Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Additional Information (Details)

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Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Aug. 31, 2016
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2020
Mar. 31, 2019
Jun. 30, 2019
Aug. 31, 2017
Finite-Lived Intangible Assets [Line Items]                
Goodwill   $ 8,881,000     $ 8,881,000   $ 8,881,000  
Amortization expense related to intangible assets   $ 260,000 $ 252,000   $ 768,000 $ 756,000    
Goodwill and intangible asset impairment       $ 2,700,000        
Minimum                
Finite-Lived Intangible Assets [Line Items]                
Estimated useful lives of intangibles         3 years      
Maximum                
Finite-Lived Intangible Assets [Line Items]                
Estimated useful lives of intangibles         15 years      
SilverTowne Mint                
Finite-Lived Intangible Assets [Line Items]                
Intangibles acquired $ 2,500,000              
Goodwill acquired $ 4,300,000              
Goldline, LLC                
Finite-Lived Intangible Assets [Line Items]                
Intangibles assets               $ 5,000,000
Goodwill               $ 1,400,000