Quarterly report pursuant to Section 13 or 15(d)

Schedule of Cash, Cash Equivalents and Restricted Cash (Details)

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Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($)
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Cash and Cash Equivalents [Abstract]        
Cash and cash equivalents $ 19,328,135 $ 21,029,806 $ 23,383,000 $ 12,432,000
Restricted cash included in current/long term assets 250,000 250,000 336,000 336,000
Cash, cash equivalents and restricted cash in the statement of cash flows $ 19,578,000 $ 21,280,000 $ 23,719,000 $ 12,768,000