Annual report pursuant to Section 13 and 15(d)

Debt - Additional Information (Detail)

v3.19.3.a.u2
Debt - Additional Information (Detail)
12 Months Ended
Jul. 01, 2019
USD ($)
Jun. 24, 2013
USD ($)
Installment
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]          
Outstanding borrowings under credit facility     $ 16,200,000    
Interest expense including amortization of deferred financing fees     481,000 $ 62,000 $ 112,000
City National Bank          
Debt Instrument [Line Items]          
Credit facility, borrowing capacity   $ 15,000,000      
Interest expense including amortization of deferred financing fees     460,000 21,000 $ 17,000
Accrued, unpaid interest     $ 0 0  
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 LIBOR rate plus 2.75 percentage points, at the borrowers’ option.    
Increased borrowing capacity under credit facility $ 18,000        
Credit facility draw date Jul. 01, 2024        
Variable rate notes issued for redemption of partners' interests, spread   2.75%      
Debt instrument variable interest rate basis     LIBOR    
Credit facility, number of installments | Installment   20      
Credit facility, frequency of installments     Quarterly    
Outstanding borrowings under credit facility     $ 16,200,000 0  
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   $ 7,500,000      
Credit facility maturity date     Jun. 21, 2019    
Credit facility extended maturity date     Jun. 19, 2020    
Debt covenant, restriction on change in control   30.00%      
Outstanding borrowings under credit facility     $ 0 $ 0