BUSINESS COMBINATIONS (Details) (USD $)	9 Months Ended			12 Months Ended
	Sep. 27, 2014 High Level Components, LLC [Member]	Sep. 27, 2014 Upshur Forest Products, LLC [Member]	Sep. 27, 2014 Container Systems, Inc. [Member]	Dec. 28, 2013 SE Panel and Lumber Supply, LLC [Member]	Dec. 28, 2013 Premier Laminating Services, Inc. [Member]	Dec. 28, 2013 Millry Mill Company, Inc. [Member]	Dec. 28, 2013 Custom Caseworks, Inc. [Member]
Business Acquisition [Line Items]
Company Name	High Level Components, LLC (“High Level”	Upshur Forest Products, LLC (“Upshur”)	Container Systems, Inc. (“CSI”)	SE Panel and Lumber Supply, LLC (“SE Panel”)	Premier Laminating Services, Inc. (“Premier Laminating”)	Millry Mill Company, Inc. (“Millry”)	Custom Caseworks, Inc. (“Custom Caseworks”)
Acquisition Date	Mar. 31, 2014	Mar. 28, 2014	Mar. 14, 2014	Nov. 08, 2013	May 31, 2013	Feb. 28, 2013	Dec. 31, 2012
Purchase Price	$ 2,944,000	$ 1,774,000	$ 2,417,000	$ 2,181,000	$ 696,000	$ 2,323,000	$ 6,278,000
Intangible Assets	0	788,000	0	0	250,000	50,000	2,000,000
Net Tangible Assets	3,232,000	985,000	2,417,000	2,181,000	446,000	2,273,000	4,278,000
Operating Segment	Eastern Division	Western Division	Eastern Division	Eastern Division	Western Division	Eastern Division	Western Division
Business Description	A building component manufacturer based in Locust, NC. High Level had annual sales of $6.8 million.	A sawmill located in Gilmer, TX. Upshur had annual sales of $8.9 million.	A manufacturer of crates and containers for industrial applications and the moving-and-storage industry, located in Franklinton, NC. CSI had annual sales of $3.0 million.	A distributor of Olympic Panel overlay concrete forming panels and commodity lumber products to the concrete forming and construction industries. Facility is located in South Daytona, FL. SE Panel had annual sales of $5.4 million.	A business specialized in laminated wood products. Facility is located in Perris, CA. Premier Laminating had annual sales of $6.2 million.	A specialized export mill that produces rough dimension boards and lumber. Facility is located in Millry, AL. Millry had annual sales of $4.7 million.	A high-precision business-to-business manufacturer of custom casework, cabinetry and other products used in many commercial markets. Facility is located in Sauk Rapids, MN. Custom Caseworks had annual sales of $7 million.
Acquired entity, prior year sales	$ 6,800,000	$ 8,900,000	$ 3,000,000	$ 5,400,000	$ 6,200,000	$ 4,700,000	$ 7,000,000
Percentage of asset purchase (in hundredths)		50.00%
Percentage of voting majority (in hundredths)		51.00%