Sale of Assets	3 Months Ended
Sale of Assets	Mar. 31, 2022
Sale Of Assets [Abstract]
Sale of Assets	Sale of AssetsIn December 2021, we entered into an asset purchase agreement (the “Asset Purchase Agreement”) with Otter Pharmaceuticals, LLC (a subsidiary of Assertio Holdings, Inc., together with Assertio Holdings, Inc., as guarantor, individually and collectively referred to as “Otter”) to sell certain worldwide assets used in the operation of the OTREXUP® product line for $44,021 of which we received $18,000 at closing and will receive the remaining $26,021 in installments over a one-year period. As of December 31, 2021, we recorded an increase to the purchase price for estimated changes in closing inventory to be transferred. The Asset Purchase Agreement included the transfer of OTREXUP® patents, trademark and intellectual property, product finished goods and sample inventory, and certain other contracts associated with the OTREXUP® product line. Subject to the terms of the OTREXUP® Asset Purchase Agreement, we generally retained ownership (and related liabilities) of assets not solely related to the OTREXUP® product line. We also agreed via the execution of a separate supply agreement to continue to manufacture and supply OTREXUP® and sample products to Otter at cost plus mark-up. Further, we entered into a license agreement with Otter pursuant to which we granted Otter a worldwide, exclusive, fully paid-up license to certain patents relating to OTREXUP® that may relate to our other products.We recorded the entire $38,591 gain on sale of assets in the Consolidated Statements of Operations for the year ended December 31, 2021 as all requirements of the agreement were determined to have been met and it was probable that a significant reversal of the gain would not occur. The gain included the purchase price of $44,021 adjusted for estimated changes in closing inventory to be transferred less the net book value of the assets sold and direct transaction costs. The remaining $26,311 purchase price to be received was classified as other receivables in the Consolidated Balance Sheets as of December 31, 2021, and we recognized $17,825 of net proceeds from the sale of assets in the Statements of Cash Flows for the year ended December 31, 2021. As of March 31, 2022, the receivable was reduced to $26,006 for payments to be made by Otter directly to our vendor for inventory purchased in the transaction.

ANTARES PHARMA, INC. 10-Q