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STOCK OPTIONS (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Valuation Assumptions | The fair value of options granted was determined using the following weighted-average assumptions as of grant date, for the years ended December 31:
| 2017 |  | 2016
Risk-free interest rate | 2.00 | % |  | 1.57 | %
Expected term (in years) | 6.46 |  |  | 6.50 |
Expected stock price volatility | 18.54 | % |  | 20.92 | %
Dividend yield | 1.61 | % |  | 2.13 | %
Schedule of Stock Option Activity | A summary of activity in the Plan during the years ended December 31 follows:
2017 | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life in Years |  | Aggregate Intrinsic Value
Outstanding at beginning of year | 340,377 |  |  | $ | 23.43 |  |  | 7.34 |  | $ | 194 |
Granted | 159,598 |  |  | 27.80 |  |  | 9.40 |  | 480 |
Exercised | (7,033 | ) |  | 11.94 |  |  | 4.23 |  | 132 |
Forfeited | (21,500 | ) |  | 25.58 |  |  | 8.59 |  | 109 |
Balance, December 31, 2017 | 471,442 |  |  | $ | 24.98 |  |  | 7.30 |  | $ | 2,696 |
Exercisable at end of year | 134,644 |  |  | $ | 23.60 |  |  | 5.85 |  | $ | 950 |
2016 | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life in Years |  | Aggregate Intrinsic Value
Outstanding at beginning of year | 314,391 |  |  | $ | 23.28 |  |  | 8.00 |  | $ | 137 |
Granted | 49,500 |  |  | 23.58 |  |  | 9.38 |  | 21 |
Exercised | (3,014 | ) |  | 11.94 |  |  | 2.51 |  | 36 |
Forfeited | (20,500 | ) |  | 23.22 |  |  | 7.74 |  | 16 |
Balance, December 31, 2016 | 340,377 |  |  | $ | 23.43 |  |  | 7.34 |  | $ | 194 |
Exercisable at end of year | 89,677 |  |  | $ | 22.61 |  |  | 6.45 |  | $ | 125 |
Schedule of Nonvested Stock Option Activity | A summary of nonvested activity in the Plan during the years ended December 31 follows:
2017 | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life in Years |  | Aggregate Intrinsic Value
Outstanding at beginning of year | 250,700 |  |  | $ | 23.73 |  |  | 7.65 |  | $ | 69 |
Granted | 159,598 |  |  | 27.80 |  |  | 9.40 |  | 480 |
Vested | (54,500 | ) |  | 23.72 |  |  | 6.35 |  | 378 |
Forfeited | (19,000 | ) |  | 25.58 |  |  | 8.59 |  | 109 |
Balance, December 31, 2017 | 336,798 |  |  | $ | 25.54 |  |  | 7.88 |  | $ | 1,747 |
2016 | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Life in Years |  | Aggregate Intrinsic Value
Outstanding at beginning of year | 267,200 |  |  | $ | 23.72 |  |  | 8.22 |  | $ | — |
Granted | 49,500 |  |  | 23.58 |  |  | 9.38 |  | 21 |
Vested | (47,700 | ) |  | 23.72 |  |  | 6.95 |  | 14 |
Forfeited | (18,300 | ) |  | 23.22 |  |  | 7.74 |  | 16 |
Balance, December 31, 2016 | 250,700 |  |  | $ | 23.73 |  |  | 7.65 |  | $ | 69 |
Plan Information | Information related to the Plan is as follows for the year ended December 31:
|  | 2017 |  | 2016
Intrinsic value of options exercised |  | $ | 132 |  |  | $ | 36 |
Cash received from options exercised |  | 84 |  |  | 36 |
Tax benefit realized from options exercised |  | — |  |  | — |
Weighted average fair value of options granted |  | 5.41 |  |  | 4.30 |

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- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=96867065&loc=SL79508275-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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