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Cash Equivalents, Restricted Cash and Restricted Cash Equivalents","description":"Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. 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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. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest 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Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions.","units":{"USD":[{"end":"2012-10-31","val":955000,"accn":"0000794170-13-000036","fy":2012,"fp":"FY","form":"10-K/A","filed":"2013-07-16","frame":"CY2012Q3I"},{"end":"2012-10-31","val":955000,"accn":"0000794170-12-000030","fy":2012,"fp":"FY","form":"10-K","filed":"2012-12-28"}]}},"DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter":{"label":"Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years","description":"Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal 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Amount excludes temporary equity. Alternate caption for the concept is permanent 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