Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash dividends paid on common shares, per share	$ 0.62	$ 0.47	$ 0.44
Issuance under equity compensation plans, shares	174,895	157,882	174,895
Stock Issued During Period, Shares, Conversion of Convertible Securities	0	0	0
Shares Awarded Through Acquisition	3,990,822	0	3,299,864
Stock Repurchased During Period, Shares	396,737	435,432	429,955