Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Consolidated Statement of Changes in Stockholders' Equity
Stock repurchases, shares	51,500	49,500	57,057
Cash dividends paid per common share (in dollars per share)	$ 0.22	$ 0.44	$ 0.44
Number of stock options exercised	1,000	14,442	11,665