Note 13 - Supplemental Condensed Consolidating Guarantor Financial Statements (Details) - Condensed Consolidating Statement of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Condensed Income Statements, Captions [Line Items]
Net sales	$ 218,992	$ 210,369
Cost of sales	144,306	139,117
Gross profit on sales	74,686	71,252
Selling, general and administrative expenses	62,659	57,258
Operating income (loss)	12,027	13,994
Interest/Other expense	26	(407)
Income tax expense (benefit)	2,530	432
Net income (loss)	4,025	6,997
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	(32,920)
Cost of sales	(32,920)
Gross profit on sales	0
Selling, general and administrative expenses	0
Operating income (loss)	0
Interest/Other expense	0
Income (loss) before taxes on income and equity in income of subsidiaries	0
Income tax expense (benefit)	0
Equity in income (loss) of subsidiaries	(7,044)
Net income (loss)	(7,044)
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	135,949
Cost of sales	98,250
Gross profit on sales	37,699
Selling, general and administrative expenses	26,298
Operating income (loss)	11,401
Interest/Other expense	5,823
Income (loss) before taxes on income and equity in income of subsidiaries	5,578
Income tax expense (benefit)	2,153
Equity in income (loss) of subsidiaries	0
Net income (loss)	3,425
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	115,963
Cost of sales	78,976
Gross profit on sales	36,987
Selling, general and administrative expenses	28,267
Operating income (loss)	8,720
Interest/Other expense	2,826
Income (loss) before taxes on income and equity in income of subsidiaries	5,894
Income tax expense (benefit)	2,275
Equity in income (loss) of subsidiaries	0
Net income (loss)	3,619
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	0
Cost of sales	0
Gross profit on sales	0
Selling, general and administrative expenses	8,094
Operating income (loss)	(8,094)
Interest/Other expense	(3,177)
Income (loss) before taxes on income and equity in income of subsidiaries	(4,917)
Income tax expense (benefit)	(1,898)
Equity in income (loss) of subsidiaries	7,044
Net income (loss)	4,025
Consolidated Entities [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	218,992
Cost of sales	144,306
Gross profit on sales	74,686
Selling, general and administrative expenses	62,659
Operating income (loss)	12,027
Interest/Other expense	5,472
Income (loss) before taxes on income and equity in income of subsidiaries	6,555
Income tax expense (benefit)	2,530
Equity in income (loss) of subsidiaries	0
Net income (loss)	$ 4,025