XML 42 R30.htm IDEA: XBRL DOCUMENT v3.7.0.1
BENEFIT PLANS (Tables)
 6 Months Ended
Jun. 30, 2017
BENEFIT PLANS [Abstract]  
Net Periodic Benefit Cost
The net periodic benefit cost for the three and six months ended June 30, 2017 and 2016 is as follows:

  
Pension Benefits
  
Post-retirement Benefits
 
  
Three Months Ended
June 30,
  
Six Months Ended
June 30,
  
Three Months Ended
June 30,
  
Six Months Ended
 June 30,
 
(000's omitted)
 
2017
  
2016
  
2017
  
2016
  
2017
  
2016
  
2017
  
2016
 
Service cost
 
$
1,067
  
$
1,027
  
$
2,106
  
$
2,052
  
$
0
  
$
0
  
$
0
  
$
0
 
Interest cost
  
1,449
   
1,406
   
2,812
   
2,812
   
19
   
20
   
38
   
41
 
Expected return on plan assets
  
(3,407
)
  
(2,961
)
  
(6,529
)
  
(5,921
)
  
0
   
0
   
0
   
0
 
Amortization of unrecognized net loss
  
209
   
377
   
472
   
754
   
2
   
(1
)
  
4
   
(3
)
Amortization of prior service cost
  
17
   
11
   
30
   
22
   
(45
)
  
(45
)
  
(89
)
  
(89
)
Net periodic benefit cost (income)
 
$ 
(665
)
 
$ 
(140
)
 
$ 
(1,109
)
 
$ 
(281
)
 
$ 
(24
)
 
$ 
(26
)
 
$ 
(47
)
 
$ 
(51
)