Note 12 - Benefit Plan Related Information (Details) - USD ($)	12 Months Ended
	Jan. 02, 2016	Dec. 27, 2014	Dec. 28, 2013
United States Pension Plan of US Entity [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	$ 105,759,000	$ 84,422,000
Service cost	750,000	600,000	$ 600,000
Interest cost	3,093,000	3,884,000	3,565,000
Net actuarial loss (gain)	(9,127,000)	22,025,000
Benefits paid from the trust	$ (100,475,000)	$ (5,172,000)
Benefits paid directly by company
Curtailments and settlements
Effect of exchange rate movements
Benefit obligation at end of year		$ 105,759,000	84,422,000
Change in plan assets at fair value:
Fair value of plan assets at beginning of year	$ 93,991,000	83,748,000
Actual return on plan assets	(2,375,000)	10,416,000
Employer contributions	8,859,000	5,000,000
Benefits paid from the trust	$ (100,475,000)	$ (5,172,000)
Effect of exchange rate movements
Fair value of plan assets at end of year		$ 93,991,000	83,748,000
Net amount recognized/(unfunded status)		(11,768,000)
Amounts recognized in the Consolidated Balance Sheet consist of:
Current portion of accrued benefit liability		$ (11,768,000)
Accrued benefit liability
Total liability recognized		$ (11,768,000)
Accumulated other comprehensive loss		34,801,000
Foreign Pension Plan [Member]
Change in benefit obligation:
Benefit obligation at beginning of year	$ 52,740,000	50,331,000
Service cost	824,000	925,000	744,000
Interest cost	1,735,000	2,060,000	1,376,000
Net actuarial loss (gain)	648,000	5,652,000
Benefits paid from the trust	(1,732,000)	(2,525,000)
Benefits paid directly by company	(410,000)	$ (155,000)
Curtailments and settlements	(294,000)
Effect of exchange rate movements	(3,229,000)	$ (3,548,000)
Benefit obligation at end of year	50,282,000	52,740,000	50,331,000
Change in plan assets at fair value:
Fair value of plan assets at beginning of year	47,593,000	42,477,000
Actual return on plan assets	389,000	5,141,000
Employer contributions	1,072,000	5,596,000
Benefits paid from the trust	(1,732,000)	(2,525,000)
Effect of exchange rate movements	(2,693,000)	(3,096,000)
Fair value of plan assets at end of year	44,629,000	47,593,000	42,477,000
Net amount recognized/(unfunded status)	$ (5,653,000)	$ (5,147,000)
Amounts recognized in the Consolidated Balance Sheet consist of:
Current portion of accrued benefit liability
Accrued benefit liability	$ (5,653,000)	$ (5,147,000)
Total liability recognized	(5,653,000)	(5,147,000)
Accumulated other comprehensive loss	9,383,000	7,671,000
Benefit obligation at beginning of year	158,499,000	134,753,000
Service cost	1,574,000	1,525,000
Interest cost	4,828,000	5,944,000
Net actuarial loss (gain)	(8,479,000)	27,677,000
Benefits paid from the trust	(102,207,000)	(7,697,000)
Benefits paid directly by company	(410,000)	$ (155,000)
Curtailments and settlements	(294,000)
Effect of exchange rate movements	(3,229,000)	$ (3,548,000)
Benefit obligation at end of year	50,282,000	158,499,000	134,753,000
Fair value of plan assets at beginning of year	141,584,000	126,225,000
Actual return on plan assets	(1,986,000)	15,557,000
Employer contributions	9,931,000	10,596,000
Benefits paid from the trust	(102,207,000)	(7,697,000)
Effect of exchange rate movements	(2,693,000)	(3,096,000)
Fair value of plan assets at end of year	44,629,000	141,584,000	$ 126,225,000
Net amount recognized/(unfunded status)	$ (5,653,000)	(16,915,000)
Current portion of accrued benefit liability		(11,768,000)
Accrued benefit liability	$ (5,653,000)	(5,147,000)
Total liability recognized	(5,653,000)	(16,915,000)
Accumulated other comprehensive loss	$ 9,383,000	$ 42,472,000