products | Stack's Bowers Numismatics, LLC          
Related Party Transaction [Line Items]          
Interest income $ 2,302,000 $ 890,000