CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Purchase of treasury stock	722	20,750	52,104	240,155	143,092	186,417
Issuance of treasury stock	900		11,225			2,822
Cancellations of treasury stock	4,616		17,509		41	19,433
Dividends, per share (in dollars per share)	$ 0.21	$ 0.21	$ 0.21	$ 0.20	$ 0.20	$ 0.20