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Acquisitions - Summary of Final Amounts Allocated to Acquired Assets and Assumed Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified |
Sep. 30, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|---|
| Business Acquisition [Line Items] | |||
| Goodwill | $ 18,236 | $ 15,891 | $ 14,683 |
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MW Commodity Advisors, LLC
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| Business Acquisition [Line Items] | |||
| Receivables | 7 | ||
| Liabilities | (7) | ||
| Total fair value of net tangible assets acquired | |||
| Goodwill | 147 | ||
| Total purchase consideration | 147 | ||
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Ten-Sixty
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| Business Acquisition [Line Items] | |||
| Goodwill | 2,345 | ||
| Total purchase consideration | 4,092 | ||
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Ten-Sixty | Customer Relationships
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| Business Acquisition [Line Items] | |||
| Intangible asset | 1,650 | ||
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Ten-Sixty | Non-compete Agreements
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| Business Acquisition [Line Items] | |||
| Intangible asset | $ 97 |
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- Details
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- Definition
Amount of assets acquired at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of identifiable intangible assets recognized as of the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of liabilities assumed at the acquisition date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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