Derivatives (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Attributable to Parent [Abstract]
Interest expense	$ 71,498	$ 63,943	$ 138,716	$ 124,541
Investment Income, Net			6,500	700
Decrease, fair value, cash flow hedges
AOCI Attributable to Parent [Abstract]
Interest expense			200	7,200
Reclassified AOCI
AOCI Attributable to Parent [Abstract]
Interest expense			200	$ 900
Reclassification net gains Interest Rate Contracts
AOCI Attributable to Parent [Abstract]
Interest expense			$ 5,800