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Pension and Postretirement Benefits (Details Textual) (USD $) | 12 Months Ended |  |  | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Funded Plans [Member] | Dec. 31, 2011 Funded Plans [Member] | Dec. 31, 2012 Unfunded Pension Plans [Member] | Dec. 31, 2011 Unfunded Pension Plans [Member] | Dec. 31, 2012 Foreign [Member] | Dec. 31, 2011 Foreign [Member] | Dec. 31, 2012 Postretirement Benefit Plans [Member] | Dec. 31, 2019 Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated actuarial loss for postretirement benefit plans |  |  |  | $ (1,419,000) | $ (1,157,000) | $ (799,000) | $ (609,000) |  |  | $ 566,000 |
Estimated prior service credit for postretirement benefit plans |  |  |  |  |  |  |  |  |  | 901,000,000,000 |
Liabilities of funded plans |  |  |  |  |  |  |  | 2,400,000 | 2,100,000 |  |
Liabilities of unfunded plans | 3,000,000 | 2,900,000 |  |  |  |  |  |  |  |  |
Net actuarial losses for the foreign funded plans (after tax) |  |  |  |  |  |  |  | 3,900,000 | 3,400,000 |  |
Net actuarial losses for the foreign funded plans (before tax) |  |  |  |  |  |  |  | 5,300,000 | 4,600,000 |  |
Net actuarial losses for the foreign unfunded plans (after tax) |  |  |  |  |  |  |  | 271,000 | 199,000 |  |
Net actuarial losses for the foreign unfunded plans (before tax) |  |  |  |  |  |  |  | 366,000 | 269,000 |  |
Amount expected to contribute in funded pension plans |  |  |  | 1,700,000 |  |  |  |  |  |  |
Amount expected to contribute in unfunded pension plans |  |  |  |  |  | 1,100,000 |  |  |  |  |
Amount expected to contribute in postretirement benefit plans |  |  |  |  |  |  |  |  |  | 400,000 |
Assumed health care cost trend rate | 8.50% |  |  |  |  |  |  |  |  |  | 5.00%
Pension and Postretirement Benefits (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net periodic pension cost | 597,000 |  |  |  |  |  |  |  |  |  |
Decrease in assumed health care cost trend rate | 0.50% |  |  |  |  |  |  |  |  |  |
Effect of one percentage point increase on accumulated post retirement benefit obligation | 1,800,000 |  |  |  |  |  |  |  |  |  |
Effect of one percentage point increase in assumed health care cost trend rate on total service and interest cost components | 120,000 |  |  |  |  |  |  |  |  |  |
Effect of one percentage point decrease in assumed health care cost trend rate on accumulated post retirement benefit obligation | 1,500,000 |  |  |  |  |  |  |  |  |  |
Effect of one percentage point decrease in assumed health care cost trend rate on total service and interest cost components | 97,000 |  |  |  |  |  |  |  |  |  |
Maximum percentage of funding status of plans in yellow zone | 80.00% |  |  |  |  |  |  |  |  |  |
Maximum percentage of funding status of plans in green zone | 80.00% |  |  |  |  |  |  |  |  |  |
Maximum percentage of funding status of plans in red zone | 65.00% |  |  |  |  |  |  |  |  |  |
Percentage of excess employer contributions to 2010 plans | 5.00% |  |  |  |  |  |  |  |  |  |
Cost of other employee benefit plans | $ 1,700,000 | $ 1,300,000 | $ 1,600,000 |  |  |  |  |  |  |  |

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- Definition Amount of gain (loss) from a decision to temporarily deviate from the substantive plan, or from a change in benefit obligation or plan asset value from changes in actuarial assumptions, for example, but not limited to, interest, mortality, employee turnover or salary scale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6514294 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Glossary Gain or Loss -URI http://asc.fasb.org/extlink&oid=6749293 + Details
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- Definition Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph m -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. + Details
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- Definition The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (m) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph m -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. + Details
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- Definition The employer's best estimate, as soon as it can be reasonably determined, of contributions expected to be paid to the plan in the current remaining fiscal period. Estimated contributions may be presented in the aggregate combining (1) contributions required by funding regulations or laws, (2) discretionary contributions, and (3) noncash contributions. + References No definition available. + Details
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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- Definition The ultimate trend rate for health care costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph l -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. + Details
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