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 ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2018
Mar. 31, 2024
Mar. 31, 2023
Feb. 26, 2024
Jun. 30, 2023
Oct. 31, 2022
Mar. 31, 2021
Aug. 31, 2017
Aug. 31, 2016
Finite-Lived Intangible Assets [Line Items]                      
Goodwill $ 120,956     $ 120,956     $ 100,943        
Amortization expense related to intangible assets 2,200 $ 2,700   6,500 $ 8,200            
Goodwill and intangible asset impairment     $ 2,700                
Intangible assets $ 74,917     $ 74,917     $ 62,630        
JMB                      
Finite-Lived Intangible Assets [Line Items]                      
Percentage of investments in privately-held entities accounted under equity method                 20.50%    
Minimum                      
Finite-Lived Intangible Assets [Line Items]                      
Estimated useful lives of intangibles 1 year     1 year              
Maximum                      
Finite-Lived Intangible Assets [Line Items]                      
Estimated useful lives of intangibles 15 years     15 years              
SilverTowne Mint                      
Finite-Lived Intangible Assets [Line Items]                      
Intangibles acquired                     $ 2,500
Goodwill                     $ 4,300
Goldline, LLC                      
Finite-Lived Intangible Assets [Line Items]                      
Intangibles acquired                   $ 5,000  
Goodwill                   $ 1,400  
LPM                      
Finite-Lived Intangible Assets [Line Items]                      
Intangibles acquired           $ 10,300          
Goodwill           $ 20,013          
JMB                      
Finite-Lived Intangible Assets [Line Items]                      
Intangibles acquired                 $ 98,000    
Goodwill                 $ 92,100    
Intangible assets $ 8,500     $ 8,500       $ 4,500      
JMB | A Mark Precious Metals, Inc                      
Finite-Lived Intangible Assets [Line Items]                      
Percentage of ownership owned by parent                 100.00%