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Net Loss Per Share (Details)	12 Months Ended
Net Loss Per Share (Details)	Mar. 31, 2025 shares
Net Loss Per Share [Abstract]
Share Options

X

- Definition

Share Options.

+ References

No definition available.

+ Details

Name:	bq_ShareOptions
Namespace Prefix:	bq_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration