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Segment Information (Consolidated Net Sales and Earnings by Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Net sales	$ 482,467	$ 485,513	$ 911,509	$ 893,852
Interest expense, net	(6,128)	(6,948)	(12,131)	(13,336)
Consolidated earnings before income taxes	56,756	50,336	89,700	88,873
Total of Reporting Segments [Member]
Segment earnings (loss)	72,177	65,458	121,797	120,934
Aerospace [Member]
Net sales	261,021	270,493	490,893	481,882
Segment earnings (loss)	40,289	41,223	62,838	72,791
Energy [Member]
Net sales	221,446	215,020	420,616	411,970
Segment earnings (loss)	31,888	24,235	58,959	48,143
Unallocated Corporate [Member]
Segment earnings (loss)	$ (9,293)	$ (8,174)	$ (19,966)	$ (18,725)

X

- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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X

- Definition

Amount of interest revenue (income derived from investments in debt securities and on cash and cash equivalents) net of interest expense (cost of borrowed funds accounted for as interest).

+ References

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, noncontrolling interest and interest expense or income, net.

+ References

No definition available.

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