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Business Combination - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 24, 2022 | Jun. 30, 2023 | Dec. 31, 2022
Business Acquisition [Line Items] |  |  |
Adjustment, accounts receivable, net |  | $ 200 |
Antares Pharma, Inc |  |  |
Business Acquisition [Line Items] |  |  |
Purchase consideration | $ 1,045,668 |  |
Consideration transferred, cash paid per acquiree share (usd per share) | $ 5.60 |  |
Consideration related to acquiree closing indebtedness settled | $ 19,683 |  |
Consideration for seller transaction costs paid by Halozyme | 22,906 |  |
Transaction costs |  |  | $ 21,900
Adjustment, accrued expenses |  | 2,000 |
Adjustments, deferred tax liabilities, net |  | $ 5,500 |
Pro forma revenue of acquiree since acquisition date |  |  | 112,700
Proforma net loss of acquiree since acquisition date |  |  | $ 67,600
Antares Pharma, Inc | Revolving Credit Facility |  |  |
Business Acquisition [Line Items] |  |  |
Credit facility, maximum borrowing capacity | 350,000 |  |
Antares Pharma, Inc | Term Loan Facility |  |  |
Business Acquisition [Line Items] |  |  |
Credit facility, maximum borrowing capacity | $ 250,000 |  |

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