Note 7 - Employee Benefit Plans (Detail) - Net Periodic Benefit Costs and Related Components for the SERPs (Supplemental Employee Retirement Plans, Defined Benefit [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 29, 2012	Dec. 31, 2011
Supplemental Employee Retirement Plans, Defined Benefit [Member]
Service cost	$ 60	$ 50
Interest cost	72	71
Amortization of prior service cost	57	57
Recognized net actuarial loss	34	15
Net periodic benefit cost	$ 223	$ 193