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Investments - Schedule of Strategic Investments Activity (Detail) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]    
Beginning balance $ 7,332,000  
Interest accrued 105,000  
Purchases of strategic investments 3,959,000 $ 4,300,000
Conversion of available-for-sale debt securities into equity securities 3,680,000  
Convertible note acquired in connection with abusiness combination   3,000,000
Unrealized (losses) gains (216,000) 32,000
Impairment losses (137,000) 0
Ending balance 11,043,000 7,332,000
Equity Securities    
Schedule Of Available For Sale Securities [Line Items]    
Beginning balance 3,882,000  
Purchases of strategic investments   3,850,000
Conversion of available-for-sale debt securities into equity securities 3,680,000  
Unrealized (losses) gains (139,000) 32,000
Impairment losses (137,000)  
Ending balance 7,286,000 3,882,000
Limited Partnerships    
Schedule Of Available For Sale Securities [Line Items]    
Purchases of strategic investments 3,609,000  
Unrealized (losses) gains (207,000)  
Ending balance 3,402,000  
Available-for-Sale Debt Securities    
Schedule Of Available For Sale Securities [Line Items]    
Beginning balance 3,450,000  
Interest accrued 105,000  
Purchases of strategic investments 350,000 450,000
Conversion of available-for-sale debt securities into equity securities (3,680,000)  
Convertible note acquired in connection with abusiness combination   3,000,000
Unrealized (losses) gains 130,000  
Ending balance $ 355,000 $ 3,450,000