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Organization And Summary Of Significant Accounting Policies (Concentration Of Credit Risk) (Details)
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12 Months Ended | |
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Dec. 31, 2011
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Dec. 31, 2010
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Customer A [Member]
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| Organization And Summary Of Significant Accounting Policies [Line Items] | ||
| Percent customers contributing 10% or more to net accounts receivable | 20.00% | 23.00% |
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Customer B [Member]
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| Organization And Summary Of Significant Accounting Policies [Line Items] | ||
| Percent customers contributing 10% or more to net accounts receivable | 10.00% | 16.00% |
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Customer C [Member]
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| Organization And Summary Of Significant Accounting Policies [Line Items] | ||
| Percent customers contributing 10% or more to net accounts receivable | 10.00% | 3.00% |
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Customer D [Member]
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| Organization And Summary Of Significant Accounting Policies [Line Items] | ||
| Percent customers contributing 10% or more to net accounts receivable | 6.00% | 12.00% |