XML 49 R38.htm IDEA: XBRL DOCUMENT v3.22.2
Cash, Concentration of Credit Risk and Fair Value of Financial Instruments - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Concentration Risk [Line Items]              
Gain from observable price changes in orderly transactions of a long-term strategic investment $ 1,600   $ 1,000 $ 1,900      
Non-cash acquisition of patents   $ 30,100     $ 30,100 $ 0  
Patents              
Concentration Risk [Line Items]              
Patent impairment charges     $ 11,000        
Accounts Receivable | Licensee Concentration Risk | Five Largest Licensees              
Concentration Risk [Line Items]              
Accounts receivable percentage             66.00%
Accounts Receivable | Licensee Concentration Risk | Three Largest Licenses              
Concentration Risk [Line Items]              
Accounts receivable percentage         84.00%