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Assets Held for Sale and Discontinued Operations - Discontinued Operations Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Assets Held for Sale and Discontinued Operations [Abstract] |  |
Trade receivables, less allowance for doubtful accounts | $ 6,638 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet | $ 7,452 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsNotesAndLoansReceivableNet
Inventories | 11,829 us-gaap_InventoriesPropertyHeldForSaleCurrent | 11,359 us-gaap_InventoriesPropertyHeldForSaleCurrent
Net property | 342 us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment | 317 us-gaap_DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment
Other assets | 2,022 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets | 1,326 us-gaap_DisposalGroupIncludingDiscontinuedOperationOtherAssets
Total assets | 20,831 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation | 20,454 us-gaap_AssetsOfDisposalGroupIncludingDiscontinuedOperation
Accounts payable | 5,263 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable | 5,447 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccountsPayable
Accrued and other liabilities | 991 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities | 930 us-gaap_DisposalGroupIncludingDiscontinuedOperationAccruedLiabilities
Total liabilities | 6,254 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation | 6,377 us-gaap_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation
Net assets | $ 14,577 msa_DisposalGroupIncludingDiscontinuedOperationAssetsandLiabilitiesofDisposalGroupNet | $ 14,077 msa_DisposalGroupIncludingDiscontinuedOperationAssetsandLiabilitiesofDisposalGroupNet

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- Definition Disposal Group, Including Discontinued Operation, Assets and Liabilities of Disposal Group, Net + References No definition available. + Details
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- Definition Amount classified as assets attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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- Definition Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount classified as accounts payable attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount classified as accrued liabilities attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount classified as other assets attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 + Details
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- Definition Amount classified as inventory attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1436-107760 + Details
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