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Note 14 - Leases (Tables)
9 Months Ended
Dec. 31, 2020
Notes Tables  
Assets And Liabilities Lessee [Table Text Block]
   
December 31, 2020
   
March 31, 2020
 
Operating Leases:
     
 
     
 
Right-of-use assets
  $
3,806
    $
3,359
 
Total right-of-use assets    
3,806
     
3,359
 
                 
Lease liabilities - ST
  $
581
    $
439
 
Lease liabilities - LT
   
3,329
     
3,000
 
Total operating lease liabilities    
3,910
     
3,439
 
                 
Weighted-average remaining lease term    
6.04
     
6.91
 
Weighted-average discount rate    
6.76
%    
7.08
%
Lease, Cost [Table Text Block]
   
Three Months Ended
   
Nine Months Ended
 
   
December 31, 2020
   
December 31, 2020
 
Operating Leases:
     
 
     
 
Operating lease costs - fixed   $
226
    $
618
 
Operating lease costs - variable    
31
     
87
 
Short-term lease costs    
338
     
989
 
Total lease costs
   
595
     
1,694
 
   
Three Months Ended
   
Nine Months Ended
 
   
December 31, 2019
   
December 31, 2019
 
Operating Leases:
     
 
     
 
Operating lease costs - fixed
  $
179
    $
535
 
Operating lease costs - variable
   
27
     
73
 
Short-term lease costs
   
164
     
378
 
Total lease costs
   
370
     
986
 
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
   
Operating Leases
 
Year ended March 31,
       
2021   $
216
 
2022    
814
 
2023    
787
 
2024    
733
 
2025    
659
 
Thereafter    
1,597
 
Total minimum lease payments
   
4,806
 
Less: interest
   
896
 
Present value of lease liabilities
   
3,910