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Revenue (Tables)
12 Months Ended
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
Our disaggregated revenues were as follows (in thousands):
Year Ended December 31,
202320222021
Royalties$447,865 $360,475 $203,900 
Product sales, net
Sales of bulk rHuPH20
115,442 82,084 80,960 
Sale of proprietary products130,834 72,849 23,264 
Sale of device partnered products
54,578 36,097 — 
Total product sales, net300,854 191,030 104,224 
Revenues under collaborative agreements:
Upfront license and target nomination fees
2,000 30,000 42,000 
Event-based development and regulatory milestones and other fees
69,000 59,000 42,000 
Sales-based milestones
— 10,000 50,000 
Device licensing and development revenue
9,534 9,611 1,186 
Total revenues under collaborative agreements80,534 108,611 135,186 
Total revenues
$829,253 $660,116 $443,310 
Contract with Customer, Asset and Liability
Accounts receivable, other contract assets and deferred revenues (contract liabilities) from contracts with customers, including partners, consisted of the following (in thousands):
December 31, 2023December 31, 2022
Accounts receivable, net$233,254 $186,970 
Other contract assets956 44,102 
Deferred revenues4,048 —