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Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2010-12-31","val":4221000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03"},{"end":"2010-12-31","val":4221000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":4221000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":5020000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03","frame":"CY2011Q2I"},{"end":"2011-09-30","val":5214000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":3681000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2011-12-31","val":3451000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":3451000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10"},{"end":"2011-12-31","val":3451000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":3451000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2011Q4I"},{"end":"2012-03-31","val":3609000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":3398000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10","frame":"CY2012Q2I"},{"end":"2012-09-30","val":3239000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":2221000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29"},{"end":"2012-12-31","val":2221000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10"},{"end":"2012-12-31","val":2221000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":2221000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19"},{"end":"2012-12-31","val":2221000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":2352000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1I"},{"end":"2013-06-30","val":2450000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":3280000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19","frame":"CY2013Q3I"},{"end":"2013-12-31","val":2336000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":2336000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-12-31","val":2357000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13"},{"end":"2013-12-31","val":2357000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":2127000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":2012000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13","frame":"CY2014Q2I"},{"end":"2014-09-30","val":2117000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2014Q3I"}]}},"AccruedProfessionalFeesCurrent":{"label":"Accrued Professional Fees, Current","description":"Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).","units":{"USD":[{"end":"2011-12-31","val":552000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2011Q4I"},{"end":"2012-12-31","val":401000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2012-12-31","val":401000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29"},{"end":"2013-12-31","val":397000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013Q4I"}]}},"AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment":{"label":"Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment","description":"Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.","units":{"USD":[{"end":"2011-12-31","val":18590000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2011Q4I"},{"end":"2012-12-31","val":19174000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2012-12-31","val":19174000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29"},{"end":"2013-12-31","val":19603000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2013Q4I"}]}},"AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax":{"label":"AOCI, Debt Securities, Available-for-sale, Adjustment, after Tax","description":"Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).","units":{"USD":[{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19"},{"end":"2012-12-31","val":222000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":461000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1I"},{"end":"2013-06-30","val":329000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":327000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19","frame":"CY2013Q3I"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":765000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2014Q3I"}]}},"AccumulatedOtherComprehensiveIncomeLossNetOfTax":{"label":"Accumulated Other Comprehensive Income (Loss), Net of Tax","description":"Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.","units":{"USD":[{"end":"2010-12-31","val":446000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03"},{"end":"2010-12-31","val":446000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":446000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":514000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03","frame":"CY2011Q2I"},{"end":"2011-09-30","val":142000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":201000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2011-12-31","val":201000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":201000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10"},{"end":"2011-12-31","val":201000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":201000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2011Q4I"},{"end":"2012-03-31","val":533000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":310000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10","frame":"CY2012Q2I"},{"end":"2012-09-30","val":417000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":222000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19"},{"end":"2012-12-31","val":222000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":461000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1I"},{"end":"2013-06-30","val":329000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":327000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19","frame":"CY2013Q3I"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13"},{"end":"2013-12-31","val":393000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":765000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":0,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13","frame":"CY2014Q2I"},{"end":"2014-09-30","val":0,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2014Q3I"}]}},"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. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.","units":{"USD":[{"end":"2010-12-31","val":21979000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03"},{"end":"2010-12-31","val":21979000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10"},{"end":"2010-12-31","val":21979000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15","frame":"CY2010Q4I"},{"end":"2011-06-30","val":22209000,"accn":"0000731657-11-000013","fy":2011,"fp":"Q2","form":"10-Q","filed":"2011-08-03","frame":"CY2011Q2I"},{"end":"2011-09-30","val":22294000,"accn":"0000731657-11-000020","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-10","frame":"CY2011Q3I"},{"end":"2011-12-31","val":22510000,"accn":"0000731657-12-000012","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-15"},{"end":"2011-12-31","val":22510000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10"},{"end":"2011-12-31","val":22510000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10"},{"end":"2011-12-31","val":22510000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09"},{"end":"2011-12-31","val":22510000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29","frame":"CY2011Q4I"},{"end":"2012-03-31","val":22558000,"accn":"0000731657-12-000019","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1I"},{"end":"2012-06-30","val":22624000,"accn":"0000731657-12-000034","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-10","frame":"CY2012Q2I"},{"end":"2012-09-30","val":22672000,"accn":"0000731657-12-000038","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-09","frame":"CY2012Q3I"},{"end":"2012-12-31","val":23084000,"accn":"0000731657-13-000002","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-29"},{"end":"2012-12-31","val":23084000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10"},{"end":"2012-12-31","val":23084000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13"},{"end":"2012-12-31","val":23084000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19"},{"end":"2012-12-31","val":23084000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31","frame":"CY2012Q4I"},{"end":"2013-03-31","val":23203000,"accn":"0000731657-13-000009","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1I"},{"end":"2013-06-30","val":23244000,"accn":"0000731657-13-000021","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-13","frame":"CY2013Q2I"},{"end":"2013-09-30","val":23255000,"accn":"0000731657-13-000032","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-19","frame":"CY2013Q3I"},{"end":"2013-12-31","val":23267000,"accn":"0000731657-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-03-31"},{"end":"2013-12-31","val":23267000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15"},{"end":"2013-12-31","val":23267000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13"},{"end":"2013-12-31","val":23267000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2013Q4I"},{"end":"2014-03-31","val":23275000,"accn":"0000731657-14-000007","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-15","frame":"CY2014Q1I"},{"end":"2014-06-30","val":23298000,"accn":"0000731657-14-000018","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-13","frame":"CY2014Q2I"},{"end":"2014-09-30","val":23306000,"accn":"0000731657-14-000025","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-13","frame":"CY2014Q3I"}]}},"AdditionsToNoncurrentAssets":{"label":"Segment Reporting Information, Expenditures for Additions to Long-Lived Assets (Deprecated 2013-01-31)","description":"Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; 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Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. 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