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Defined Benefit Pension and Other Postretirement Benefit Plans (Tables)
 9 Months Ended
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Schedule of components of net periodic benefit (income) costs relating to pension and other postretirement benefit plans
components of net periodic benefit (income) costs relating to the Company’s pension and other postretirement benefit plans are as follows for the quarters ended December 31, 2015 and 2014 (amounts in thousands):
 
Pension
 
Post-retirement Benefit Plan
 
Quarters Ended December 31,
 
Quarters Ended December 31,
 
2015
 
2014
 
2015
 
2014
Net service cost
$
404

 
$
338

 
$
—

 
$
—

Interest cost
338

 
478

 
3

 
9

Expected return on net assets
(105
)
 
(124
)
 
—

 
—

Amortization:
 

 
 

 
 

 
 

Actuarial (gain) loss
197

 
81

 
(64
)
 
(36
)
Prior service cost
15

 
4

 
—

 
—

Total net periodic benefit (income) costs
$
849

 
$
777

 
$
(61
)
 
$
(27
)

The components of net periodic benefit (income) costs relating to the Company’s pension and other postretirement benefit plans are as follows for the nine month periods ended December 31, 2015 and 2014 (amounts in thousands):
 
Pension
 
Post-retirement Benefit Plan
 
Nine Month Periods Ended December 31,
 
Nine Month Periods Ended December 31,
 
2015
 
2014
 
2015
 
2014
Net service cost
$
1,514

 
$
1,014

 
$
—

 
$
—

Interest cost
1,013

 
1,435

 
14

 
21

Expected return on net assets
(315
)
 
(371
)
 
—

 
—

Amortization:
 

 
 

 
 

 
 

Actuarial (gain) loss
591

 
213

 
(143
)
 
(140
)
Prior service cost
44

 
13

 
—

 
—

Total net periodic benefit (income) costs
$
2,847

 
$
2,304

 
$
(129
)
 
$
(119
)