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Earnings Per Share and Equity - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Restricted Stock [Member]        
Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from calculation of diluted loss per share 0 0 0 0
Number of Warrants [Member]        
Earnings Per Share [Line Items]        
Anti-dilutive securities excluded from calculation of diluted loss per share 0 0 0 0