GOODWILL AND OTHER INTANGIBLE ASSETS (Details 3) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Trade names
Changes made to indefinite-lived intangible assets by reporting segment
Balance at the beginning of the period	$ 9,065
Foreign currency translation adjustment	(12)
Balance at the end of the period	9,053
Chlorovinyls | Trade names
Changes made to indefinite-lived intangible assets by reporting segment
Balance at the beginning of the period	364
Foreign currency translation adjustment	(2)
Balance at the end of the period	362
Building Products
Changes made to indefinite-lived intangible assets by reporting segment
Foreign currency translation adjustment	(1,684)	(1,684)
Building Products | Trade names
Changes made to indefinite-lived intangible assets by reporting segment
Balance at the beginning of the period	8,701
Foreign currency translation adjustment	(10)
Balance at the end of the period	$ 8,691