Annual report pursuant to Section 13 and 15(d)

Joint Venture (Detail)

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Joint Venture (Detail) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Nov. 30, 2017
Equity Method Investments and Joint Ventures [Abstract]      
Partnership interest 50.00%   50.00%
Investment in subsidiaries $ 496 $ 1,659  
Equity in net income of subsidiaries $ 1,337 $ 1,259