Interest income on subscription receivable from shareholders.

No definition available.

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Namespace Prefix:	bq_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Receivable for the issuance of ordinary shares.

+ References

No definition available.

+ Details

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- Definition

Receivables for the issuance of temporary equity.

+ References

No definition available.

+ Details

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Namespace Prefix:	bq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the amount received by a corporation from a shareholder during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount due from owner or affiliate of reporting entity for issuance of shares. Includes, but is not limited to, amount due for award under share-based payment arrangement. Excludes amount due from officer or director.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29,30)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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- Details

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Receivable for issuance of ordinary shares - Additional Information (Detail) ¥ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Aug. 31, 2020 CNY (¥)	Mar. 31, 2020 CNY (¥)	Mar. 31, 2022 CNY (¥)	Mar. 31, 2021 CNY (¥)	Mar. 31, 2022 USD ($)
Receivable For The Issuance Of Ordinary Shares [Line Items]
Proceeds from contributed capital			¥ 262,900	¥ 0
Interest income on subscription receivable from shareholders			14,200	15,400
Receivable for the issuance of ordinary shares			¥ 164,700	¥ 413,377	$ 25,988
Series C+ Preferred Shares [Member]
Receivable For The Issuance Of Ordinary Shares [Line Items]
Receivables for the issuance of temporary equity	¥ 303,000
Series D-1 Preferred Shares and Series D-2 Preferred Shares [Member]
Receivable For The Issuance Of Ordinary Shares [Line Items]
Receivables for the issuance of temporary equity		¥ 95,000