Leases - Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2020	Dec. 01, 2019	Nov. 30, 2019
Document Information [Line Items]
Lease right-of-use assets	$ 36,270	$ 31,200
Lease liabilities	$ 38,000	$ 31,200
Weighted-average remaining lease term	4 years 6 months
Weighted-average discount rate (incremental borrowing rate)	5.10%
Lease right-of-use assets obtained in exchange for new lease liabilities	$ 14,229
Cash payments on lease liabilities	$ 11,243
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Homebuilding:
Document Information [Line Items]
Lease right-of-use assets	$ 35,967		$ 0
Lease liabilities	37,668		$ 0
Financial services:
Document Information [Line Items]
Lease right-of-use assets	300
Lease liabilities	$ 300