Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Additional Information (Details)

v3.20.2
Goodwill and Intangible Assets - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2018
Jun. 30, 2020
Aug. 31, 2017
Aug. 31, 2016
Finite-Lived Intangible Assets [Line Items]            
Goodwill $ 8,881,000     $ 8,881,000    
Amortization expense related to intangible assets $ 154,000 $ 253,000        
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           $ 4,300,000
Goldline, LLC            
Finite-Lived Intangible Assets [Line Items]            
Intangibles acquired         $ 5,000,000  
Goodwill         $ 1,400,000