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Prepaid Expenses and Other Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Prepaid Expenses and Other Assets    
Prepaid insurance $ 571 $ 575
Recoupable deposits and other 551 570
Prepaid expenses and other assets 1,122 $ 1,145
Receivables for Reimbursement of Costs $ 300