ACQUISITIONS (Details) (USD $)	12 Months Ended			0 Months Ended		0 Months Ended			6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 01, 2011 Decor Mfg., LLC [Member] 2012 Acquisitions [Member]	Mar. 02, 2012 Decor Mfg., LLC [Member] 2012 Acquisitions [Member]	Jul. 23, 2012 Gustafson Lighting [Member] 2012 Acquisitions [Member]	Sep. 15, 2012 Creative Wood Designs, Inc. [Member] 2012 Acquisitions [Member]	Oct. 26, 2012 Middlebury Hardwood Products, Inc. [Member] 2012 Acquisitions [Member]	Jun. 16, 2011 Praxis [Member] 2011 Acquisitions [Member]	Sep. 16, 2011 A.I.A. Countertops, LLC [Member] 2011 Acquisitions [Member]	Dec. 19, 2011 Infinity Graphics (formerly Performance Graphics) [Member] 2011 Acquisitions [Member]	Jan. 04, 2010 Quality Hardwoods [Member] 2010 Acquisitions [Member]	Aug. 23, 2010 Blazon International Group [Member] 2010 Acquisitions [Member]
Business Acquisition [Line Items]
Fair value of purchase price of business						$ 3,000,000			$ 700,000
Issuance of common stock, shares (in shares)	777,542	663,306	131,000	100,000
Issuance of common stock, value				600,000
Stock price of shares issued (in dollars per share)					$ 6.42
Gain on acquisition of business, net of tax						223,000			200,000
Trade receivables and inventories, net of accounts payable assumed									100,000		200,000
Estimated fair values of assets acquired and liabilities assumed [Abstract]
Trade receivables					1,280,000	982,000	927,000	1,872,000		1,144,000			1,247,000
Inventories					903,000	1,262,000	1,423,000	1,719,000		222,000		700,000	2,612,000
Property, plant and equipment					400,000	1,221,000	1,429,000	7,171,000	200,000	667,000	600,000
Prepaid expenses					22,000	20,000	24,000	144,000		26,000			22,000
Accounts payable and accrued liabilities					(1,375,000)	(816,000)	(1,570,000)	(1,223,000)		(1,381,000)
Accounts payable													(1,019,000)
Other liabilities							(958,000)
Intangible assets					1,663,000	337,000	757,000	6,470,000	400,000	3,704,000			795,000
Goodwill					1,440,000		994,000	3,609,000		1,163,000			105,000
Gain on acquisition of business						(223,000)			(200,000)
Total purchase price					4,333,000	2,783,000	3,026,000	19,762,000	500,000	5,545,000	1,300,000	2,000,000	3,762,000
Goodwill and intangible assets											500,000	1,300,000
Amortization expense related to intangible assets acquired	1,500,000	1,500,000	600,000
Subsequent contingent payments							2
Pro forma information [Abstract]
Revenue	485,022,000	387,862,000	305,940,000
Net income	29,851,000	11,125,000	1,454,000
Income per share - basic (in dollars per share)	$ 2.83	$ 1.14	$ 0.16
Income per share - diluted (in dollars per share)	$ 2.81	$ 1.10	$ 0.15
Revenues	$ 29,000,000	$ 8,000,000	$ 12,000,000