Annual report pursuant to Section 13 and 15(d)

Forgivable Loans Receivable - Additional Information (Detail)

v3.8.0.1
Forgivable Loans Receivable - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2017
Sep. 30, 2017
Dec. 31, 2016
Sep. 30, 2016
Debt Instrument, Interest Rate, Stated Percentage 28.00%      
Notes, Loans and Financing Receivable, Net, Current $ 1,616 $ 1,600 $ 1,712 $ 1,700
Forgivable Loan Receivable [Member]        
Debt Instrument, Interest Rate, Stated Percentage 9.00%