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Stock, Value, Issued","description":"Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' 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This element increases net cash provided by operating activities.","units":{"USD":[{"start":"2009-01-01","end":"2009-12-31","val":-191000,"accn":"0000721994-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-05","frame":"CY2009"},{"start":"2010-01-01","end":"2010-06-30","val":-160000,"accn":"0000721994-11-000039","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17"},{"start":"2010-01-01","end":"2010-09-30","val":-178000,"accn":"0000721994-11-000050","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2010-01-01","end":"2010-12-31","val":-371000,"accn":"0000721994-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-05","frame":"CY2010"},{"start":"2011-01-01","end":"2011-03-31","val":-78000,"accn":"0000721994-12-000026","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2011Q1"},{"start":"2011-01-01","end":"2011-06-30","val":-91000,"accn":"0000721994-11-000039","fy":2011,"fp":"Q2","form":"10-Q/A","filed":"2011-08-17"},{"start":"2011-01-01","end":"2011-09-30","val":-96000,"accn":"0000721994-11-000050","fy":2011,"fp":"Q3","form":"10-Q","filed":"2011-11-09"},{"start":"2011-01-01","end":"2011-12-31","val":-138000,"accn":"0000721994-12-000016","fy":2011,"fp":"FY","form":"10-K","filed":"2012-03-05","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":-267000,"accn":"0000721994-12-000026","fy":2012,"fp":"Q1","form":"10-Q","filed":"2012-05-10","frame":"CY2012Q1"}]}},"TaxBenefitFromStockOptionsExercised1":{"label":"Tax Benefit from Stock Options Exercised (Deprecated 2013-01-31)","description":"Tax benefits realized from the exercise of stock options resulting in reductions in the entity's income taxes, which increases net cash provided by operating activities.","units":{"USD":[{"start":"2009-12-31","end":"2010-12-31","val":-371000,"accn":"0000721994-13-000008","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-04","frame":"CY2010"},{"start":"2011-01-01","end":"2011-06-30","val":-91000,"accn":"0000721994-12-000038","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-06"},{"start":"2011-01-01","end":"2011-09-30","val":-96000,"accn":"0001144204-12-059907","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-07"},{"start":"2010-12-31","end":"2011-12-31","val":-138000,"accn":"0000721994-13-000008","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-04","frame":"CY2011"},{"start":"2012-01-01","end":"2012-03-31","val":-267000,"accn":"0000721994-13-000018","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2012Q1"},{"start":"2012-01-01","end":"2012-06-30","val":-432000,"accn":"0000721994-12-000038","fy":2012,"fp":"Q2","form":"10-Q/A","filed":"2012-09-06"},{"start":"2012-01-01","end":"2012-09-30","val":-535000,"accn":"0001144204-12-059907","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-11-07"},{"start":"2012-01-01","end":"2012-12-31","val":-112000,"accn":"0000721994-13-000008","fy":2012,"fp":"FY","form":"10-K","filed":"2013-03-04","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":-14000,"accn":"0000721994-13-000018","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-10","frame":"CY2013Q1"}]}},"TimeDepositMaturitiesAfterYearFive":{"label":"Time Deposit Maturities, after Year Five","description":"Amount of time deposit maturing after fifth fiscal year following current fiscal year. 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