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Accounts Receivable
6 Months Ended
Jun. 30, 2022
Receivables [Abstract]  
Accounts Receivable Accounts ReceivableAccounts receivable includes reimbursement requests outstanding from the DOE awards and are recognized as eligible costs are incurred. At June 30, 2022 and December 31, 2021, accounts receivable are presented net of $1,776 and $10,237, respectively, of related deferred DOE cost share liabilities that have the right of offset. Reimbursement under the awards are included in Department of Energy Cost Share in the Statement of Operations.