Employee Benefit Plans (Table Text Block)

9 Months Ended

Dec. 31, 2017

Disclosure Text Block Supplement [Abstract]

Net period benefit and postretirement costs

		Quarter Ended December 31,
		2017		2016
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	269	$	256
Interest cost on accumulated postretirement benefit		218		204
Other components		13		22
Net periodic postretirement benefit cost	$	500	$	482

		Nine Months Ended December 31,
		2017		2016
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	805	$	769
Interest cost on accumulated postretirement benefit		652		611
Other components		43		66