Note 13 - Taxes on Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2016	Dec. 28, 2014	Dec. 29, 2013	Dec. 30, 2012
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Foreign	$ 3,700
Operating Loss Carryforwards, Valuation Allowance	4,457	$ 10,298
Increase (Decrease) in Deferred Tax Assets	$ (14,200)	$ (21,800)
Effective Income Tax Rate Reconciliation, Percent	31.50%	30.60%	30.10%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Undistributed Earnings of Foreign Subsidiaries	$ 259,000
Deferred Tax Liabilities, Undistributed Foreign Earnings	5,600
Foreign Earnings to be Repatriated	3,600
Unrecognized Tax Benefits	28,271	$ 27,301	$ 27,361	$ 25,186
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	28,300
Unrecognized Tax Benefits That Would Require To Settle Through Cash	6,300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	1,500
Income Tax Expense (Benefit)	33,348	$ 10,934	20,749
Discontinued Operations [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, State and Local	126,600
Canadian Subsidiary [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Increase (Decrease) in Income Taxes Payable			(600)
Domestic Tax Authority [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	57,000
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	1,200
Domestic Tax Authority [Member] | Deferred Compensation, Share-based Payments [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 30,800
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Open Tax Year	2003
State and Local Jurisdiction [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Operating Loss Carryforwards, Valuation Allowance	$ 70,500
State and Local Jurisdiction [Member] | Continuing Operations [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 139,300
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Open Tax Year	2010
Foreign Tax Authority [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries	$ 200
Foreign Tax Authority [Member] | Earliest Tax Year [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Open Tax Year	2004
BAPA Program [Member]
Note 13 - Taxes on Income (Details) [Line Items]
Income Tax Expense (Benefit)			$ (1,900)