Employee Benefit Plans (Table Text Block)

3 Months Ended

9 Months Ended

Dec. 31, 2015

Dec. 31, 2015

Disclosure Text Block Supplement [Abstract]

Net period benefit and postretirement costs

		Quarter Ended December 31,
		2015		2014
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	240	$	207
Interest cost on accumulated postretirement benefit		188		180
Other components		9		3
Net periodic postretirement benefit cost	$	437	$	390

		Nine Months Ended December 31,
		2015		2014
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	720	$	620
Interest cost on accumulated postretirement benefit		564		540
Other components		27		10
Net periodic postretirement benefit cost	$	1,311	$	1,170