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DEBT (Tables)
12 Months Ended
Dec. 31, 2018
DEBT [Abstract]  
Schedule of Long-term debt
Long-term debt consists of:

 
 
December 31,
 
In thousands
 
2018
  
2017
 
First mortgage bonds
      
 
      
Series P, 6.58%, due January 31, 2018
 
$
  
$
25,000
 
Series R, 5.96%, due December 31, 2028
  
25,000
   
25,000
 
Series S, 4.45%, due December 31, 2033
  
9,000
   
9,600
 
Series T, 4.24%, due December 20, 2036
  
40,000
   
40,000
 
Series U, 4.71%, due January 31, 2038
  
25,000
   
 
 
  
99,000
   
99,600
 
 
        
State revolving fund loans
        
 
        
4.48%, due August 1, 2021
  
912
   
1,190
 
3.57%, due September 1, 2023
  
473
   
558
 
3.64%, due May 1, 2025
  
904
   
1,025
 
3.41%, due February 1, 2031
  
2,177
   
2,315
 
3.40%, due July 1, 2032
  
2,121
   
2,243
 
 
  
6,587
   
7,331
 
Notes Payable
        
         
Promissory Note
  
12,000
   
 
         
Sub-total
  
117,587
   
106,931
 
 
        
Less: current maturities (principal amount)
  
1,725
   
1,344
 
 
        
Total long-term debt
 
$
115,862
  
$
105,587
 

Future Minimum Payments
Payments of principal amounts due during the next five years and thereafter:
 
In thousands
 
2019
  
2020
  
2021
  
2022
  
2023
  
Thereafter
 
First Mortgage bonds
 
$
600
  
$
600
  
$
600
  
$
600
  
$
600
  
$
96,000
 
State revolving fund loans
  
773
   
801
   
832
   
533
   
552
   
3,096
 
Promissory note
  
352
   
369
   
391
   
411
   
432
   
10,045
 
Total payments
 
$
1,725
  
$
1,770
  
$
1,823
  
$
1,544
  
$
1,584
  
$
109,141