Note 12 - Benefit Plans (Details) - Components of Net Periodic Benefit Cost (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 29, 2012	Dec. 27, 2014	Dec. 28, 2013	Dec. 29, 2012
Components of net periodic benefit cost:
Service cost		$ 1,525	$ 1,344
Interest cost		5,944	4,941
Total cost of the plan for the year		300	800	5,400
Total (income) expense for the year	5,300
United States Pension Plan of US Entity [Member]
Components of net periodic benefit cost:
Service cost		600	600	600
Interest cost		3,884	3,565	4,962
Expected return on plan assets		(5,646)	(5,360)	(6,620)
Amortization of losses (gains)		549	942	338
Total cost of the plan for the year		(613)	(253)	(720)
Expected plan participants’ contributions		0	0	0
Net periodic benefit (credit) cost		(613)	(253)	(720)
Settlement loss				5,098
Total (income) expense for the year		(613)	(253)	4,378
Foreign Pension Plan [Member]
Components of net periodic benefit cost:
Service cost		925	744	601
Interest cost		2,060	1,376	644
Expected return on plan assets		(2,292)	(1,207)	(480)
Amortization of prior service (credit)				(1)
Amortization of losses (gains)		216	130	63
Total cost of the plan for the year		909	1,043	827
Expected plan participants’ contributions		0	0	0
Net periodic benefit (credit) cost		909	1,043	827
Settlement loss				188
Total (income) expense for the year		$ 909	$ 1,043	$ 1,015