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Concentration of Credit Risks - Additional Information (Detail)
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12 Months Ended | ||
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Dec. 31, 2012
Customer
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Dec. 31, 2011
Customer
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Dec. 31, 2010
Customer
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| Concentration Risk [Line Items] | |||
| Number of major customer | 3 | 3 | 3 |
| Sales percentage by customer percentage maximum | 5.00% | 5.00% | 5.00% |
| Purchase major vendor percentage | 6.70% | ||
| Trade payable major vendor percentage | 4.70% | ||
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Accounts receivable [Member]
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| Concentration Risk [Line Items] | |||
| Major customer, accounted percentage | 49.70% | 52.00% | 52.50% |
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Sales [Member]
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| Concentration Risk [Line Items] | |||
| Major customer, accounted percentage | 40.10% | 41.00% | 43.70% |
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- Definition
Entity Wide Purchase Major Vendor Percentage No definition available.
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- Definition
Entity Wide Trade Payable Major Vendor Percentage No definition available.
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- Definition
Number Of Customers Accounted For Approximate Net Sales No definition available.
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- Definition
Sales Percentage By Customer Percentage Maximum No definition available.
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- Details
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- Definition
For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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