Employee Benefit Plans (Components of net periodic benefit costs post retirement benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Postemployment Benefits [Abstract]
Service cost for benefits earned during the period	$ 245	$ 297	$ 736	$ 891
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit	374	367	1,124	1,102
Other components	2	2	8	8
Total other components of net periodic benefit costs	372	365	1,116	1,094
Net periodic postretirement benefit cost	$ 617	$ 662	$ 1,852	$ 1,985