Employee Benefit Plans (Components of net periodic benefit costs post retirement benefits) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Postemployment Benefits [Abstract]
Service cost for benefits earned during the period	$ 332	$ 350	$ 995	$ 1,051
Other components of net periodic benefit costs:
Interest cost on accumulated postretirement benefit	287	227	861	681
Other components	17	53	51	159
Total other components of net periodic benefit costs	304	280	912	840
Net periodic postretirement benefit cost	$ 636	$ 630	$ 1,907	$ 1,891