Accounts receivables consist of the following at: (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 780	$ 975
US Treasury and Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	53	2
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	638	909
Other Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 89	$ 64