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Cash, Concentration of Credit Risk and Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Patents
Concentration Risk [Line Items]
Patent impairment charges		$ 2.5
Accounts Receivable \| Licensee Concentration Risk \| Four Largest Licensees
Concentration Risk [Line Items]
Accounts receivable percentage	85.00%		84.00%