Stock-Based Compensation (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax stock-based compensation expense | $ 11,286 | $ 10,986 | $ 11,672 |
| Income tax benefits | (1,778) | (3,969) | (4,044) |
| Total stock-based compensation expense, net of tax | 9,508 | 7,017 | 7,628 |
| Cost of Sales [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax stock-based compensation expense | 243 | 233 | 326 |
| Selling, General and Administrative Expense [Member] | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Pre-tax stock-based compensation expense | $ 11,043 | $ 10,753 | $ 11,346 |
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. No definition available.
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. 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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