Commitment and Contingencies - Narrative (Details) $ in Millions	Jan. 07, 2026 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Litigation settlement, amount awarded to other party	$ 7.5
Litigation settlement, amount awarded to other party, funded by insurance procees	$ 7.4

Litigation Settlement, Amount Awarded to Other Party, Funded From Insurance Proceeds

No definition available.

Name:	bksy_LitigationSettlementAmountAwardedToOtherPartyFundedFromInsuranceProceeds
Namespace Prefix:	bksy_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration