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Subsequent events - Additional Information (Detail)	Jun. 25, 2020
Subsequent Events [Abstract]
Stockholders equity stock consolidation	1-for-10 share

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- Definition

Stockholders equity stock consolidation.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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