Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retained Earnings
Cash dividend per share (in dollars per share)	$ 0.68	$ 0.62	$ 0.60
Treasury Stock
Purchase of common stock, shares	1,127,557	459,251

Number of shares that have been repurchased during the period and are being held in treasury.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration