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Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. 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Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.","units":{"USD":[{"start":"2008-01-01","end":"2008-12-31","val":-3512000,"accn":"0000950123-11-018548","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-25","frame":"CY2008"},{"start":"2009-01-01","end":"2009-06-30","val":-285000,"accn":"0000950123-10-072420","fy":2010,"fp":"Q2","form":"10-Q","filed":"2010-08-04"},{"start":"2009-01-01","end":"2009-09-30","val":-304000,"accn":"0000950123-10-099972","fy":2010,"fp":"Q3","form":"10-Q","filed":"2010-11-03"},{"start":"2009-01-01","end":"2009-12-31","val":-277000,"accn":"0001193125-12-088733","fy":2011,"fp":"FY","form":"10-K","filed":"2012-02-29","frame":"CY2009"},{"start":"2009-01-01","end":"2009-12-31","val":-277000,"accn":"0000950123-11-018548","fy":2010,"fp":"FY","form":"10-K","filed":"2011-02-25"}]}},"CashSurrenderValueOfLifeInsurance":{"label":"Cash Surrender Value of Life 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16-12-31","val":15600000,"accn":"0000706688-17-000030","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24"},{"end":"2016-12-31","val":15600000,"accn":"0000706688-18-000032","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01","frame":"CY2016Q4I"},{"end":"2017-12-31","val":17100000,"accn":"0000706688-18-000032","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01"},{"end":"2017-12-31","val":17100000,"accn":"0000706688-19-000026","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-14","frame":"CY2017Q4I"},{"end":"2018-12-31","val":13500000,"accn":"0000706688-19-000026","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-14"},{"end":"2018-12-31","val":13500000,"accn":"0000706688-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-20","frame":"CY2018Q4I"},{"end":"2019-12-31","val":14400000,"accn":"0000706688-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-20","frame":"CY2019Q4I"}]}},"CertificatesOfDepositAtCarryingValue":{"label":"Certificates 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A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.","units":{"USD":[{"end":"2012-06-30","val":25000000,"accn":"0001193125-12-343086","fy":2012,"fp":"Q2","form":"10-Q","filed":"2012-08-08","frame":"CY2012Q2I"}]}},"CommitmentsAndContingencies":{"label":"Commitments and Contingencies","description":"Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to 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An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.","units":{"Segment":[{"start":"2012-01-01","end":"2012-12-31","val":5,"accn":"0001193125-13-071592","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2012"},{"start":"2013-01-01","end":"2013-03-31","val":5,"accn":"0001193125-13-199013","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-05-03","frame":"CY2013Q1"},{"start":"2014-01-01","end":"2014-12-31","val":5,"accn":"0000706688-15-000089","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2014"}],"segment":[{"start":"2019-01-01","end":"2019-06-30","val":3,"accn":"0000706688-19-000145","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-07-25"},{"start":"2019-01-01","end":"2019-09-30","val":3,"accn":"0000706688-19-000166","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-04"},{"start":"2020-01-01","end":"2020-03-31","val":3,"accn":"0000706688-20-000068","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":3,"accn":"0000706688-20-000102","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-29"}],"segments":[{"start":"2013-04-01","end":"2013-06-30","val":5,"accn":"0000706688-13-000010","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-08-02","frame":"CY2013Q2"},{"start":"2013-01-01","end":"2013-09-30","val":5,"accn":"0000706688-13-000022","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-11-01"},{"start":"2013-01-01","end":"2013-12-31","val":5,"accn":"0000706688-14-000015","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-24","frame":"CY2013"},{"start":"2014-01-01","end":"2014-03-31","val":4,"accn":"0000706688-14-000027","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1"},{"start":"2014-01-01","end":"2014-06-30","val":5,"accn":"0000706688-14-000052","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08"},{"start":"2014-01-01","end":"2014-09-30","val":5,"accn":"0000706688-14-000066","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"start":"2015-01-01","end":"2015-03-31","val":5,"accn":"0000706688-15-000146","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-07","frame":"CY2015Q1"},{"start":"2015-01-01","end":"2015-06-30","val":5,"accn":"0000706688-15-000160","fy":2015,"fp":"Q2","form":"10-Q","filed":"2015-08-06"},{"start":"2015-01-01","end":"2015-09-30","val":5,"accn":"0000706688-15-000184","fy":2015,"fp":"Q3","form":"10-Q","filed":"2015-11-09"},{"start":"2015-01-01","end":"2015-12-31","val":6,"accn":"0000706688-16-000237","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-29","frame":"CY2015"},{"start":"2016-01-01","end":"2016-03-31","val":6,"accn":"0000706688-16-000296","fy":2016,"fp":"Q1","form":"10-Q","filed":"2016-05-06","frame":"CY2016Q1"},{"start":"2016-01-01","end":"2016-06-30","val":5,"accn":"0000706688-16-000318","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-04"},{"start":"2016-01-01","end":"2016-09-30","val":5,"accn":"0000706688-16-000334","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-02"},{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000030","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24"},{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000078","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-03","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":3,"accn":"0000706688-17-000078","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-03","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":3,"accn":"0000706688-17-000104","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"start":"2017-01-01","end":"2017-09-30","val":3,"accn":"0000706688-17-000130","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-10-27"},{"start":"2017-01-01","end":"2017-12-31","val":3,"accn":"0000706688-18-000032","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01","frame":"CY2017"},{"start":"2018-01-01","end":"2018-03-31","val":3,"accn":"0000706688-18-000081","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-04-26","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":3,"accn":"0000706688-18-000117","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-07-26"},{"start":"2018-01-01","end":"2018-09-30","val":3,"accn":"0000706688-18-000137","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-10-25"},{"start":"2018-01-01","end":"2018-12-31","val":3,"accn":"0000706688-19-000026","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-14","frame":"CY2018"},{"start":"2019-01-01","end":"2019-03-31","val":3,"accn":"0000706688-19-000095","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-04-25","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-12-31","val":3,"accn":"0000706688-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-20","frame":"CY2019"}]}},"NumberOfReportableSegments":{"label":"Number