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Investment Securities Table (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2022
Sep. 30, 2022
Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]      
Debt Securities, Available-for-sale, Amortized Cost   $ 4,750 $ 19,040
Debt Securities, Available-for-sale, Unrealized Loss   0 0
Short-term investment securities   2,919 14,420 [1]
Long-term investment securities   1,831 4,620
Debt Securities, Available-for-sale   4,750 19,040
Corporate Debt Securities      
Debt Securities, Available-for-sale [Line Items]      
Debt Securities, Available-for-sale, Amortized Cost, Current   1,511 14,420
Debt Securities, Available-for-sale, Noncurrent   1,333 4,620
Debt Securities, Available-for-sale, Unrealized Loss $ 0 0 0
Short-term investment securities   1,511 14,420
Long-term investment securities   1,333 $ 4,620
US Treasury Securities      
Debt Securities, Available-for-sale [Line Items]      
Debt Securities, Available-for-sale, Amortized Cost, Current   1,408  
Debt Securities, Available-for-sale, Unrealized Loss   0  
Short-term investment securities   1,408  
US Government Debt Securities      
Debt Securities, Available-for-sale [Line Items]      
Debt Securities, Available-for-sale, Noncurrent   498  
Debt Securities, Available-for-sale, Unrealized Loss   0  
Long-term investment securities   $ 498  
[1] December 31, 2021 balances were derived from audited consolidated financial statements.