Note 4 - Acquisitions (Details) (USD $)	3 Months Ended			9 Months Ended		0 Months Ended		1 Months Ended	0 Months Ended	1 Months Ended	0 Months Ended	1 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 29, 2013	Dec. 31, 2012	Sep. 30, 2012	Sep. 29, 2013	Sep. 30, 2012	Sep. 06, 2013 Frontline [Member]	Sep. 06, 2013 Premier [Member]	Sep. 20, 2013 West Side [Member]	Mar. 02, 2012 Decor Mfg., LLC [Member]	Jul. 23, 2012 Gustafson Lighting [Member]	Sep. 15, 2012 Creative Wood Designs, Inc. [Member]	Oct. 26, 2012 Middlebury Hardwood Products, Inc. [Member]	Sep. 29, 2013 Frontline, Premier and West Side [Member]	Sep. 30, 2012 Frontline, Premier and West Side [Member]	Sep. 29, 2013 Frontline, Premier and West Side [Member]	Sep. 30, 2012 Frontline, Premier and West Side [Member]	Sep. 30, 2012 Decor, Creative Wood and Middlebury Hardwoods [Member]	Sep. 30, 2012 Decor, Creative Wood and Middlebury Hardwoods [Member]
Note 4 - Acquisitions (Details) [Line Items]
Business Combination, Consideration Transferred						$ 5,200,000	$ 2,600,000	$ 8,700,000	$ 4,300,000	$ 2,800,000	$ 3,000,000	$ 19,800,000
Stock Issued During Period, Shares, New Issues (in Shares)									100,000
Stock Issued During Period, Value, New Issues									600,000
Business Acquisition, Share Price (in Dollars per share)									$ 6.42
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net										3,000,000
Business Combination, Bargain Purchase, Gain Recognized, Amount		200,000								223,000
Business Acquisition Pro Forma Amortization Expense													300,000	300,000	900,000	900,000	200,000	600,000
Business Acquisition, Pro Forma Revenue	$ 154,732,000		$ 134,929,000	$ 478,231,000	$ 400,594,000								$ 1,800,000		$ 1,800,000		$ 9,400,000	$ 17,600,000