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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Share-based Compensation [Abstract] |
Share-based Compensation Related to Restricted Stock Awards | The total stock-based compensation expense related to restricted stock awards for the years ended December 31, are as follows (in thousands):
| 2018 |  | 2017 |  | 2016
Employees | $ | 2,332 |  |  | $ | 2,416 |  |  | $ | 1,555 |
Non-employee Directors | 553 |  |  | 642 |  |  | 544 |
Total | $ | 2,885 |  |  | $ | 3,058 |  |  | $ | 2,099 |
Stock-based Compensation Expense | Stock-based compensation consisting of restricted stock awards was included in costs and operating expenses and provision for income taxes on the accompanying statements of income for the years ended December 31, 2018, 2017 and 2016 (in thousands):
| 2018 |  | 2017 |  | 2016
Stock-based compensation included in costs and operating expenses | $ | 3,027 |  |  | $ | 3,068 |  |  | $ | 2,109 |
Income tax benefit recognized for stock-based compensation | (755 | ) |  | (1,180 | ) |  | (811 | )
Stock-based compensation expense, net of income tax benefit | $ | 2,272 |  |  | $ | 1,888 |  |  | $ | 1,298 |

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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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- Definition Tabular disclosure of the changes in other outstanding share-based compensation awards other than stock options or nonvested awards. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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