Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Retained Earnings [Member]
Dividends on common stock, per share (in dollars per share)		$ 0.15				$ 0.13
Dividends on common stock, per share (in dollars per share)	$ 0.15		$ 0.15	$ 0.13	$ 0.13