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Commitments and Contingencies (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 Officer | Dec. 31, 2012 | Dec. 31, 2011
Loss Contingencies [Line Items] |  |  |
Total rent expense | $ 10,324,000 | $ 10,695,000 | $ 9,385,000
Future minimum rental payments under operating leases [Abstract] |  |  |
2013 | 7,531,000 |  |
2014 | 6,717,000 |  |
2015 | 5,686,000 |  |
2016 | 3,592,000 |  |
2017 | 2,259,000 |  |
Thereafter | 2,221,000 |  |
Total | 28,006,000 |  |
Warranty expense | 78,100,000 | 76,500,000 | 63,500,000
Changes in product warranties [Roll forward] |  |  |
Balance, beginning of period | 17,288,000 | 13,500,000 |
Liabilities accrued for current year sales | 78,058,000 | 76,548,000 |
Settlement of warranty claims | (77,305,000) | (72,760,000) |
Balance, end of period | 18,041,000 | 17,288,000 | 13,500,000
Number of key officers | 2 |  |
Financial Standby Letter of Credit [Member] |  |  |
Changes in product warranties [Roll forward] |  |  |
Outstanding letters of credit with certain vendors | 4,600,000 |  |
Real Estate [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Total rent expense | 7,841,000 | 7,829,000 | 7,195,000
Other [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Total rent expense | 2,483,000 | 2,866,000 | 2,190,000
Asbestos [Member] |  |  |
Changes in product warranties [Roll forward] |  |  |
Pending claims, approximate number | 2,280 |  |
Reimbursement from insurance carrier for settled claims | 14,900,000 |  |
Range of possible loss, minimum | 27,400,000 |  |
Range of possible loss, maximum | 48,100,000 |  |
Increase for low end of range | 2,700,000 |  |
Decrease for high end of range | 4,100,000 |  |
Asbestos [Member] | Minimum [Member] |  |  |
Changes in product warranties [Roll forward] |  |  |
Estimated legal costs | 24,400,000 |  |
Asbestos [Member] | Maximum [Member] |  |  |
Changes in product warranties [Roll forward] |  |  |
Estimated legal costs | $ 37,400,000 |  |

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