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Employee Benefit Plans
3 Months Ended
Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract]  
13. Employee Benefit Plans

The components of the net periodic benefit costs with respect to postretirement benefits were as follows:

 

 

Quarter Ended June 30,

 

 

2017

 

2016

 

 

(Unaudited)

 

 

(In thousands)

 

 

 

 

 

Service cost for benefits earned during the period

$

268

$ 

256

Interest cost on accumulated postretirement benefit

 

217

 

204

Other components

 

15

 

22

Net periodic postretirement benefit cost

$

500

$ 

482