Commitments and Contingencies (Details Textual 1) $ in Millions	Apr. 30, 2020 USD ($) luxury_homes
Backlog Information [Abstract]
Number of homes to be delivered (in ones) | luxury_homes	6,428
Aggregate sales value of outstanding homes to be delivered	$ 5,490.0
Oct 2019 Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Outstanding letter of credit	164.8
Surety Bond Construction Improvements [Member]
Loss Contingencies [Line Items]
Outstanding Surety Bonds Amount	823.2
Amount of work remains on improvements in the Company's various communities	390.5
Surety Bond Other Obligations [Member]
Loss Contingencies [Line Items]
Additional outstanding surety bonds	$ 181.3