Condensed Consolidated Statements of Shareholders' Equity (unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Consolidated Statements of Shareholders' Equity (unaudited) [Abstract]
Cash dividends declared (in dollars per share)	$ 0.18	$ 0.15	$ 0.54	$ 0.45
Repurchase of shares of common stock (in shares)	25,000		1,204,688
Issuance of shares of common stock (in shares)	1,900	8,340	70,299	113,548
Share based compensation, common stock (in shares)	5,991	0	92,617	81,919
Share based compensation withholding obligation, common stock (in shares)	919	382	57,205	87,767