Long-Term Debt - Narrative (Detail)	3 Months Ended
Feb. 29, 2016 USD ($) Year	Nov. 30, 2015 USD ($)
Debt Disclosure [Line Items]
Long-term Debt, Gross	$ 268,181,000	$ 268,372,000
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	$ 48,500,000
Long-term Debt, Gross	48,519,000	$ 48,726,000
Debt, monthly payment	$ 323,000
Debt term \| Year	25
TIF bond debt service funding commitment
Debt Disclosure [Line Items]
Long-term Debt, Gross	$ 54,662,000	$ 54,646,000
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 2017
Debt Disclosure [Line Items]
Debt, interest rate	6.15%
Long-term debt	$ 5,395,000
Debt, maturity date	Dec. 01, 2017
TIF bond debt service funding commitment \| Term Bond Due December 1st 2027
Debt Disclosure [Line Items]
Debt, interest rate	6.75%
Long-term debt	$ 49,700,000.0
Debt, maturity date	Dec. 01, 2027
2012 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
Credit Facility potential borrowing capacity	$ 500,000,000.0
Debt instrument basis points	0.50%
Credit Facility amount outstanding	$ 0
2012 Credit Facility \| Minimum
Debt Disclosure [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.125%
2012 Credit Facility \| Maximum
Debt Disclosure [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.225%
2012 Credit Facility \| Standby Letters of Credit
Debt Disclosure [Line Items]
Credit Facility current borrowing capacity	$ 25,000,000.0
2012 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) \| 2012 Credit Facility
Debt Disclosure [Line Items]
Debt instrument basis points	1.00%
London Interbank Offered Rate (LIBOR) \| 2012 Credit Facility \| Minimum
Debt Disclosure [Line Items]
Debt instrument basis points	1.00%
London Interbank Offered Rate (LIBOR) \| 2012 Credit Facility \| Maximum
Debt Disclosure [Line Items]
Debt instrument basis points	1.625%

Debt Disclosure [Line Items]

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Debt Instrument, Covenant Consolidated Net Worth, Percentage, Maximum

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Debt Instrument, Covenant, Interest Coverage Ratio, Maximum

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Debt Instrument, Covenant, Leverage Ratio, Maximum

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Debt Instrument, Interest Rate, Payment Date

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Debt Instrument, Maturity Years

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Debt Instrument, Monthly Payment

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Debt Instrument, Payment Date

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Description of the frequency of periodic payments (monthly, quarterly, annual).

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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