Condensed Consolidated Statements of Changes In Stockholders' Equity (Unaudited) (Parentheticals) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Equity Option [Member]
Shares transferred from treasury stock (in shares)	492,135	252,172	1,308,469	970,348
Restricted Stock [Member]
Shares transferred from treasury stock (in shares)	1,721	1,636	137,811	163,989
Treasury stock acquired, shares (in shares)	276,290	490,716	1,892,187	1,488,779
Net share settlement (in shares)	288	240	25,187	37,875
Other stock issuances, shares (in shares)	13,637	13,657	35,792	35,562