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Operating segments - Additional Information (Detail)	12 Months Ended
	Jun. 30, 2021 Major_Customer Segments
Disclosure of operating segments [abstract]
Number of operating segments | Segments	0
Number of major customers | Major_Customer	2
Concentration risk major customer percentage	10.00%

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- Definition

Concentration risk major customer percentage.

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- Definition

Number of major customers.

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- Definition

Number of operating segments.

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