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Purchase Price Allocation Based on Fair Value of Assets Acquired and Liabilities Assumed, Third Pillar Systems Inc. (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Aug. 30, 2013 Third Pillar System Inc
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Business Acquisition [Line Items] |  |  |  |
Cash consideration |  |  |  | $ 2,500
Recognized amounts of identifiable assets acquired and liabilities assumed |  |  |  |
Current assets |  |  |  | 375
Intangible assets |  |  |  | 298
Other non-current assets |  |  |  | 24
Current liabilities |  |  |  | (200)
Total identifiable net assets acquired |  |  |  | 497
Goodwill | 950,424 | 956,064 | 925,339 | 2,003
Total |  |  |  | $ 2,500

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- Definition The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed. It does not include the direct cost of acquisition. + References No definition available. + Details
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- Definition Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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