Fair Value Measurements (Carrying and Estimated Fair Values within Fair Value Hierarchy) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Assets
Receivables, Fair Value Disclosure	$ 177,602	$ 146,736
Mortgage loans, net	579,767	444,957
Other investments	18,917	109,009
Total	776,286	700,702
Liabilities
Notes, loans and leases payable, gross	5,850,346	5,710,735
Total	5,850,346	5,710,735
Level 1 [Member]
Assets
Receivables, Fair Value Disclosure
Mortgage loans, net
Other investments
Total
Liabilities
Notes, loans and leases payable, gross
Total
Level 2 [Member]
Assets
Receivables, Fair Value Disclosure
Mortgage loans, net
Other investments
Total
Liabilities
Notes, loans and leases payable, gross	5,850,346	5,710,735
Total	5,850,346	5,710,735
Level 3 [Member]
Assets
Receivables, Fair Value Disclosure	177,602	146,736
Mortgage loans, net	579,767	444,957
Other investments	18,917	109,009
Total	776,286	700,702
Carrying Value [Member]
Assets
Receivables, Fair Value Disclosure	177,602	146,736
Mortgage loans, net	604,481	466,531
Other investments	18,917	109,009
Total	801,000	722,276
Liabilities
Notes, loans and leases payable, gross	6,304,038	6,143,350
Total	$ 6,304,038	$ 6,143,350