Debt (Interest Expense) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
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| Debt Instrument [Line Items] | |||
| Total interest expense | $ 14,534 | $ 8,994 | $ 8,244 |
| Convertible Notes, Credit and Amended and Restated Credit Agreements | |||
| Debt Instrument [Line Items] | |||
| Coupon interest | 6,650 | 3,019 | 3,019 |
| Amortization of issuance costs | 2,771 | 3,279 | 2,875 |
| Accretion of debt discount | 11,134 | 5,472 | 5,237 |
| Interest on credit agreement | 3,994 | 4,153 | 5,128 |
| Undrawn and other fees | 654 | 424 | 341 |
| Total interest expense | $ 25,203 | $ 16,347 | $ 16,600 |
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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of amortization expense attributable to debt issuance costs. 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 Amount of commitment fees for the unused borrowing capacity under the long-term financing arrangement that is available to the entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Represents the portion of interest incurred in the period on debt arrangements that was charged against earnings, excluding amortization of debt discount (premium) and financing costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Aggregate amount of interest paid or due on all long-term debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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