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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2019
Share-based Payment Arrangement, Noncash Expense [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):
| 2019 |  | 2018 |  | 2017
Employees | $ | 2,667 |  |  | $ | 2,332 |  |  | $ | 2,416 |
Non-employee Directors | 597 |  |  | 553 |  |  | 642 |
Total | $ | 3,264 |  |  | $ | 2,885 |  |  | $ | 3,058 |
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, 2019, 2018 and 2017 (in thousands):
| 2019 |  | 2018 |  | 2017
Stock-based compensation included in costs and operating expenses | $ | 3,264 |  |  | $ | 3,027 |  |  | $ | 3,068 |
Income tax benefit recognized for stock-based compensation | (663 | ) |  | (755 | ) |  | (1,180 | )
Stock-based compensation expense, net of income tax benefit | $ | 2,601 |  |  | $ | 2,272 |  |  | $ | 1,888 |

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- Definition Tabular disclosure of activity for outstanding award under share-based payment arrangement excluding share and unit options and nonvested award. + 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=116856206&loc=d3e5070-113901 + Details
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