Employee Benefit Plans (Table Text Block)

9 Months Ended

Dec. 31, 2018

Disclosure Text Block Supplement [Abstract]

Net period benefit and postretirement costs

		Quarter Ended December 31,
		2018		2017
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	277	$	269
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit		235		218
Other components		18		13
Total other components of net periodic benefit costs		253		231
Net periodic postretirement benefit cost	$	530	$	500

		Nine Months Ended December 31,
		2018		2017
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	831	$	805
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit		707		652
Other components		53		43
Total other components of net periodic benefit costs		760		695
Net periodic postretirement benefit cost	$	1,591	$	1,500