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Note 2 - Recent Accounting Pronouncements (Details Textual) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 02, 2017	Jan. 01, 2017
Scenario, Forecast [Member] | Reclassification of Tax Withholdings from Cash from Operating Activities to Cash from Financing Activities [Member] | April 3, 2016 [Member]
Prior Period Reclassification Adjustment	$ 5.0
Reclassification from Current Deferred Tax Assets to Noncurrent Deferred Tax Assets [Member] | Pro Forma [Member]
Current Period Reclassification Adjustment		$ 10.0
Reclassification from Current Deferred Tax Assets and Noncurrent Deferred Tax Liabilities to Noncurrent Deferred Tax Assets [Member] | Pro Forma [Member]
Current Period Reclassification Adjustment		6.0
Rreclassification from Noncurrent Deferred Tax Liabilities to Noncurrent Deferred Tax Assets [Member] | Pro Forma [Member]
Current Period Reclassification Adjustment		4.0
Reclassification from Tax Benefits and Tax Deficiencies in Additional Paid-in Capital to Deferred Tax Assets [Member] | Pro Forma [Member]
Current Period Reclassification Adjustment		$ 5.8

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