| Long-Term Debt - Note Payable to the Sellers of Vintage Stock - Additional Information (Details) - USD ($) | Jun. 07, 2018 | Nov. 03, 2016 | Sep. 30, 2020 | 
|---|---|---|---|
| Comvest Term Loan | |||
| Debt Instrument [Line Items] | |||
| Credit line maximum | $ 24,000,000.0 | ||
| Credit line maturity date | Sep. 23, 2023 | ||
| Financed Mezzanine Loan | |||
| Debt Instrument [Line Items] | |||
| Credit line maximum | $ 10,000,000.0 | ||
| Financed Mezzanine Loan | Sellers Subordinated Acquisition Note | |||
| Debt Instrument [Line Items] | |||
| Weighted average interest for the period | 8.00% | 
| X | ||||||||||
| 
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
 | 
| X | ||||||||||
| 
- Definition Date the credit facility terminates, in YYYY-MM-DD format. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition The effective interest rate during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 | 
| X | ||||||||||
| 
- Details 
 |