Note 19 - Common Stock (Details Textual) - USD ($) $ / shares in Units, $ in Millions																									12 Months Ended
		Dec. 31, 2022		Nov. 30, 2022	Oct. 31, 2022		Sep. 30, 2022		Aug. 30, 2022		Jul. 31, 2022		Jun. 30, 2022		May 31, 2022		Apr. 30, 2022		Mar. 31, 2022		Feb. 28, 2022		Jan. 31, 2022		Dec. 31, 2022	Dec. 14, 2021	Aug. 26, 2021	Dec. 31, 2004
Treasury Stock, Shares, Acquired (in shares)				26,726																					426,445
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)	[1]			$ 3.49
Repurchase Plan [Member]
Stock Repurchase Program, Authorized Amount																										$ 2	$ 2	$ 25
Treasury Stock, Shares, Acquired (in shares)		0		26,726	29,586		90,726		0		0		0		20,000		0		52,739		75,865		130,803		426,455
Treasury Stock Acquired, Average Cost Per Share (in dollars per share)		$ 0	[1]		$ 3.61	[1]	$ 3.31	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 3.15	[1]	$ 0	[1]	$ 4.36	[1]	$ 4.90	[1]	$ 5.08	[1]	$ 4.29

[1] Excludes broker commission.