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Commitments And Contingencies (Other Contingencies) (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2017 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Sep. 30, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2014 | Apr. 22, 2016 USD ($) | Feb. 09, 2016 USD ($) | Jul. 02, 2015 USD ($) | Dec. 31, 2012 acre | Jul. 31, 2006
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Airplane operating lease period, years |  |  |  |  |  | five |  |  |  |  |
Guarantees, Fair Value Disclosure | $ 7,800 |  |  |  |  |  |  |  |  |  |
Fair Value Of Residual Value Guarantee | 2,500 |  |  |  |  |  |  |  |  |  |
Fair Value Of Residual Value Guarantee, Fair Value of Operating Lease Asset Threshold |  |  |  | $ 9,500 |  |  |  |  |  |  |
Asbestos Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Gross Settlement And Defense Incurred Costs | 28,000 |  | $ 21,300 |  | $ 73,500 |  |  |  |  |  |
Environmental Claims For A Site In Goodyear Arizona |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated liability | 47,500 |  |  |  |  |  |  |  |  |  |
Amount of additional remediation activities |  |  |  | $ 49,000 |  |  |  |  |  |  |
Accrued environmental loss contingencies current | 16,000 |  |  |  |  |  |  |  |  |  |
Loss contingency reimbursement rate |  |  |  |  |  |  |  |  |  |  | 21.00%
Other receivables | $ 10,600 |  |  |  |  |  |  |  |  |  |
Environmental Claims For Crab Orchard National Wildlife Refuge Superfund Site |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Approximate size of referenced site, acres | acre |  |  |  |  |  |  |  |  |  | 55,000 |
Huttig [Domain] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount |  | $ 5,000 |  |  |  |  |  |  |  |  |
James Poage [Member] | Asbestos Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
compensatory_damages |  |  |  |  |  |  |  |  | $ 1,500 |  |
Additional damages |  |  |  |  |  |  |  |  | 10,000 |  |
Court Judgment |  |  |  |  |  |  |  |  | $ 10,800 |  |
Valent Rabovsky [Member] | Asbestos Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Court Judgment |  |  |  |  |  |  | $ 400 |  |  |  |
Share Of Responsibility Of Verdict |  |  |  |  |  |  |  | 30.00% |  |  |
Jury Verdict Total |  |  |  |  |  |  |  | $ 1,085 |  |  |
George Coulbourn [Member] | Asbestos Commitments and Contingencies |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Court Judgment |  |  |  |  |  |  | $ 6,800 |  |  |  |
Share Of Responsibility Of Verdict |  |  |  |  |  |  | 20.00% |  |  |  |
Jury Verdict Total |  |  |  |  |  |  | $ 9,000 |  |  |  |
Court Reduced damages |  |  |  |  |  |  | $ 5,000 |  |  |  |

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