Note 2 - Correction of Immaterial Errors - Effects of Adjustments to Correct Immaterial Errors, Balance Sheet (Details) - USD ($) $ in Thousands	Oct. 01, 2016	Jan. 02, 2016	Dec. 27, 2014	Dec. 28, 2013
Scenario, Previously Reported [Member]
Other long-term liabilities		$ 12,809
Total equity		744,198	$ 727,665	$ 686,916
Restatement Adjustment [Member]
Other long-term liabilities		4,946
Total equity		(4,946)	(3,346)	(2,028)
Other long-term liabilities	$ 19,037	17,755
Total equity	$ 803,376	$ 739,252	$ 724,319	$ 684,888

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4I
-URI http://asc.fasb.org/extlink&oid=65897068&loc=SL4590271-111686

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568740-111683

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=68079674&loc=SL4568447-111683

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