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EMPLOYEE BENEFIT PLANS (Tables)
6 Months Ended
Sep. 30, 2019
Defined Benefit Plan [Abstract]  
Schedule of components of net periodic pension cost
The following table provides a detail of the components of net periodic pension cost (in thousands):
 
 
Three Months Ended
 September 30,
 
Six Months Ended
 September 30,
 
 
2019
 
2018
 
2019
 
2018
Service cost for benefits earned during the period
 
$
152

 
$
210

 
$
311

 
$
429

Interest cost on pension benefit obligation
 
2,799

 
3,221

 
5,718

 
6,585

Expected return on assets
 
(3,841
)
 
(4,247
)
 
(7,846
)
 
(8,681
)
Prior service costs
 
34

 

 
69

 

Amortization of unrecognized losses
 
1,976

 
1,970

 
4,037

 
4,027

Net periodic pension cost
 
$
1,120

 
$
1,154

 
$
2,289

 
$
2,360