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Retirement Plans - Multi-employer Benefit Plans (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($) facility | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Multi-Employer Benefit Plans |  |  |
Domestic employees represented by various labor unions with separate collective bargaining agreements (percentage) | 25.50% |  |
Expenses recognized for contributions |  |  | $ 1.2
Total contributions for most recent plan year available (percentage) | 5.00% |  |
Red Zone |  |  |
Multi-Employer Benefit Plans |  |  |
Multi-employer plans funded status (percentage) (less than for Red and Yellow Zone, greater than for Green Zone) | 65.00% | 65.00% |
Yellow Zone |  |  |
Multi-Employer Benefit Plans |  |  |
Multi-employer plans funded status (percentage) (less than for Red and Yellow Zone, greater than for Green Zone) | 80.00% | 80.00% |
Number of years in which a multi-employer plan is projected to be a credit balance | 7 years |  |
Green Zone |  |  |
Multi-Employer Benefit Plans |  |  |
Multi-employer plans funded status (percentage) (less than for Red and Yellow Zone, greater than for Green Zone) | 80.00% | 80.00% |
Number of years in which a multi-employer plan is projected not to be a credit balance | 7 years |  |
Multi-employer Retirement Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Number of domestic manufacturing facilities where employees are covered by union sponsored multiemployer plans | facility | 9 |  |
Expenses recognized for contributions | $ 3.9 | $ 4.3 | 4.9
Multi-employer Health and Welfare Plan | Multi-employer Retirement Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Number of domestic manufacturing facilities where employees are covered by union sponsored multiemployer plans | facility | 3 |  |
Expenses recognized for contributions | $ 3.6 | 3.5 | $ 2.8
United Furniture Workers Pension Fund A | Multi-employer Retirement Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Expenses recognized for contributions | $ 0.7 | $ 1.1 |
Pension Plan of the National Retirement Fund |  |  |
Multi-Employer Benefit Plans |  |  |
Surcharge (percentage) | 10.00% | 10.00% |
Pension Plan of the National Retirement Fund | Multi-employer Retirement Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Expenses recognized for contributions | $ 0.7 | $ 0.8 |
Central States, Southeast & Southwest Areas Pension Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Surcharge (percentage) | 10.00% | 10.00% |
Central States, Southeast & Southwest Areas Pension Plan | Multi-employer Retirement Plan |  |  |
Multi-Employer Benefit Plans |  |  |
Expenses recognized for contributions | $ 0.8 | $ 0.7 |

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- Definition Represents the number of domestic manufacturing facilities, employees working at are covered by union sponsored multiemployer plans. + References No definition available. + Details
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- Definition The percentage of contributions made to multiemployer plans by the employer. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References No definition available. + Details
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- Definition Indicates the percentage whether the multiemployer plan is less than 65 percent funded, between 65 and less than 80 percent funded, or at least 80 percent funded. The acceptable values are: (1) "less than 65 percent", (2) "between 65 and less than 80 percent", (3) "at least 80 percent", and (4) "NA". A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References No definition available. + Details
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- Definition Represents percentage of surcharge to the pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References No definition available. + Details
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- Definition Indicates the number of years a multi-employer plan is projected not to be a credit balance. + References No definition available. + Details
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- Definition Indicates the number of years a multi-employer plan is projected to be a credit balance. + References No definition available. + Details
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- Definition Amount of contributions made to multiemployer plan by employer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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- Definition Percentage of employee participants subject to a collective bargaining arrangement to all participants in a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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