Note 2 - Correction of Immaterial Errors (Tables)

12 Months Ended

Dec. 31, 2016

Adjustments to Statement of Shareholders' Equity Elements [Member]

Notes Tables

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	Year Ended January 2, 2016							Year Ended December 27, 2014
(in thousands)	Previously Reported		Adjustment			As Revised		Previously Reported		Adjustment			As Revised
Net income	$	82,466	$	(1,600	)	$	80,866	$	99,418	$	(1,318	)	$	98,100
Comprehensive income		57,921		(1,600	)		56,321		57,875		(1,318	)		56,557
Retained earnings		562,717		(4,946	)		557,771		523,302		(3,346	)		519,956
Total shareholders’ equity		744,198		(4,946	)		739,252		727,665		(3,346	)		724,319

	December 28, 2013
(in thousands)	Previously Reported		Adjustment			As Revised
Retained earnings	$	445,059	$	(2,028	)	$	443,031
Total shareholders’ equity		686,916		(2,028	)		684,888

Adjustments to Statement of Cash Flow Elements [Member]

Notes Tables

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	Year Ended January 2, 2016								Year Ended December 27, 2014
(in thousands)	Previously Reported			Adjustment			As Revised		Previously Reported			Adjustment			As Revised
Net income	$	82,466		$	(1,600	)	$	80,866	$	99,418		$	(1,318	)	$	98,100
Accrued taxes		(1,043	)		1,600			557		(549	)		1,318			769
Net cash provided by operating activities		165,826			—			165,826		153,141			—			153,141

Adjustments to Statement of Income Elements [Member]

Notes Tables

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	Year Ended January 2, 2016							Year Ended December 27, 2014
(in thousands except per share amounts )	Previously Reported		Adjustment			As Revised		Previously Reported		Adjustment			As Revised
Income taxes	$	24,482	$	1,600		$	26,082	$	32,228	$	1,318		$	33,546
Net income		82,466		(1,600	)		80,866		99,418		(1,318	)		98,100
Income per share:
Basic	$	3.65	$	(0.07	)	$	3.58	$	4.41	$	(0.06	)	$	4.35
Diluted	$	3.63	$	(0.07	)	$	3.56	$	4.37	$	(0.05	)	$	4.32

Adjustments to Balance Sheet Elements [Member]

Notes Tables

Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]

	January 2, 2016
(in thousands)	Previously Reported		Adjustment			As Revised
Other long-term liabilities	$	12,809	$	4,946		$	17,755
Total shareholders’ equity		744,198		(4,946	)		739,252