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Equity Plans (Tables) | 9 Months Ended
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Sep. 30, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan | A summary of compensation costs charged to income and proceeds from the exercise of any restricted stock and similar instruments that are recorded to additional paid-in capital and common stock, by award type, are presented below for the three and nine months ended September 30, 2020, and 2019.
| Three months ended September 30, |  | Nine months ended September 30,
| 2020 |  | 2019 |  | 2020 |  | 2019
Adjustments to additional paid-in capital and common stock for: |  |  |  |  |  |  |
Compensation costs charged to income: |  |  |  |  |  |  |
ESPP | $ | 152 |  |  | 140 |  |  | $ | 323 |  |  | 283 |
Restricted stock and deferred restricted stock | 906 |  |  | 812 |  |  | 1,995 |  |  | 2,273 |
Total compensation costs charged to income | $ | 1,058 |  |  | 952 |  |  | $ | 2,318 |  |  | 2,556 |
ESPP proceeds | $ | 860 |  |  | 792 |  |  | $ | 1,830 |  |  | 1,603 |

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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + 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=120381028&loc=d3e5070-113901 + Details
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