Condensed Consolidated Statements of Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Condensed Consolidated Statements of Shareholders' Equity (unaudited) [Abstract]
Cash dividends declared (in dollars per share)	$ 0.20	$ 0.18	$ 0.60	$ 0.54
Repurchase of shares of common stock (in shares)	0	25,000	678,929	1,204,688
Issuance of shares of common stock (in shares)	0	1,900	11,917	70,299
Share based compensation, common stock (in shares)	10,583	5,991	104,465	92,617
Share based compensation withholding obligation, common stock (in shares)	5,398	919	33,728	57,205