Note 14 - Supplemental Condensed Consolidating Guarantor Financial Statements (Details) - Condensed Consolidating Statement of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Condensed Income Statements, Captions [Line Items]
Net sales	$ 252,191	$ 254,448	$ 731,807	$ 708,300
Cost of sales	168,596	162,695	483,141	459,062
Gross profit on sales	83,595	91,753	248,666	249,238
Selling, general and administrative expenses	63,958	63,918	192,659	185,606
Restructuring and asset impairment charge	12,386	0	12,386	0
Operating income (loss)	7,251	27,835	43,621	63,632
Interest/other expense	(931)	(114)	(777)	(519)
Income tax expense (benefit)	1,082	6,461	9,592	11,826
Net income (loss)	(376)	14,957	16,720	32,919
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	(37,515)		(112,329)
Cost of sales	(37,515)		(112,329)
Gross profit on sales	0		0
Selling, general and administrative expenses	0		0
Restructuring and asset impairment charge	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	1,595		(19,297)
Net income (loss)	1,595		(19,297)
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	165,513		472,358
Cost of sales	122,076		343,496
Gross profit on sales	43,437		128,862
Selling, general and administrative expenses	27,925		84,068
Restructuring and asset impairment charge	4,592		4,592
Operating income (loss)	10,920		40,202
Interest/other expense	7,120		20,448
Income (loss) before taxes on income and equity in income of subsidiaries	3,800		19,754
Income tax expense (benefit)	5,824		11,234
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	(2,024)		8,520
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	124,193		371,778
Cost of sales	84,035		251,974
Gross profit on sales	40,158		119,804
Selling, general and administrative expenses	29,952		88,434
Restructuring and asset impairment charge	7,794		7,794
Operating income (loss)	2,412		23,576
Interest/other expense	3,217		8,680
Income (loss) before taxes on income and equity in income of subsidiaries	(805)		14,896
Income tax expense (benefit)	(1,234)		4,119
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	429		10,777
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	6,081		20,157
Restructuring and asset impairment charge	0		0
Operating income (loss)	(6,081)		(20,157)
Interest/other expense	(3,792)		(11,819)
Income (loss) before taxes on income and equity in income of subsidiaries	(2,289)		(8,338)
Income tax expense (benefit)	(3,508)		(5,761)
Equity in income (loss) of subsidiaries	(1,595)		19,297
Net income (loss)	(376)		16,720
Consolidated Entities [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	252,191		731,807
Cost of sales	168,596		483,141
Gross profit on sales	83,595		248,666
Selling, general and administrative expenses	63,958		192,659
Restructuring and asset impairment charge	12,386		12,386
Operating income (loss)	7,251		43,621
Interest/other expense	6,545		17,309
Income (loss) before taxes on income and equity in income of subsidiaries	706		26,312
Income tax expense (benefit)	1,082		9,592
Equity in income (loss) of subsidiaries	0		0
Net income (loss)	$ (376)		$ 16,720