Employee Benefit Plans	3 Months Ended
	Jun. 30, 2023
Compensation and Retirement Disclosure [Abstract]
13. Employee Benefit Plans	13. Employee Benefit Plans The components of the net periodic benefit costs with respect to postretirement benefits were as follows:       Quarter Ended June 30,     2023   2022     (Unaudited)     (In thousands)           Service cost for benefits earned during the period $ 297 $   332 Other components of net periodic benefit costs:         Interest cost on accumulated postretirement benefit   367   287 Other components   (2)   17 Total other components of net periodic benefit costs   365   304 Net periodic postretirement benefit cost$ 662 $  636