GOODWILL AND OTHER INTANGIBLE ASSETS (Details 4) (USD $)	3 Months Ended					12 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 Customer relationships Y	Mar. 31, 2012 Technology Y	Mar. 31, 2012 Building Products	Dec. 31, 2011 Building Products	Mar. 31, 2012 Building Products Customer relationships	Dec. 31, 2011 Building Products Customer relationships	Mar. 31, 2012 Building Products Technology	Dec. 31, 2011 Building Products Technology
Changes made to finite-lived intangible assets by reportable segment
Gross carrying amounts					$ 54,289,000	$ 54,289,000	$ 36,922,000	$ 36,922,000	$ 17,367,000	$ 17,367,000
Accumulated amortization					(15,792,000)	(14,955,000)	(7,319,000)	(6,860,000)	(8,473,000)	(8,095,000)
Foreign currency translation adjustment and other					(1,684,000)	(1,684,000)	(1,684,000)	(1,684,000)
Net carrying amounts					36,813,000	37,650,000	27,919,000	28,378,000	8,894,000	9,272,000
Weighted average estimated useful life (in years)			16	7
Amortization expense for the finite-lived intangible assets	800,000	500,000
Total finite-lived intangible asset estimated annual amortization expense for the next five fiscal years
Year one	3,300,000
Year two	3,300,000
Year three	3,300,000
Year four	3,300,000
Year five	$ 3,300,000