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Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Statement of Stockholders' Equity [Abstract] |  |  |  |
Stock dividend, percent | 3.00% | 3.00% | 3.00% | 3.00%
Stock dividend (in shares) | 570,884 | 538,100 | 570,884 | 554,264
Cash Dividends Paid, per Share (in dollars per share) | $ 0.252 | $ 0.245 | $ 0.757 | $ 0.716
Exercised (in shares) | 14,063 | 12,978 | 76,775 | 91,979
Shares Issued Under Directors Stock Plan (in shares) |  |  | 3,997 | 2,705
Shares Issued Under Employee Stock Purchase Plan (in shares) | 3,455 | 3,188 | 11,403 | 10,801
Shares Issued for Dividend Reinvestment Plans (in shares) | 12,380 | 11,642 | 39,078 | 35,947
Purchase of Treasury Stock (in shares) | 10,151 | 10,688 | 70,711 | 50,697

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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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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