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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]        
Deferred tax assets, net of valuation allowance   $ 49,400   $ 49,400
Benefit from income taxes $ 387 $ 49,886 $ 235 $ 49,871