Post Retirement Benefit Cost (Table Text Block)

12 Months Ended

Mar. 31, 2015

Table Text Block [Abstract]

Components of Net Periodic Post Retirement Benefit Cost

		Years Ended March 31,
		2015		2014		2013
		(In thousands)
Service cost for benefits earned during the period	$	827	$	726	$	622
Interest cost on accumulated postretirement benefit		720		564		554
Other components		14		19		4
Net periodic postretirement benefit cost	$	1,561	$	1,309	$	1,180