Quarterly report pursuant to Section 13 or 15(d)

Loan Payable (Details)

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Loan Payable (Details) - Mortgage Agreement [Member] - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Nov. 27, 2018
Jan. 31, 2020
Loan Payable (Details) [Line Items]    
Debt Instrument, Face Amount $ 4,500  
Debt Instrument Maturity Period   10 years
Debt Instrument, Interest Rate, Stated Percentage 5.09%  
Debt Instrument, Periodic Payment $ 30  
Amortization of Debt Issuance Costs $ 72  
Unamortized Debt Issuance Expense   $ 64
Operating Leases, Future Minimum Payments Due   4,300
Cash Collateral for Borrowed Securities   $ 750