ACQUISITIONS AND DISPOSITIONS - Sale of Smith Precast Operations (Details) (USD $)	3 Months Ended	9 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 17, 2012 Smith Precast	Sep. 30, 2013 Jensen [Member]
Acquisitions and Dispositions [Line Items]
Proceeds related to disposals of business units				$ 4,300,000
Payments and proceeds related to disposals of business units	$ 1,900,000	$ 2,333,000	$ (22,751,000)		$ 500,000