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Summary Of Significant Accounting Policies (Schedule Of Customers That Accounted For A Large Portion Of Net Revenues And Accounts Receivable) (Detail)
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9 Months Ended | 12 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
Customer A [Member]
Net Revenues [Member]
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Sep. 30, 2011
Customer A [Member]
Net Revenues [Member]
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Sep. 30, 2012
Customer A [Member]
Accounts Receivable [Member]
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Sep. 30, 2011
Customer A [Member]
Accounts Receivable [Member]
|
Dec. 31, 2011
Customer A [Member]
Accounts Receivable [Member]
|
Sep. 30, 2012
Customer B [Member]
Net Revenues [Member]
|
Sep. 30, 2011
Customer B [Member]
Net Revenues [Member]
|
Sep. 30, 2011
Customer B [Member]
Accounts Receivable [Member]
|
Sep. 30, 2012
Customer B [Member]
Accounts Receivable [Member]
|
Dec. 31, 2011
Customer B [Member]
Accounts Receivable [Member]
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Sep. 30, 2012
Customer C [Member]
Net Revenues [Member]
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Sep. 30, 2011
Customer C [Member]
Net Revenues [Member]
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Sep. 30, 2012
Customer C [Member]
Accounts Receivable [Member]
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Sep. 30, 2011
Customer C [Member]
Accounts Receivable [Member]
|
Dec. 31, 2011
Customer C [Member]
Accounts Receivable [Member]
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| Concentration Risk [Line Items] | |||||||||||||||
| Concentration risk | 17.50% | 19.20% | 25.20% | 27.20% | 25.40% | 6.00% | 8.40% | 11.20% | 8.30% | 8.60% | 5.90% | 6.40% | 6.90% | 8.80% | 5.50% |