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Fair Value Measurements - Schedule Of Changes In The Fair Value Of Warrant Liabilities (Parenthetical) (Details) $ in Millions	5 Months Ended
	Mar. 31, 2021 USD ($)
Changes IN Fair Value Of Warrant Liabilities [Abstract]
Fair value measurement with unobservable inputs reconciliation recurring basis liabilities transfers out of level 3	$ 9.0

X

- Definition

Changes IN Fair Value Of Warrant Liabilities.

+ References

No definition available.

+ Details

Name:	bark_ChangesInFairValueOfWarrantLiabilitiesAbstract
Namespace Prefix:	bark_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(3)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransfersOutOfLevel3
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration