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Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation [Line Items]
Income taxes at U.S federal statutory rate	$ 24,151	$ 13,336	$ 20,619
State income taxes, net of federal tax effect	496	1,116	940
Non-deductible business expenses	601	1,009	373
Non-deductible employee compensation	409	469	587
Tax effects of Company owned life insurance	(1,117)	(448)	283
Tax effects of undistributed earnings from foreign subsidiaries not deemed to be indefinitely reinvested	562	321	774
Foreign and U.S. tax effects attributable to foreign operations	(3,958)	(1,174)	(2,115)
Valuation allowance effect – State NOL	3,232	(187)	(333)
Non-deductible reserve against capital asset	(218)	1,188	0
Advance pricing agreements with tax authorities	(2,492)	0	0
Federal tax credits	(595)	(891)	0
Other	(322)	465	(488)
Continuing Operations [Member]
Note 13 - Taxes on Income (Details) - Effective Income Tax Rate Reconciliation [Line Items]
Income tax expense	$ 20,749	$ 15,204	$ 20,640

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