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Organization And Summary Of Significant Accounting Policies (Correction of Immaterial Errors) (Details) (USD $) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended |  | 3 Months Ended |  | 3 Months Ended
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Sep. 30, 2012 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2011 | Sep. 30, 2012 Review of Realizability of Remaining Deferred Tax Assets [Member] | Dec. 31, 2009 Loss on Foreclosure and Impairment Charges [Member] | Sep. 30, 2012 Loss on Foreclosure and Impairment Charges [Member] Correction of Immaterial Errors [Member]
Deferred Tax Assets, Gross |  |  |  |  |  | $ 10.3 |
Decrease in deferred tax assets |  |  |  |  |  |  | 10.3
Decrease in valuation allowance | 7.7 |  |  |  | 7.7 |  | 10.3
Deferred Income Tax Benefit, Understated Amount |  | 3.1 | 4.6 |  |  |  |
Deferred Tax Assets, Net, Understated Amount |  | 7.7 |  | 7.7 |  |  |
Deferred income tax benefit |  |  |  |  | $ 7.7 |  |

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