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Related Party Transactions (Details) - BFLY Operations Inc - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Related Party Transaction [Line Items] |  |
Due from related parties | $ 38 | $ 829
Due to related parties | 154 | 6
Catalyzer 4 Member |  |
Related Party Transaction [Line Items] |  |
Rent expense | 500 | 400
Impairment charge | 1,400 |
Prepaid advance |  | 1,500
Amended And Restated Technology Services Agreement Member |  |
Related Party Transaction [Line Items] |  |
Due from related parties | 40 | 0
Due to related parties | $ 10 | 0
Term for paid or receivable amounts (in days) | 30 days |
Amended And Restated Technology Services Agreement Member | Catalyzer 4 Member |  |
Related Party Transaction [Line Items] |  |
Expenses incurred | $ 5,100 | 7,300
Due from related parties | 0 | 800
Due to related parties | $ 100 | $ 0

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