Operating Leases (Details) $ in Thousands		12 Months Ended
	Oct. 01, 2016 ft²	Nov. 30, 2019 USD ($)	Nov. 30, 2018 USD ($)	Nov. 30, 2017 USD ($)
Operating leases of lessee, future minimum rental payments
Rental expense		$ 146	$ 149	$ 156
Cullman And Ernst Group
Operating leases of lessee, future minimum rental payments
Term of sublease	10 years
Area of subleased property | ft²	1,920
Cullman And Ernst Group | General and Administrative Expense
Operating leases of lessee, future minimum rental payments
Rental expense		126	$ 124	$ 124
Leasing of industrial, flex and office space and the lease of the farm in Florida
Operating leases of lessor, future minimum rentals to be received
2020		33,022
2021		30,369
2022		22,999
2023		17,728
2024		14,694
Later years		31,610
Total		150,422
Corporate headquarters
Operating leases of lessee, future minimum rental payments
2020		126
2021		126
2022		133
2023		131
2024		131
Later years		250
Total minimum lease payments		$ 897