Consolidated Statement of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Exercises of stock options (in shares)				12,000
Common stock issued to dividend reinvestment plan and employee benefits plans (in shares)	37,863	34,190	59,455	76,613
Common stock issued for acquisitions (in shares)	8,130,633		8,130,633
Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares issued (in shares)	89,095	60,199	151,347	81,178
Vesting of restricted stock, net of shares surrendered to cover payroll taxes, shares deferred (in shares)	13,164	14,919	37,509	51,580
Purchases of common stock (in shares)	0	195,443	826,482	500,495
Common stock issued from deferred compensation plan, net of shares surrendered to cover payroll taxes (in shares)	18,396	34	82,432	70,826
Common stock dividends (in dollars per share)	$ 0.18	$ 0.17	$ 0.54	$ 0.50
Preferred Stock
Issuance of stock (in shares)			4,000