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The amount represented by this item is net of tax, as applicable.","units":{"USD":[{"end":"2011-12-31","val":1237000,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2011Q4I"},{"end":"2011-12-31","val":1237000,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"end":"2011-12-31","val":1237000,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2012-06-30","val":1223000,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":1288000,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13","frame":"CY2012Q3I"},{"end":"2012-12-31","val":0,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2012Q4I"}]}},"AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxHeldtomaturityDebtSecurities":{"label":"Accumulated Other Comprehensive Income (Loss), Other than Temporary Impairment, Not Credit Loss, Net of Tax, Held-to-maturity, Debt Securities","description":"Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as held-to-maturity that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.","units":{"USD":[{"end":"2011-12-31","val":-50000,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2011Q4I"},{"end":"2011-12-31","val":-50000,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"end":"2011-12-31","val":-50000,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2012-06-30","val":0,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":0,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13","frame":"CY2012Q3I"},{"end":"2012-12-31","val":0,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2012Q4I"}]}},"AdditionalPaidInCapital":{"label":"Additional Paid in Capital","description":"Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. 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For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred 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Shares issued include shares outstanding and shares held in the treasury.","units":{"shares":[{"end":"2010-12-31","val":4726329,"accn":"0001144204-11-047886","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-16"},{"end":"2010-12-31","val":4726329,"accn":"0001144204-11-063931","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14"},{"end":"2010-12-31","val":4726329,"accn":"0001144204-12-018770","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30","frame":"CY2010Q4I"},{"end":"2011-06-30","val":4739622,"accn":"0001144204-11-047886","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-16","frame":"CY2011Q2I"},{"end":"2011-09-30","val":4749072,"accn":"0001144204-11-063931","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-14","frame":"CY2011Q3I"},{"end":"2011-12-31","val":4749415,"accn":"0001144204-12-018770","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-30"},{"end":"2011-12-31","val":4749415,"accn":"0001144204-12-028563","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-14"},{"end":"2011-12-31","val":4749415,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"end":"2011-12-31","val":4749415,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"end":"2011-12-31","val":4749415,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2011Q4I"},{"end":"2012-03-31","val":4765222,"accn":"0001144204-12-028563","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-14","frame":"CY2012Q1I"},{"end":"2012-06-30","val":4772649,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2012Q2I"},{"end":"2012-09-30","val":4773100,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13","frame":"CY2012Q3I"},{"end":"2012-12-31","val":4775114,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27"},{"end":"2012-12-31","val":4775114,"accn":"0001144204-13-028589","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14"},{"end":"2012-12-31","val":4775114,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"end":"2012-12-31","val":4775114,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"end":"2012-12-31","val":4775114,"accn":"0001144204-14-019013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":4789962,"accn":"0001144204-13-028589","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-14","frame":"CY2013Q1I"},{"end":"2013-06-30","val":4855890,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2I"},{"end":"2013-09-30","val":4861523,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3I"},{"end":"2013-12-31","val":4870887,"accn":"0001144204-14-019013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":4870887,"accn":"0001144204-14-030934","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-12-31","val":4870887,"accn":"0001144204-14-049669","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14"},{"end":"2013-12-31","val":4870887,"accn":"0001144204-14-068163","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14","frame":"CY2013Q4I"},{"end":"2014-03-31","val":4878960,"accn":"0001144204-14-030934","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":5145356,"accn":"0001144204-14-049669","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-14","frame":"CY2014Q2I"},{"end":"2014-09-30","val":5150356,"accn":"0001144204-14-068163","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14","frame":"CY2014Q3I"}]}},"CommonStockSharesOutstanding":{"label":"Common Stock, Shares, Outstanding","description":"Number of shares of common stock outstanding. 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This item includes treasury stock repurchased by the entity. 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This item does not include penalties assessed on the early withdrawal of time 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This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect 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property.","units":{"USD":[{"start":"2010-01-01","end":"2010-12-31","val":0,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27","frame":"CY2010"},{"start":"2011-01-01","end":"2011-06-30","val":0,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2011-04-01","end":"2011-06-30","val":0,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14","frame":"CY2011Q2"},{"start":"2011-01-01","end":"2011-09-30","val":0,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"start":"2011-07-01","end":"2011-09-30","val":0,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13","frame":"CY2011Q3"},{"start":"2011-01-01","end":"2011-12-31","val":0,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27"},{"start":"2011-01-01","end":"2011-12-31","val":0,"accn":"0001144204-14-019013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2011"},{"start":"2012-01-01","end":"2012-06-30","val":322000,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-01-01","end":"2012-06-30","val":322000,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":322000,"accn":"0001144204-12-045874","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-14"},{"start":"2012-04-01","end":"2012-06-30","val":322000,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2012Q2"},{"start":"2012-01-01","end":"2012-09-30","val":322000,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"start":"2012-01-01","end":"2012-09-30","val":322000,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"start":"2012-07-01","end":"2012-09-30","val":0,"accn":"0001144204-12-061350","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-13"},{"start":"2012-07-01","end":"2012-09-30","val":0,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2012Q3"},{"start":"2012-01-01","end":"2012-12-31","val":344000,"accn":"0001144204-13-017811","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-27"},{"start":"2012-01-01","end":"2012-12-31","val":344000,"accn":"0001144204-14-019013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012"},{"start":"2013-01-01","end":"2013-06-30","val":0,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14"},{"start":"2013-04-01","end":"2013-06-30","val":0,"accn":"0001144204-13-045422","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-14","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":0,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14"},{"start":"2013-01-01","end":"2013-09-30","val":-70000,"accn":"0001144204-14-068163","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14"},{"start":"2013-07-01","end":"2013-09-30","val":0,"accn":"0001144204-13-061575","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-14","frame":"CY2013Q3"},{"start":"2013-01-01","end":"2013-12-31","val":0,"accn":"0001144204-14-019013","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013"},{"start":"2014-01-01","end":"2014-09-30","val":0,"accn":"0001144204-14-068163","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-14"}]}},"GainLossOnSaleOfSecuritiesNet":{"label":"Gain 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While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its 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