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Note 6 - Long-term Debt (Tables)
12 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
   
2019
   
2018
 
   
(In thousands)
 
Revolving credit facility, 4.00% and 3.35%, due through 2022
  $
155,278
    $
293,459
 
Farm Credit term loan, 4.77% and 4.48%, due 2022
   
99,906
     
99,871
 
Bluegrass tax exempt bonds, 3.19% and 3.11%, due 2033
   
10,000
     
9,983
 
Lease financing obligations, 2.62%, due through 2020
   
-
     
4,028
 
Secured promissory note, 6.35%, due through 2020
   
262
     
1,046
 
Economic development note, 2.00%, due through 2021
   
583
     
793
 
Other
   
216
     
216
 
Total    
266,245
     
409,396
 
Less current portion
   
345
     
1,663
 
Long-term debt   $
265,900
    $
407,733
 
Schedule of Maturities of Long-term Debt [Table Text Block]
Years ending March 31:
       
2020
  $
345
 
2021
   
500
 
2022
   
255,184
 
2023
   
-
 
2024
   
-
 
Thereafter
   
10,216
 
Total
  $
266,245