Quarterly report pursuant to Section 13 or 15(d)

Debt - Additional Information (Detail)

v3.22.2.2
Debt - Additional Information (Detail)
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 17, 2022
Jul. 01, 2019
USD ($)
Jun. 24, 2013
USD ($)
Installment
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]                
Outstanding borrowings under credit facility       $ 6,330,000   $ 6,330,000   $ 9,025,000
Interest expense including amortization of deferred financing fees       109,000 $ 92,000 270,000 $ 294,000  
City National Bank                
Debt Instrument [Line Items]                
Credit facility, borrowing capacity     $ 15,000,000.0          
Accrued, unpaid interest           30,000   25,000
Interest expense including amortization of deferred financing fees       107,000 $ 90,000 $ 264,000 $ 86,000  
Delayed Draw Term Loan | City National Bank                
Debt Instrument [Line Items]                
Credit facility, borrowing capacity   $ 25,500,000 $ 7,500,000          
Credit facility maturity date   Jul. 01, 2026       Jun. 24, 2025    
Credit facility, interest rate description           the higher of the prime rate plus a margin of 0.25 percentage points and 2.5% or (b) the SOFR rate plus 2.80 percentage points, at the borrowers’ option    
Increased borrowing capacity under credit facility   $ 18,000,000.0            
Credit facility draw date   Jul. 01, 2024            
Variable rate notes issued for redemption of partners' interests, spread     2.80%          
Credit facility, number of installments | Installment     20          
Credit facility, frequency of installments           quarterly    
Outstanding borrowings under credit facility       6,300,000   $ 6,300,000   9,000,000
Delayed Draw Term Loan | City National Bank | Maximum                
Debt Instrument [Line Items]                
Variable rate notes issued for redemption of partners' interests, spread     0.25%          
Debt instrument variable interest rate basis           prime rate    
Delayed Draw Term Loan | City National Bank | Minimum                
Debt Instrument [Line Items]                
Credit facility, fixed interest rate     2.50%          
Borrowings Under Revolving Credit Agreement | City National Bank                
Debt Instrument [Line Items]                
Credit facility, borrowing capacity   $ 10,000,000.0 $ 7,500,000          
Credit facility maturity date           Jun. 21, 2019    
Credit facility extended maturity date Jun. 18, 2023              
Increased borrowing capacity under credit facility   $ 2,500,000            
Debt covenant, restriction on change in control     30.00%          
Outstanding borrowings under credit facility       $ 0   $ 0   $ 0