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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2011 | Aug. 29, 2016 | Aug. 15, 2016 | Dec. 31, 2014 | Dec. 31, 2013
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Unrecognized tax benefits, decrease resulting from settlements with taxing authorities |  |  | $ 7,300 |  |  |  |
Increase in income tax benefit |  | $ (1,700) |  |  |  |  |
Unrecognized tax benefits, increase resulting from settlements with taxing authorities |  | 5,600 |  |  |  |  |
Unrecognized tax benefits, decrease to interest on income tax expense |  | 600 |  |  |  |  |
Change in valuation allowance | $ 0 |  |  |  |  |  |
Unrecognized tax benefits | 0 | $ 814 |  |  |  | $ 515 | $ 7,832
Increase (Decrease) To Deferred Tax Liability, Re-measurement Upon Completion Of Tax Examination |  |  |  | $ 600 |  |  |
State |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Operating loss carryforwards | 43,200 |  |  |  |  |  |
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority |  |  |  | $ 600 | $ 200 |  |
IRS And California Franchise Tax Board [Member] |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |
Unrecognized tax benefits | $ 800 |  |  |  |  |  |

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- Definition The increase (decrease) during the reporting period in the amounts payable to taxing authorities for taxes that are based on the reporting entity's earnings, net of amounts receivable from taxing authorities for refunds of overpayments or recoveries of income taxes, and in deferred and other tax liabilities and assets. + References No definition available. + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 + Details
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