Note 8 - Employee Benefit Plans - Net Periodic Pension Costs and Related Components (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 27, 2015	Jun. 28, 2014	Jun. 27, 2015	Jun. 28, 2014
Pension Plan [Member]
Interest cost	$ 32	$ 34	$ 98	$ 102
Expected return on plan assets	(46)	(41)	(136)	(123)
Recognized net actuarial loss	$ 14	11	40	33
Net periodic pension cost		4	2	12
Supplemental Employee Retirement Plan [Member]
Interest cost	$ 81	79	243	237
Recognized net actuarial loss	29	13	87	39
Net periodic pension cost	182	147	546	441
Service cost	$ 72	$ 55	$ 216	$ 165