Note 18 - Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 28, 2013

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

	2013									2012
	4Qa		3Qb		2Qc		1Qd			4Qe		3Qf			2Q			1Qg
Net sales	$	198,129	$	201,040	$	187,766	$	170,918		$	158,794	$	172,688		$	175,853		$	160,578
Gross profit		77,109		80,960		73,557		64,606			59,407		68,636			69,562			60,862
Operating income		32,823		37,559		31,382		28,117			18,019		30,931			32,096			25,824
Net income (as previously reported)		23,658		26,990		26,648		14,794			9,841		23,998			23,604			17,889
Equity method loss adjustments(g)		—		—		—		—			2,188		(1,220	)		(641	)		(326	)
Tax adjustment(d)		—		—		—		(3,306	)		—		—			—			—
Net income (Q1 2013 as restated)		23,658		26,990		26,648		11,488			12,029		22,778			22,963			17,563
Net income per share (as reported):
Basic	$	1.05	$	1.20	$	1.19	$	0.67		$	0.45	$	1.09		$	1.08		$	0.83
Diluted	$	1.04	$	1.19	$	1.18	$	0.66		$	0.44	$	1.08		$	1.07		$	0.81
Impact of equity method loss adjustments:
Basic	$	—	$	—	$	—	$	—		$	0.10	$	(0.05	)	$	(0.03	)	$	(0.02	)
Diluted	$	—	$	—	$	—	$	—		$	0.09	$	(0.05	)	$	(0.03	)	$	(0.01	)
Impact of tax adjustment:
Basic	$	—	$	—	$	—	$	(0.15	)	$	—	$	—		$	—		$	—
Diluted	$	—	$	—	$	—	$	(0.15	)	$	—	$	—		$	—		$	—
Net income per share (Q1 2013 as restated):
Basic	$	1.05	$	1.20	$	1.19	$	0.52		$	0.55	$	1.04		$	1.05		$	0.81
Diluted	$	1.04	$	1.19	$	1.18	$	0.51		$	0.53	$	1.03		$	1.04		$	0.80