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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Capital increase related to Equity Incentive Plan | $ 4,461,000 | $ 4,265,000 | $ 698,000
Common stock, dividends per share (in USD per share) | $ 1.84 | $ 1.78 | $ 1.60
Common Stock [Member] |  |  |
Capital increase related to Equity Incentive Plan | $ 2,000 | $ 0 | $ 2,000

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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