The aggregate amount of goodwill acquired in the period and allocated to the reportable segment. The value is stated at fair value based on the purchase price allocation.

+ References+ Details

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 (Narrative) (Details) (USD $)	3 Months Ended	6 Months Ended			3 Months Ended			12 Months Ended
Goodwill (Narrative) (Details) (USD $)	Sep. 30, 2012	Mar. 31, 2013	Mar. 31, 2013 Aerospace [Member]	Mar. 31, 2013 Energy [Member]	Sep. 30, 2012 Minimum [Member]	Sep. 30, 2012 Maximum [Member]	Dec. 31, 2012 Business Acquisition, Acquiree - Duarte Business [Member] Aerospace [Member]	Sep. 30, 2012 U.S. Government Related [Member]
Goodwill addition		$ 87,719,000	$ 87,719,000	$ 0			$ 87,719,000
Impairment	$ 0
Weighted average cost of capital assumption					8.88%	9.60%
Assumed annual compound growth rate after five or ten years	4.05%
Percentage of net sales from major customer								18.00%