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Long-Term Debt Partial Redemption of 5% Notes (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Apr. 03, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Debt Instrument [Line Items] |  |  |  |  |
Loss on early extinguishment of debt |  | $ 0 | $ 0 | $ 7,052,000 | $ 0
Senior Notes [Member] | Five Percent Senior Notes due 2020 [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Early Repayment of Senior Debt | $ 220,000,000.0 |  |  |  |
Debt Instrument, Redemption Price, Percentage, Plus Accrued and Unpaid Interest | 101.25% |  |  |  |
Loss on early extinguishment of debt |  |  |  | $ 4,400,000 |

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- Definition The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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