Note 12 - Changes to the Components of Other Comprehensive Loss (Unaudited) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 26, 2016	Mar. 28, 2015	Mar. 26, 2016	Mar. 28, 2015
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]
Beginning balance	$ (10,661)	$ (6,587)	$ (10,021)	$ (4,632)
Other comprehensive income (loss) before reclassifications	$ (40)	$ (914)	$ (680)	$ (2,869)
Amounts reclassified from accumulated other comprehensive income
Ending balance	$ (10,701)	$ (7,501)	$ (10,701)	$ (7,501)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Beginning balance	(1,698)	(3,278)	(876)	(1,356)
Other comprehensive income (loss) before reclassifications	(454)	$ 533	(1,346)	(1,605)
Amounts reclassified from accumulated other comprehensive income	174		244	216
Ending balance	(1,978)	$ (2,745)	(1,978)	(2,745)
Beginning balance	(12,359)	(9,865)	(10,897)	(5,988)
Other comprehensive income (loss) before reclassifications	(494)	$ (381)	(2,026)	(4,474)
Amounts reclassified from accumulated other comprehensive income	174		244	216
Ending balance	$ (12,679)	$ (10,246)	$ (12,679)	$ (10,246)