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
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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

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- 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 + Details
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- 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 + Details
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- 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 + Details
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