CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY [Abstract]
Cash dividends, common (in dollars per share)	$ 0.07	$ 0.03	$ 0.12	$ 0.06
Exercise of employee stock options, shares for cashless exercise (in shares)	1,806	16,518	2,906	17,178
Exercise of employee stock options, shares for taxes (in shares)		2,622	5,013	7,608