Long-Term Debt - Narrative (Detail)		3 Months Ended
	Sep. 27, 2016 USD ($) extention_option	Feb. 28, 2019 USD ($) Year	Nov. 30, 2018 USD ($)
Debt Disclosure [Line Items]
Long-term Debt, Gross		$ 257,068,000	$ 257,305,000
Finance costs, net of accumulated amortization		2,900,000	$ 3,000,000
4.63 percent Senior Notes
Debt Disclosure [Line Items]
Proceeds from long-term debt		$ 65,000,000.0
Debt, interest rate		4.63%	4.63%
Frequency of periodic payment		semi-annual
Debt Instrument, Covenant, Leverage Ratio, Maximum		3.50
Debt Instrument, Covenant, Interest Coverage Ratio, Maximum		2.0
Debt Instrument, Covenant Consolidated Net Worth, Percentage, Maximum		15.00%
Long-term debt		$ 65,000,000
Long-term Debt, Gross		$ 65,000,000	$ 65,000,000
4.63 percent Senior Notes | Semi Annual Payment, First Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		January 18
4.63 percent Senior Notes | Semi Annual Payment, Second Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		July 18
3.95 percent Senior Notes
Debt Disclosure [Line Items]
Proceeds from long-term debt		$ 100,000,000.0
Debt, interest rate		3.95%	3.95%
Frequency of periodic payment		semi-annual
Debt Instrument, Covenant, Leverage Ratio, Maximum		3.50
Debt Instrument, Covenant Consolidated Net Worth, Percentage, Maximum		15.00%
Long-term debt		$ 100,000,000
Long-term Debt, Gross		$ 100,000,000	$ 100,000,000
3.95 percent Senior Notes | Semi Annual Payment, First Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		March 13
3.95 percent Senior Notes | Semi Annual Payment, Second Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		September 13
6.25 percent Term Loan
Debt Disclosure [Line Items]
Debt, interest rate		6.25%	6.25%
Long-term debt		$ 45,800,000
Long-term Debt, Gross		45,764,000	$ 46,014,000
Debt, monthly payment		$ 323,000
Debt term | Year		25
TIF bond debt service funding commitment
Debt Disclosure [Line Items]
Long-term Debt, Gross		$ 46,304,000	$ 46,291,000
Principal payment date		October 1
TIF bond debt service funding commitment | Semi Annual Payment, First Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		April 1
TIF bond debt service funding commitment | Semi Annual Payment, Second Payment
Debt Disclosure [Line Items]
Debt Instrument Interest Rate Payment Date		October 1
TIF bond debt service funding commitment | Term Bond Due December 1st 2027
Debt Disclosure [Line Items]
Debt, interest rate		6.75%
Long-term debt		$ 46,600,000
Debt, maturity date		Dec. 01, 2027
2016 Credit Facility
Debt Disclosure [Line Items]
Debt Instrument, Covenant, Leverage Ratio, Maximum	3.50
Debt Instrument, Covenant, Interest Coverage Ratio, Maximum	2.5
Credit Facility current borrowing capacity	$ 300,000,000.0
Debt maturity period	5 years
Number of extension options available | extention_option	2
Duration of each extension option	1 year
Credit Facility potential borrowing capacity	$ 500,000,000.0
Debt instrument basis points	0.50%
Credit Facility amount outstanding		$ 0
Finance costs, net of accumulated amortization		$ 1,300,000
2016 Credit Facility | Minimum
Debt Disclosure [Line Items]
Unused capacity commitment fee (percent)	0.125%
2016 Credit Facility | Maximum
Debt Disclosure [Line Items]
Unused capacity commitment fee (percent)	0.225%
2016 Credit Facility | Standby Letters of Credit
Debt Disclosure [Line Items]
Credit Facility current borrowing capacity	$ 25,000,000.0
2016 Credit Facility | Swing Line Loan
Debt Disclosure [Line Items]
Credit Facility current borrowing capacity	$ 10,000,000.0
Four Quarters Ending after any Permitted Acquisition
Debt Disclosure [Line Items]
Debt Instrument, Covenant, Leverage Ratio, Maximum	4.0
London Interbank Offered Rate (LIBOR) | 2016 Credit Facility
Debt Disclosure [Line Items]
Debt instrument basis points	1.00%
London Interbank Offered Rate (LIBOR) | 2016 Credit Facility | Minimum
Debt Disclosure [Line Items]
Debt instrument basis points		1.00%
London Interbank Offered Rate (LIBOR) | 2016 Credit Facility | Maximum
Debt Disclosure [Line Items]
Debt instrument basis points		1.625%