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Revenue (Tables)
12 Months Ended
Dec. 31, 2022
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
Our disaggregated revenues were as follows (in thousands):
Year Ended December 31,
202220212020
Royalties$360,475 $203,900 $88,596 
Product sales, net
  Sales of bulk rHuPH2082,084 80,960 38,956 
Sale of proprietary products72,849 23,264 17,031 
Sale of Device Partnered Products36,097 — — 
Total product sales, net$191,030 $104,224 $55,987 
Revenues under collaborative agreements:
  Upfront license and target nomination fees30,000 42,000 37,264 
  Event-based development milestones and regulatory milestone and other fees59,000 42,000 69,500 
  Sales-based milestones10,000 50,000 15,000 
  Device Licensing and development revenue9,611 1,186 1,247 
Total revenues under collaborative agreements$108,611 $135,186 $123,011 
Total revenue$660,116 $443,310 $267,594 
Contract with Customer, Asset and Liability
Accounts receivable, other contract assets and deferred revenues (contract liabilities) from contracts with customers, including collaboration partners, consisted of the following (in thousands):
December 31, 2022December 31, 2021
Accounts receivable, net$186,970 $90,975 
Other contract assets$44,102 $— 
Deferred revenues$5,499 $4,276