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These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the 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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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Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.","units":{"USD":[{"end":"2011-12-31","val":168966000,"accn":"0000106618-13-000003","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28","frame":"CY2011Q4I"},{"end":"2012-12-31","val":170132000,"accn":"0000106618-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28","frame":"CY2012Q4I"},{"end":"2012-12-31","val":191173000,"accn":"0000106618-13-000003","fy":2012,"fp":"FY","form":"10-K","filed":"2013-02-28"},{"end":"2013-12-31","val":143643000,"accn":"0000106618-15-000002","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-27","frame":"CY2013Q4I"},{"end":"2013-12-31","val":185945000,"accn":"0000106618-14-000002","fy":2013,"fp":"FY","form":"10-K","filed":"2014-02-28"},{"end":"2014-12-31","val":147856000,"accn":"0000106618-16-000029","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26","frame":"CY2014Q4I"},{"end":"2014-12-31","val":147856000,"accn":"0000106618-15-000002","fy":2014,"fp":"FY","form":"10-K","filed":"2015-02-27"},{"end":"2015-12-31","val":198633000,"accn":"0000106618-17-000002","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28","frame":"CY2015Q4I"},{"end":"2015-12-31","val":198633000,"accn":"0000106618-16-000029","fy":2015,"fp":"FY","form":"10-K","filed":"2016-02-26"},{"end":"2016-12-31","val":232516000,"accn":"0000106618-17-000002","fy":2016,"fp":"FY","form":"10-K","filed":"2017-02-28","frame":"CY2016Q4I"}]}},"PropertyPlantAndEquipmentNet":{"label":"Property, Plant and Equipment, Net","description":"Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and 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Third-Party Environmental Recoveries Receivable","description":"Carrying amount as of the balance sheet date of known and reasonably estimable amounts of recoveries from third-parties pertaining to an entity's environmental remediation obligations. An entity's balance sheet may include several assets that relate to an environmental remediation obligation. Among them are the following: a. 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