Note 7 - Notes Payable, Long-Term Debt and Lines of Credit (Details Textual) - USD ($) $ in Thousands		12 Months Ended
		Dec. 03, 2016	Nov. 28, 2015	Nov. 29, 2014	Oct. 31, 2014	Mar. 05, 2012	Dec. 16, 2009
Notes Payable, Current		$ 37,334	$ 30,757
Short-term Debt, Weighted Average Interest Rate		13.70%	8.10%	11.30%
Debt Instrument, Face Amount							$ 150,000
Line of Credit Facility, Maximum Borrowing Capacity		$ 300,000
Long-term Debt		668,323	$ 692,106
Long-term Debt, Fair Value		693,283	716,213
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 300,000
Long-term Debt
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.175%
Line of Credit, Current		$ 0
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member]
Debt Instrument, Basis Spread on Variable Rate		1.075%
Senior Notes Series A [Member]
Debt Instrument, Face Amount		$ 17,000
Debt Instrument, Interest Rate, Stated Percentage		5.13%
Long-term Debt	[1]	$ 17,014	17,419
Senior Notes Series A [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivative, Basis Spread on Variable Rate		1.59%
Senior Notes Series B [Member]
Debt Instrument, Face Amount		$ 33,000
Debt Instrument, Interest Rate, Stated Percentage		5.13%
Long-term Debt	[2]	$ 33,164	33,982
Senior Notes Series B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivative, Basis Spread on Variable Rate		1.47%
Senior Notes Series C [Member]
Debt Instrument, Face Amount		$ 35,000
Debt Instrument, Interest Rate, Stated Percentage		5.61%
Derivative, Basis Spread on Variable Rate		1.78%
Long-term Debt	[3]	$ 36,428	36,955
Senior Notes Series C, Swapped Portion [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Face Amount		25,000
Senior Notes Series D [Member]
Debt Instrument, Face Amount		$ 65,000
Debt Instrument, Interest Rate, Stated Percentage		5.61%
Long-term Debt	[4]	$ 65,000	65,000
Senior Notes Series E [Member]
Debt Instrument, Face Amount		$ 250,000				$ 250,000
Debt Instrument, Interest Rate, Stated Percentage		4.12%
Long-term Debt	[5]	$ 250,000	250,000
Non-U.S. Notes [Member]
Debt Instrument, Face Amount		$ 467
Debt Instrument, Interest Rate, Stated Percentage		3.36%
Long-term Debt	[6]	$ 467
Term Loan [Member]
Debt Instrument, Face Amount					$ 300,000
Long-term Debt		$ 266,250	$ 288,750
Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		1.25%

[1] Senior Notes, Series A, due December 16, 2016, $17,000 5.13 percent fixed, swapped to a variable rate of 6 - month LIBOR (in arrears) plus 1.59 percent.

[2] Senior Notes, Series B, due February 24, 2017, $33,000 5.13 percent fixed, swapped to a variable rate of 6 - month LIBOR (in arrears) plus 1.47 percent.

[3] Senior Notes, Series C, due December 16, 2019, $35,000 5.61 percent fixed, $25,000 swapped to a variable rate of 6 - month LIBOR (in arrears) plus 1.78 percent

[4] Senior Notes, Series D, due February 24, 2020, $65,000 5.61 percent fixed.

[5] Senior Notes, Series E, due March 5, 2022, $250,000 4.12 percent fixed.

[6] Non-U.S. Notes, due in 2024 and 2025, $467 3.36 percent fixed blended rate.