Quarterly report pursuant to Section 13 or 15(d)

Debt - Additional Information (Detail)

v3.23.3
Debt - Additional Information (Detail)
3 Months Ended 9 Months Ended 12 Months Ended
Jun. 15, 2023
Jun. 17, 2022
Jul. 01, 2019
USD ($)
Jun. 24, 2013
USD ($)
Installment
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
Debt Instrument [Line Items]                  
Outstanding borrowings under credit facility         $ 3,624,000   $ 3,624,000   $ 6,337,000
Interest expense including amortization of deferred financing fees         86,000 $ 109,000 314,000 $ 270,000  
City National Bank                  
Debt Instrument [Line Items]                  
Credit facility, borrowing capacity       $ 15,000,000          
Accrued, unpaid interest             24,000   37,000
Interest expense including amortization of deferred financing fees         84,000 $ 107,000 $ 302,000 $ 264,000  
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            
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         3,600,000   $ 3,600,000   6,300,000
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 $ 7,500,000          
Credit facility maturity date Jun. 18, 2024 Jun. 18, 2023         Jun. 21, 2019    
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