Shareholders' Equity - Additional Information (Detail) - USD ($)	3 Months Ended	6 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-based compensation, amount recognized	$ 0	$ 0	$ 0	$ 0
Options granted	0		0
Options exercised	30,000		30,000

Number of share options (or share units) exercised during the current period.

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Balance Type:	na
Period Type:	duration