XML 20 R7.htm IDEA: XBRL DOCUMENT
v3.25.2

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2025 USD ($)
Statement of Cash Flows [Abstract] |
Transaction costs | $ 25

X
- Definition Sale Of Stock, Transaction Costs + References No definition available. + Details
Name: | bslk_SaleOfStockTransactionCosts
Namespace Prefix: | bslk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration