Property and Equipment, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	May 31, 2020	May 31, 2019	Nov. 30, 2019
Property, Plant and Equipment [Abstract]
Computer software and equipment	$ 30,137		$ 27,091
Model furnishings and sales office improvements	82,401		82,117
Leasehold improvements, office furniture and equipment	17,366		16,173
Subtotal	129,904		125,381
Less accumulated depreciation	(64,140)		(60,338)
Total	65,764		$ 65,043
Proceeds from sale of building	$ 0	$ 5,804