Employee Benefit Plans (Table Text Block)

3 Months Ended

6 Months Ended

Sep. 30, 2023

Sep. 30, 2023

Compensation and Retirement Disclosure [Abstract]

Components of Net Periodic Post Retirement Benefit Cost

		Quarter Ended September 30,
		2023		2022
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	297	$	331
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit		368		287
Other components		(4)		17
Total other components of net periodic benefit costs		364		304
Net periodic postretirement benefit cost	$	661	$	635

		Six Months Ended September 30,
		2023		2022
		(Unaudited)
		(In thousands)
Service cost for benefits earned during the period	$	594	$	663
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit		735		574
Other components		(6)		34
Total other components of net periodic benefit costs		729		608
Net periodic postretirement benefit cost	$	1,323	$	1,271