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Segment Information - Additional Information (Detail)
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12 Months Ended | ||
|---|---|---|---|
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Dec. 31, 2012
Segment
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Dec. 31, 2011
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Dec. 31, 2010
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| Segment Reporting Information [Line Items] | |||
| Reportable segments | 2 | ||
| Percent sale to major customer of total revenue | 14.80% | 14.80% | 13.00% |
| X | ||||||||||
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- Definition
Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. No definition available.
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| X | ||||||||||
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- Definition
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. No definition available.
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| X | ||||||||||
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- Details
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