Employee Benefit Plans (Table Text Block)

3 Months Ended

6 Months Ended

Sep. 30, 2015

Sep. 30, 2015

Disclosure Text Block Supplement [Abstract]

Net period benefit and postretirement costs

		Quarter Ended September 30,
		2015		2014
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	240	$	206
Interest cost on accumulated postretirement benefit		188		180
Other components		9		4
Net periodic postretirement benefit cost	$	437	$	390

		Six Months Ended September 30,
		2015		2014
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	480	$	413
Interest cost on accumulated postretirement benefit		376		360
Other components		18		7
Net periodic postretirement benefit cost	$	874	$	780