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A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.","units":{"USD":[{"end":"2010-12-31","val":2841000,"accn":"0001193125-12-078497","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-24","frame":"CY2010Q4I"},{"end":"2011-12-31","val":6602000,"accn":"0001193125-12-078497","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-24"},{"end":"2011-12-31","val":6602000,"accn":"0000859598-13-000024","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":4057000,"accn":"0000859598-13-000024","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","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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Amount excludes temporary equity. 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