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Earnings (Loss) Per Share - Additional Information (Detail) - shares
3 Months Ended 6 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Common stock subject to repurchase or forfeiture 0 0 0 0