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Income Taxes (Summary Of Tax Credit Carryforwards) (Details) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2011
|
|---|---|
| Other Tax Carryforward [Line Items] | |
| Total net operating loss amount | $ 217,822 |
| Tax windfall | (725) |
| After limitations | 217,097 |
|
Operating loss carryforward expiration year 2012
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 1,559 |
|
Operating loss carryforward expiration year 2020
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 29,533 |
|
Operating loss carryforward expiration year 2021
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 50,430 |
|
Operating loss carryforward expiration year 2022
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 115,000 |
|
Operating loss carryforward expiration year 2023
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 5,712 |
|
Operating loss carryforward expiration year 2024
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 3,566 |
|
Operating loss carryforward expiration year 2025
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 1,707 |
|
Operating loss carryforward expiration year 2026
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 476 |
|
Operating loss carryforward expiration year 2028
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 1,360 |
|
Operating loss carryforward expiration year 2029
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | 4,074 |
|
Operating loss carryforward expiration year 2030
|
|
| Other Tax Carryforward [Line Items] | |
| Net operating loss amount | $ 4,405 |