Quarterly report pursuant to Section 13 or 15(d)

Debt - Additional Information (Detail)

v3.5.0.2
Debt - Additional Information (Detail)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Aug. 01, 2017
USD ($)
Aug. 01, 2016
USD ($)
Aug. 01, 2015
USD ($)
Nov. 01, 2014
USD ($)
Jun. 24, 2013
USD ($)
Installment
Jun. 03, 2013
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Installment
Sep. 30, 2015
USD ($)
Dec. 31, 2015
USD ($)
Jun. 30, 2015
USD ($)
Oct. 31, 2014
USD ($)
Debt Instrument [Line Items]                                
Interest expense including amortization of deferred financing fees                   $ 47,000 $ 77,000 $ 174,000 $ 191,000      
Promissory Note                                
Debt Instrument [Line Items]                                
Variable rate notes issued for redemption of partners' interests, spread           1.00%                    
Debt instrument variable interest rate basis                       The principal amount outstanding under these notes bears interest at the U.S. Prime Rate plus 1% in effect at the time payments are due.        
Aggregate principal amount           $ 5,300,000                    
Debt instrument reduction to principal amount                               $ 1,722,000
Principal amount of notes                   3,578,000   $ 3,578,000        
Principal amount payment terms                       As a result, the principal amounts of the notes of $3,578 became payable in four equal installments of approximately $900 on November 1, 2014, and on each of August 1, 2015, 2016 and 2017.        
Number of installments | Installment                       4        
Installment amount payable   $ 900,000 $ 900,000 $ 900,000                        
Principal amount of notes outstanding                   894,000   $ 894,000   $ 1,789,000    
Accrued, unpaid interest                       $ 7,000   32,000    
Promissory Note | Jamison                                
Debt Instrument [Line Items]                                
Variable rate notes issued for redemption of partners' interests, spread                       5.00%        
Debt instrument variable interest rate basis                       The principal amount outstanding under the notes bears interest at 5% per annum.        
Aggregate principal amount                             $ 2,165,000  
Principal amount payment terms                       The principal amounts of the notes are payable in three equal installments of approximately $722 on each of June 30, 2016, 2017 and 2018.        
Number of installments | Installment                       3        
Installment amount payable                 $ 722,000              
Principal amount of notes outstanding                   1,444,000   $ 1,444,000   2,165,000    
Accrued, unpaid interest                       18,000   55,000    
Promissory Note | Scenario Forecast                                
Debt Instrument [Line Items]                                
Installment amount payable $ 900,000                              
Promissory Note | Scenario Forecast | Jamison                                
Debt Instrument [Line Items]                                
Installment amount payable             $ 722,000 $ 722,000                
City National Bank                                
Debt Instrument [Line Items]                                
Credit facility, borrowing capacity         $ 15,000,000                      
Credit facility, proceeds from borrowings         7,000,000                      
Borrowings under revolving credit facility                   0   0   $ 0    
Interest expense including amortization of deferred financing fees                   $ 12,000 $ 10,000 $ 35,000 $ 30,000      
Delayed Draw Term Loan | City National Bank                                
Debt Instrument [Line Items]                                
Credit facility, borrowing capacity         $ 7,500,000                      
Credit facility maturity date         Jun. 24, 2020                      
Credit facility, interest rate description                       The higher of the prime rate plus a margin of 0.05 percentage points and 2.5% or (b) the LIBOR rate plus 3 percentage points, at the borrowers' option        
Variable rate notes issued for redemption of partners' interests, spread         3.00%                      
Debt instrument variable interest rate basis                       LIBOR        
Credit facility, number of installments | Installment         20                      
Credit facility, frequency of installments                       Quarterly        
Delayed Draw Term Loan | City National Bank | Maximum                                
Debt Instrument [Line Items]                                
Variable rate notes issued for redemption of partners' interests, spread         0.05%                      
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         Dec. 24, 2016                      
Debt covenant, restriction on change in control         30.00%