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Commitments and Contingencies (Narrative) (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 21, 2011 claim | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Commitments And Contingencies [Line Items] |  |  |  |
Rent expense under operating leases |  | $ 125,103 | $ 116,663 | $ 120,677
Polyurethane foam antitrust litigation |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Number of claims filed | claim | 2 |  |  |
Polyurethane foam antitrust litigation | Selling, general and administrative expenses |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Charge for the settlement and defense of antitrust cases |  | 122,480 |  |
Standby letters of credit related to various insurance contracts and foreign vendor commitments | Senior secured credit facility |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Standby letters of credit for various insurance contracts and commitments to foreign vendors |  | $ 941 | $ 1,381 |
Standby letters of credit related to various insurance contracts and foreign vendor commitments | Senior secured credit facility | Maximum |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |
Expiration period for standby letters of credit |  | 2 years |  |

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