CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Stockholders' Equity [Abstract]
Issuance of common stock (in shares)	4,096	1,148	4,753	92,422
Issuance of common stock purchased under the employee stock purchase plan (in shares)	1,821	1,857	3,839	3,569
Forfeiture of shares of common stock (in shares)	3,455	580	3,755	1,023
Cash dividends (in dollars per share)			$ 0.94	$ 0.89
Purchase of common stock (in shares)	8,728	13,719	29,580	82,600