Commitments and Contingencies (Details Textual 1) $ in Millions	Apr. 30, 2019 USD ($) luxury_homes
Backlog Information [Abstract]
Number of homes to be delivered (in ones) | luxury_homes	6,467
Aggregate sales value of outstanding homes to be delivered	$ 5,660.0
May 2016 Revolving Credit Facility [Member]
Loss Contingencies [Line Items]
Outstanding letter of credit	179.3
Surety Bond Construction Improvements [Member]
Loss Contingencies [Line Items]
Outstanding Surety Bonds Amount	734.2
Amount of work remains on improvements in the Company's various communities	334.5
Surety Bond Other Obligations [Member]
Loss Contingencies [Line Items]
Additional outstanding surety bonds	$ 175.4