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Note 5 - Leases (Tables)
6 Months Ended
Sep. 30, 2019
Notes Tables  
Lease Assets and Liabilities [Table Text Block]
Lease Assets and Liabilities
Balance Sheet Location
 
September 30, 2019
 
Operating lease ROU asset
Other assets
  $
1,205
 
Current operating lease liabilities
Other accrued expenses
   
686
 
Noncurrent operating lease liabilities
Other long-term liabilities
   
441
 
Term and Discount Rates [Table Text Block]
   
September 30, 2019
 
Weighted average remaining lease term in years
   
1.9
 
Weighted average discount rate
   
3.94
%
Lease, Cost [Table Text Block]
   
Three Months Ended September 30, 2019
   
Six Months Ended September 30, 2019
 
Operating lease expense
  $
178
    $
358
 
Variable lease expense
   
22
     
49
 
Total lease expense
  $
200
    $
407
 
Supplemental Cash Flow Information Related to Leases [Table Text Block]
   
Three Months Ended September 30, 2019
   
Six Months Ended September 30, 2019
 
Cash paid for amounts included in the measurements of lease liabilities
  $
191
    $
385
 
Operating lease assets obtained in exchange for operating lease obligations
   
--
     
73
 
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Remainder of fiscal year 2020
  $
372
 
2021
   
540
 
2022
   
215
 
2023
   
24
 
Future value of lease liabilities
   
1,151
 
Less: imputed interest
   
24
 
Present value of lease liabilities
  $
1,127
 
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Fiscal year ending March 31,
     
 
2020
  $
653
 
2021
   
443
 
2022
   
230
 
2023
   
48
 
Total future lease payments
  $
1,374