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Plant Closures (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	$ 0	$ 1,975	$ 0
PVC Pipe Facilities [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment charges		1,975
Business exit costs		$ 1,389

The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value.

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- Definition

The charge against earnings in the period, comprised of costs incurred associated with an exit or disposal activity other than for a discontinued operations as defined under generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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