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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) | 3 Months Ended | 9 Months Ended |  |  | 1 Months Ended | 9 Months Ended
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2013 | Dec. 31, 2011 | Mar. 31, 2009 | Apr. 01, 2009 Trade name [Member] | Sep. 30, 2013 Trade name [Member] | Sep. 30, 2013 In-process research and development [Member]
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Aggregate purchase price |  |  |  | $ 5,135,000 |  |  |
Minimum expiration year of intangible assets |  |  |  |  |  |  | 2027
Impairment amount of intangible asset |  |  | 655,000 |  |  |  |
Useful life |  | 12 years 2 months 12 days |  |  | 15 years | 15 years |
Amortization expense | $ 66,000 |  |  |  |  |  |

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- Definition Impairments Of Intangible Asset Finite Lived + References No definition available. + Details
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- Definition Minimum Expiration Year Of Intangible Assets + References No definition available. + Details
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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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