Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Treasury stock, shares acquired (in shares)	1,124,368	636,590
Other stock issuances (in shares)	11,929	11,504
Stock option
Shares transferred from treasury stock (in shares)	449,007	307,270