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Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Statement of Stockholders' Equity [Abstract] |  |  |  |
Stock dividends (in shares) | 588,025 | 570,884 | 588,025 | 570,884
Cash Dividends Paid, per Share (in dollars per share) | $ 0.252 | $ 0.245 | $ 0.757 | $ 0.735
Stock Options Exercised (in shares) | 8,884 | 14,063 | 26,039 | 76,775
Shares Issued Under the Directors' Stock Plan (in shares) |  |  | 4,245 | 3,997
Shares Issued Under Employee Stock Purchase Plan (in shares) | 4,739 | 3,455 | 13,697 | 11,403
Shares Issued for Dividend Reinvestment Plans (in shares) | 16,443 | 12,380 | 48,473 | 39,078
Purchase of Treasury Stock (in shares) | 2,236 | 10,151 | 52,257 | 70,711
Stock dividend, percent | 300.00% | 300.00% | 300.00% | 300.00%
Stock Dividend | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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