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DEBT (Tables)
 12 Months Ended
Dec. 31, 2015
DEBT [Abstract]  
Schedule of Long-term debt
Long-term debt consists of:

 
 
December 31,
 
In thousands
 
2015
  
2014
 
First mortgage bonds
 
  
 
 
 
  
 
Series O, 8.17%, due December 29, 2020
 
$
20,000
  
$
20,000
 
Series P, 6.58%, due January 31, 2018
  
25,000
   
25,000
 
Series Q, 4.75%, due December 1, 2043
  
15,400
   
15,400
 
Series R, 5.96%, due December 31, 2028
  
25,000
   
25,000
 
Series S, 6.73%, due December 31, 2033
  
10,800
   
11,400
 
 
  
96,200
   
96,800
 
 
        
State revolving fund loans
        
 
        
4.48%, due August 1, 2021
  
1,711
   
1,954
 
3.57%, due September 1, 2023
  
719
   
796
 
3.64%, due May 1, 2025
  
1,255
   
1,364
 
3.41%, due February 1, 2031
  
2,576
   
2,700
 
3.40%, due July 1, 2032
  
2,475
   
2,585
 
 
  
8,736
   
9,399
 
 
        
Sub-total
  
104,936
   
106,199
 
 
        
Less: current maturities (principal amount)
  
1,289
   
1,245
 
 
        
Total long-term debt
 
$
103,647
  
$
104,954
 
Future Minimum Payments
Payments of principal amounts due during the next five years and thereafter:
 
In thousands
 
2016
  
2017
  
2018
  
2019
  
2020
  
Thereafter
 
First Mortgage bonds
 
$
600
  
$
600
  
$
25,600
  
$
600
  
$
20,600
  
$
48,200
 
State revolving fund loans
  
689
   
714
   
742
   
771
   
801
   
5,019
 
Total payments
 
$
1,289
  
$
1,314
  
$
26,342
  
$
1,371
  
$
21,401
  
$
53,219