Annual report pursuant to Section 13 and 15(d)

Leases (Details textual)

v3.20.1
Leases (Details textual) - USD ($)
 12 Months Ended
Jan. 31, 2023
Dec. 01, 2019
Mar. 31, 2020
Mar. 31, 2019
Apr. 01, 2019
Subsequent Event [Line Items]          
Operating Leases, Rent Expense, Net     $ 900,000 $ 900,000  
Operating Lease, Payments     $ 800,000    
Operating Lease, Weighted Average Remaining Lease Term     2 years 9 months 18 days    
Operating Lease, Right-of-Use Asset     $ 628,000   $ 1,300,000
Operating Lease, Liability     $ 589,000    
Operating Lease, Weighted Average Discount Rate, Percent     4.30%    
New OH lease [Member]          
Subsequent Event [Line Items]          
Operating Lease Commencement Date   Dec. 01, 2019      
Lessee, Operating Lease, Term of Contract   63 months      
New OH lease [Member] | Subsequent Event [Member]          
Subsequent Event [Line Items]          
OperatingLeaseEarlyTerminationPenalty $ 70,000        
Liabilities, Total [Member]          
Subsequent Event [Line Items]          
Operating Lease, Liability     $ 589,000   $ 1,200,000