XML 62 R43.htm IDEA: XBRL DOCUMENT v3.22.2.2
Financial Instruments - Additional Information (Detail)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
Security
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Security
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Schedule Of Available For Sale Securities [Line Items]          
Number of securities in an unrealized loss position | Security 13   13    
Unrealized gains (losses) from equity securities     $ 162 $ 2,383  
Equity securities          
Schedule Of Available For Sale Securities [Line Items]          
Investments in marketable equity securities with readily determinable fair values $ 6,900   6,900   $ 6,700
Unrealized gains (losses) from equity securities $ 600 $ (6,000) $ 200 $ 2,400