Fair Value Measurements (Summary of Financial Instruments at Carrying and Fair Value) (Details) - USD ($) $ in Thousands |
Mar. 31, 2018 |
Dec. 31, 2017 |
May 19, 2017 |
Oct. 03, 2016 |
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| 6.125% senior unsecured notes due 2024 | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Debt instrument, interest rate, stated (as a percent) | 6.125% | 6.125% | 6.125% | |
| Carrying Value | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Credit Facility | $ 75,000 | $ 25,000 | ||
| 6.125% Senior Notes | 595,374 | 595,196 | ||
| Total | 670,374 | 620,196 | ||
| Fair Value | ||||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||||
| Credit Facility | 0 | 0 | ||
| 6.125% Senior Notes | 613,680 | 618,000 | ||
| Total | $ 613,680 | $ 618,000 |
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time. No definition available.
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- Definition Fair value portion of notes payable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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