Consolidated Statement of Stockholders' Equity (Parentheticals) - $ / shares	3 Months Ended				12 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Common stock dividends, per share (in dollars per share)	$ 0.1	$ 0.1	$ 0.1	$ 0.1	$ 0.4	$ 0.4	$ 0.4