CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
CONDENSED CONSOLIDATED STATEMENTS OF EQUITY
Issuance of shares of common stock upon exercise of stock options		2,000		2,000
Purchase of shares of common stock	80,754	8,542	161,500	28,393
Dividends declared on common stock (dollars per per share)	$ 0.17	$ 0.17	$ 0.51	$ 0.51