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Composition of Certain Financial Statement Captions
12 Months Ended
Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]  
Composition of Certain Financial Statement Captions Composition of Certain Financial Statement Captions
December 31,
20212020
Balance Sheets
Accounts payable and other accrued liabilities
Accounts payable$9,248 $14,662 
Accrued liabilities25,300 6,237 
$34,548 $20,899