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Operating Segments (Details Textual) (USD $)	3 Months Ended		12 Months Ended			3 Months Ended	12 Months Ended
Operating Segments (Details Textual) (USD $)	Sep. 30, 2011	Dec. 31, 2010	Sep. 30, 2012 Segment	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2012 Corporate [Member]	Sep. 30, 2012 Corporate [Member]	Sep. 30, 2010 Corporate [Member]
Operating segments (Textual) [Abstract]
Modified tender offer cost						$ 500,000	$ 500,000
Asset impairment charges	28,100,000				3,006,000			3,006,000
Operating Segments (Additional Textual) [Abstract]
Number of operating segments			2
Restructuring charges	$ 1,000,000	$ 600,000	$ 0	$ 1,616,000	$ 1,204,000

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

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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