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Share-Based Compensation (Tables) | 6 Months Ended
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Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of share-based compensation expenses | Total share-based compensation expenses were comprised as follows (in thousands):
| Three months ended June 30, |  | Six months ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Option plan | $ | 6,758 |  |  | $ | 5,649 |  |  | $ | 9,815 |  |  | $ | 7,071 |
Other share-based awards | 13,847 |  |  | 13,018 |  |  | 19,736 |  |  | 22,110 |
Total share-based compensation before tax | 20,605 |  |  | 18,667 |  |  | 29,551 |  |  | 29,181 |
Tax benefit | 4,904 |  |  | 6,933 |  |  | 7,033 |  |  | 10,838 |
Total share-based compensation expense included in net income | $ | 15,701 |  |  | $ | 11,734 |  |  | $ | 22,518 |  |  | $ | 18,343 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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