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RETIREMENT PLANS (Tables)
 6 Months Ended
Sep. 30, 2017
Retirement Benefits [Abstract]  
Schedule of Net Pension Benefit
The following tables set forth the combined net pension benefit recognized in our condensed consolidated financial statements for all plans (in thousands):
 
Three Months Ended September 30,
 
2017
 
2016
Service cost, benefits earned during the period
$
14

 
$
—

Interest cost on projected benefit obligation
628

 
600

Expected return on assets
(980
)
 
(786
)
Amortization of net actuarial loss
7

 
(1
)
Net pension benefit
$
(331
)
 
$
(187
)

 
Six Months Ended September 30,
 
2017
 
2016
Service cost, benefits earned during the period
$
28

 
$
—

Interest cost on projected benefit obligation
1,255

 
1,269

Expected return on assets
(1,961
)
 
(1,804
)
Amortization of net actuarial loss
14

 
7

Net pension benefit
$
(664
)
 
$
(528
)