Note 14 - Accumulated Other Comprehensive (Loss) Income - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands		3 Months Ended
		Nov. 26, 2016	Nov. 28, 2015
Beginning Balance		$ (28,949)	$ (24,413)
Other comprehensive (loss) income before reclassification		(4,805)	(2,056)
Amounts reclassified from accumulated other comprehensive (loss) income		(76)	(29)
Other comprehensive (loss) income		(4,881)	(2,085)
Ending Balance		(33,830)	(26,498)
Derivative [Member]
Beginning Balance	[1]	116	729
Other comprehensive (loss) income before reclassification	[1]	324	(223)
Amounts reclassified from accumulated other comprehensive (loss) income	[1]	(76)	(72)
Other comprehensive (loss) income	[1]	248	(295)
Ending Balance	[1]	364	434
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning Balance		(20,814)	(20,423)
Other comprehensive (loss) income before reclassification		(5,129)	(1,572)
Amounts reclassified from accumulated other comprehensive (loss) income
Other comprehensive (loss) income		(5,129)	(1,572)
Ending Balance		(25,943)	(21,995)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Beginning Balance	[1]	(8,251)	(4,719)
Other comprehensive (loss) income before reclassification	[1]	0	(261)
Amounts reclassified from accumulated other comprehensive (loss) income	[1]		43
Other comprehensive (loss) income	[1]	0	(218)
Ending Balance	[1]	$ (8,251)	$ (4,937)

[1] Amounts are shown net of tax