Note 13 - Supplemental Condensed Consolidating Guarantor Financial Statements (Details) - Condensed Consolidating Statement of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Condensed Income Statements, Captions [Line Items]
Net sales	$ 260,624	$ 243,483	$ 479,616	$ 453,852
Cost of sales	170,239	157,250	314,545	296,367
Gross profit on sales	90,385	86,233	165,071	157,485
Selling, general and administrative expenses	66,042	64,430	128,701	121,688
Operating income (loss)	24,343	21,803	36,370	35,797
Interest/other expense	128	2	154	(405)
Income tax expense (benefit)	5,980	4,933	8,510	5,365
Net income (loss)	13,071	10,965	17,096	17,962
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	(41,894)		(74,814)
Cost of sales	(41,894)		(74,814)
Gross profit on sales	0		0
Selling, general and administrative expenses	0		0
Operating income (loss)	0		0
Interest/other expense	0		0
Income (loss) before taxes on income and equity in income of subsidiaries	0		0
Income tax expense (benefit)	0		0
Equity in income (loss) of subsidiaries	(13,848)		(20,892)
Net income (loss)	(13,848)		(20,892)
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	170,896		306,845
Cost of sales	123,170		221,420
Gross profit on sales	47,726		85,425
Selling, general and administrative expenses	29,845		56,143
Operating income (loss)	17,881		29,282
Interest/other expense	7,505		13,328
Income (loss) before taxes on income and equity in income of subsidiaries	10,376		15,954
Income tax expense (benefit)	3,257		5,410
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	7,119		10,544
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	131,622		247,585
Cost of sales	88,963		167,939
Gross profit on sales	42,659		79,646
Selling, general and administrative expenses	30,215		58,482
Operating income (loss)	12,444		21,164
Interest/other expense	2,637		5,463
Income (loss) before taxes on income and equity in income of subsidiaries	9,807		15,701
Income tax expense (benefit)	3,078		5,353
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	6,729		10,348
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	0		0
Cost of sales	0		0
Gross profit on sales	0		0
Selling, general and administrative expenses	5,982		14,076
Operating income (loss)	(5,982)		(14,076)
Interest/other expense	(4,850)		(8,027)
Income (loss) before taxes on income and equity in income of subsidiaries	(1,132)		(6,049)
Income tax expense (benefit)	(355)		(2,253)
Equity in income (loss) of subsidiaries	13,848		20,892
Net income (loss)	13,071		17,096
Consolidated Entities [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	260,624		479,616
Cost of sales	170,239		314,545
Gross profit on sales	90,385		165,071
Selling, general and administrative expenses	66,042		128,701
Operating income (loss)	24,343		36,370
Interest/other expense	5,292		10,764
Income (loss) before taxes on income and equity in income of subsidiaries	19,051		25,606
Income tax expense (benefit)	5,980		8,510
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	$ 13,071		$ 17,096