Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Letters of Credit (Detail)

v3.20.2
Commitments and Contingencies - Letters of Credit (Detail) - Line of Credit - USD ($)
Sep. 30, 2020
Sep. 30, 2019
Debt Instrument [Line Items]    
Assumed debt $ 50,000,000.0  
Letters of credit outstanding $ 10,900,000 $ 10,900,000