XOMA Corporation Quarterly report pursuant to Section 13 or 15(d)

Royalty and Commercial Payment Purchase Agreements - Summary of Royalty Receivable Activities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Agreements
Short-term royalty receivable, Balance as of beginning of period	$ 14,215
Short-term royalty receivable, Balance as of end of period	9,819
Long-term royalty receivable, Balance as of beginning of period	57,952
Long-term royalty receivable, Balance as of end of period	65,577
Talphera
Agreements
Acquisition of royalty and commercial payment receivables, Long-Term	8,000
Receipt of royalty and commercial payments, Long-Term	(25)
Affitech
Agreements
Receipt of royalty and commercial payments, Short-Term	(7,396)
Recognition of contingent consideration, Short-Term	3,000
Aptevo
Agreements
Receipt of royalty and commercial payments, Short-Term	(350)
Reclassification to short-term royalty and commercial payment receivables, Short-Term	350
Reclassification to short-term royalty and commercial payment receivables, Long-Term	$ (350)