2.4.0.840502 - Disclosure - Warranty Costs (Schedule Of Activity Reflects In Aggregate Accrued Warranty Costs) (Details)truefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$Duration_3_31_2013_To_6_29_2013http://www.sec.gov/CIK0000025793duration2013-03-31T00:00:002013-06-29T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$Duration_4_1_2012_To_6_30_2012http://www.sec.gov/CIK0000025793duration2012-04-01T00:00:002012-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$Duration_12_30_2012_To_6_29_2013http://www.sec.gov/CIK0000025793duration2012-12-30T00:00:002013-06-29T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$4false USDfalsefalse$Duration_1_1_2012_To_6_30_2012http://www.sec.gov/CIK0000025793duration2012-01-01T00:00:002012-06-30T00:00:00Unit1Standardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 1us-gaap_ProductWarrantiesDisclosuresAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Warranty Costs [Abstract]2false 2us-gaap_ProductWarrantyAccrualus-gaap_truecreditinstantfalsefalsefalsefalsefalsetruefalsefalseperiodStartLabel1truefalsefalse17010001701USD$falsetruefalse2truefalsefalse19310001931USD$falsetruefalse3truefalsefalse17120001712USD$falsetruefalse4truefalsefalse18920001892USD$falsetruefalsexbrli:monetaryItemTypemonetaryCarrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(5)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 false2Accrued Warranty Costs - Beginning of Period3false 2us-gaap_ProductWarrantyAccrualPaymentsus-gaap_truedebitdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse-163000-163falsefalsefalse2truefalsefalse-42000-42falsefalsefalse3truefalsefalse-263000-263falsefalsefalse4truefalsefalse-138000-138falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 false2Warranty costs paid4false 2us-gaap_ProductWarrantyAccrualWarrantiesIssuedus-gaap_truecreditdurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1truefalsefalse190000190falsefalsefalse2truefalsefalse-2000-2falsefalsefalse3truefalsefalse279000279falsefalsefalse4truefalsefalse133000133falsefalsefalsexbrli:monetaryItemTypemonetaryRepresents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 false2Warranty costs accrued5false 2us-gaap_ProductWarrantyAccrualus-gaap_truecreditinstantfalsefalsefalsefalsefalsefalsetruefalseperiodEndLabel1truefalsefalse17280001728USD$falsetruefalse2truefalsefalse18870001887USD$falsetruefalse3truefalsefalse17280001728USD$falsetruefalse4truefalsefalse18870001887USD$falsetruefalsexbrli:monetaryItemTypemonetaryCarrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. 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