v2.4.0.8

Fair Value Measurement (Details) (USD $)	Sep. 30, 2013 NESA	Nov. 02, 2012 NESA	Sep. 30, 2013 Jacobs Trading, LLC	Sep. 30, 2012 Jacobs Trading, LLC	Oct. 02, 2011 Jacobs Trading, LLC	Sep. 30, 2013 Recurring basis Level 1	Sep. 30, 2012 Recurring basis Level 1	Sep. 30, 2013 Recurring basis Level 2	Sep. 30, 2012 Recurring basis Level 2	Sep. 30, 2013 Recurring basis Level 3 NESA	Sep. 30, 2012 Recurring basis Level 3 Jacobs Trading, LLC
Fair value measurement
Assets, fair value						$ 0	$ 0	$ 0	$ 0
Liabilities, fair value						0	0	0	0
Estimated fair value of earn-out	$ 18,300,000	$ 18,000,000	$ 0	$ 14,500,000	$ 8,300,000					$ 18,390,000	$ 14,511,000

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 35

-Paragraph 1

-Subparagraph b

-URI http://asc.fasb.org/extlink&oid=6911338&loc=d3e6819-128478



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 25

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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X

- Definition

Fair value of financial and nonfinancial obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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