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Organization and Summary of Significant Accounting Policies (Correction of Immaterial Errors) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Correction of Immaterial Errors [Member] | Dec. 31, 2009 Correction of Immaterial Errors [Member] | Dec. 31, 2012 Review of Realizability of Deferred Tax Assets [Member] | Dec. 31, 2010 Review of Realizability of Deferred Tax Assets [Member] | Dec. 31, 2009 Review of Realizability of Deferred Tax Assets [Member] | Dec. 31, 2011 Review of Realizability of Deferred Tax Assets [Member] | Dec. 31, 2012 Review of Realizability of Remaining Deferred Tax Assets [Member]
Reserves | $ 3,735 | $ 11,035 |  |  | $ 10,350 |  |  |  |  |
Increase (Decrease) in Deferred Tax Assets |  |  |  | (10,350) |  |  |  |  |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | (18,021) | 0 |  | (10,350) |  | (6,493) |  |  |  | (1,178)
Deferred Tax Assets, Gross | 15,437 | 27,200 |  |  |  |  | 3,104 | 3,104 | 3,104 |
Deferred Income Tax Benefit, Understated Amount |  |  |  |  |  |  | 3,121 | 3,372 |  |
Deferred Tax Assets, Net, Understated Amount |  |  |  |  |  |  | 6,493 |  | 6,493 |
Deferred income tax expense (benefit) | $ 732 | $ 884 | $ (2,544) |  |  | $ (6,493) |  |  |  | $ (1,178)

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