Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

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+ Details

Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill impairment charge	$ 30,600,000
Goodwill impairment charge, after taxes	30,600,000
Goodwill		177,181,000	165,372,000	103,639,000	104,290,000
Film Products [Member]
Goodwill		162,900,000
Aluminum Extrusions [Member]
Goodwill		$ 14,300,000