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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of Changes in Nonvested Restricted Stock Awards | A summary of changes in nonvested restricted stock awards follows:
| Shares |  | Weighted-average Grant Date Fair Value
Nonvested at January 1, 2018 | 94,472 |  |  | $ | 20.79 |
Granted | 24,508 |  |  | 26.92 |
Forfeited | (361 | ) |  | 26.19 |
Vested | (42,730 | ) |  | 19.87 |
Nonvested at December 31, 2018 | 75,889 |  |  | $ | 23.20 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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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