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Equity Plans (Tables) | 3 Months Ended
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Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [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, proceeds from the exercise of stock options and similar instruments and the tax benefit realized from stock options and similar instruments exercised, that are recorded to additional paid-in capital and common stock, by award type, are presented below for the three months ended March 31, 2019, and 2018.
| Three months ended March 31,
| 2019 |  | 2018
Adjustments to additional paid-in capital and common stock for: |  |  |
Compensation costs charged to income: |  |  |
ESPP | $ | 143 |  |  | 115 |
Restricted stock and deferred restricted stock | 743 |  |  | 372 |
Total compensation costs charged to income | $ | 886 |  |  | 487 |
ESPP proceeds | $ | 811 |  |  | 653 |

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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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