| Acquisitions/Purchase Price Accounting - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified | 1 Months Ended | 
|---|---|
| Sep. 13, 2012
 Tranche | |
| Business Acquisition [Line Items] | |
| Business acquisition, cash | $ 3,750 | 
| Business acquisition, stock issued | 750 | 
| Business acquisition, stock issued (in shares) | 937,500 | 
| Number of tranches | 2 | 
| Tranche 1 | |
| Business Acquisition [Line Items] | |
| Business acquisition, cash | 250 | 
| Business acquisition, stock issued | 250 | 
| Tranche 2 | |
| Business Acquisition [Line Items] | |
| Business acquisition, cash | 250 | 
| Business acquisition, stock issued | 250 | 
| Two tranches | |
| Business Acquisition [Line Items] | |
| Business acquisition, cash | 500 | 
| Business acquisition, stock issued | $ 500 | 
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- Definition Number of Tranches No definition available. 
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- Definition Amount of cash paid to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Details 
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