CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY [Abstract]
Cash dividends, common (in dollars per share)	$ 0.05	$ 0.03
Exercise of employee stock options, shares for cashless exercise (in shares)	1,100	660
Exercise of employee stock options, shares for taxes (in shares)	5,013	4,986