Employee Benefit Plans (Components of net periodic benefit costs post retirement benefits) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Postemployment Benefits [Abstract]
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