of Reportable Segments","description":"Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.","units":{"Segment":[{"start":"2012-01-01","end":"2012-12-31","val":4,"accn":"0001193125-13-071592","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2012"}],"segment":[{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000030","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24","frame":"CY2016"},{"start":"2017-01-01","end":"2017-12-31","val":3,"accn":"0000706688-18-000032","fy":2017,"fp":"FY","form":"10-K","filed":"2018-03-01","frame":"CY2017"},{"start":"2018-01-01","end":"2018-12-31","val":3,"accn":"0000706688-19-000026","fy":2018,"fp":"FY","form":"10-K","filed":"2019-02-14","frame":"CY2018"},{"start":"2019-01-01","end":"2019-06-30","val":3,"accn":"0000706688-19-000145","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-07-25"},{"start":"2019-01-01","end":"2019-09-30","val":3,"accn":"0000706688-19-000166","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-04"},{"start":"2019-01-01","end":"2019-12-31","val":3,"accn":"0000706688-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-20","frame":"CY2019"},{"start":"2020-01-01","end":"2020-03-31","val":3,"accn":"0000706688-20-000068","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07","frame":"CY2020Q1"},{"start":"2020-04-01","end":"2020-06-30","val":3,"accn":"0000706688-20-000102","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-29","frame":"CY2020Q2"}],"segments":[{"start":"2016-01-01","end":"2016-06-30","val":5,"accn":"0000706688-16-000318","fy":2016,"fp":"Q2","form":"10-Q","filed":"2016-08-04"},{"start":"2016-01-01","end":"2016-09-30","val":5,"accn":"0000706688-16-000334","fy":2016,"fp":"Q3","form":"10-Q","filed":"2016-11-02"},{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000078","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-03"},{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000104","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000130","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-10-27","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":3,"accn":"0000706688-17-000078","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-05-03","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":3,"accn":"0000706688-17-000104","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-08-04"},{"start":"2017-01-01","end":"2017-09-30","val":3,"accn":"0000706688-17-000130","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-10-27"},{"start":"2018-01-01","end":"2018-03-31","val":3,"accn":"0000706688-18-000081","fy":2018,"fp":"Q1","form":"10-Q","filed":"2018-04-26","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":3,"accn":"0000706688-18-000117","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-07-26"},{"start":"2018-01-01","end":"2018-09-30","val":3,"accn":"0000706688-18-000137","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-10-25"},{"start":"2019-01-01","end":"2019-03-31","val":3,"accn":"0000706688-19-000095","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-04-25","frame":"CY2019Q1"}]}},"NumberOfReportingUnits":{"label":"Number of Reporting Units","description":"Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.","units":{"reporting_unit":[{"start":"2016-01-01","end":"2016-12-31","val":5,"accn":"0000706688-17-000030","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-24","frame":"CY2016"}]}},"NumberOfStores":{"label":"Number of Stores","description":"Represents the number of stores.","units":{"Store":[{"end":"2010-12-31","val":1150,"accn":"0001193125-13-071592","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2010Q4I"},{"end":"2011-12-31","val":1232,"accn":"0001193125-13-071592","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2011Q4I"},{"end":"2012-12-31","val":1324,"accn":"0001193125-13-071592","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-22","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1370,"accn":"0000706688-14-000052","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08","frame":"CY2013Q4I"},{"end":"2014-06-30","val":1349,"accn":"0000706688-14-000052","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-08-08","frame":"CY2014Q2I"},{"end":"2014-12-31","val":1326,"accn":"0000706688-15-000146","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-07","frame":"CY2014Q4I"},{"end":"2015-03-31","val":1318,"accn":"0000706688-15-000146","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-05-07","frame":"CY2015Q1I"}],"store":[{"end":"2011-12-31","val":1232,"accn":"0000706688-14-000015","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-24","frame":"CY2011Q4I"},{"end":"2012-12-31","val":1324,"accn":"0000706688-14-000015","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-24"},{"end":"2012-12-31","val":1324,"accn":"0000706688-15-000089","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2012Q4I"},{"end":"2013-12-31","val":1370,"accn":"0000706688-14-000015","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-24"},{"end":"2013-12-31","val":1370,"accn":"0000706688-14-000027","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09"},{"end":"2013-12-31","val":1370,"accn":"0000706688-14-000066","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05"},{"end":"2013-12-31","val":1370,"accn":"0000706688-15-000089","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2013Q4I"},{"end":"2014-03-31","val":1345,"accn":"0000706688-14-000027","fy":2014,"fp":"Q1","form":"10-Q","filed":"2014-05-09","frame":"CY2014Q1I"},{"end":"2014-09-30","val":1316,"accn":"0000706688-14-000066","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-11-05","frame":"CY2014Q3I"},{"end":"2014-12-31","val":1326,"accn":"0000706688-15-000089","fy":2014,"fp":"FY","form":"10-K","filed":"2015-03-02","frame":"CY2014Q4I"}]}},"OperatingExpenses":{"label":"Operating Expenses","description":"Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. 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