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Commitments and Contingencies (Details Textual 1)
$ in Millions
Apr. 30, 2018
USD ($)
luxury_homes
Backlog Information [Abstract]  
Number of homes to be delivered (in ones) | luxury_homes 7,030
Aggregate sales value of outstanding homes to be delivered $ 6,360.0
May 2016 Revolving Credit Facility [Member]  
Loss Contingencies [Line Items]  
Outstanding letter of credit 146.4
Surety Bond Construction Improvements [Member]  
Loss Contingencies [Line Items]  
Outstanding Surety Bonds Amount 735.8
Amount of work remains on improvements in the Company's various communities 363.3
Surety Bond Other Obligations [Member]  
Loss Contingencies [Line Items]  
Additional outstanding surety bonds $ 178.3