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Cash Equivalents
 9 Months Ended
Sep. 30, 2022
Cash and Cash Equivalents [Abstract]  
Cash Equivalents Cash Equivalents
The following is a summary of cash equivalents (in thousands):
September 30, 2022Cost BasisUnrealized
Holding
Gains		Estimated
Market
Value
Cash equivalents:
Money market funds$10,051 $— $10,051 
Total assets$10,051 $— $10,051 
December 31, 2021Cost BasisUnrealized
Holding
Gains		Estimated
Market
Value
Cash equivalents:
Money market funds$10,015 $— $10,015 
Total assets$10,015 $— $10,015 
There were no gross realized gains or losses on cash equivalents for the three and nine months ended September 30, 2022 and 2021.