Note 19 - Common Stock - Stock Repurchase Activity (Details) - USD ($)																									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
Treasury Stock, Shares, Acquired (in shares)				26,726																					426,445
Average Price Paid per Share (in dollars per share)	[1]			$ 3.49
Repurchase Plan [Member]
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
Average Price Paid 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
Maximum Dollar Value that May Yet be Purchased Under the Programs		$ 268,158		$ 268,158	$ 361,476		$ 468,158		$ 768,156		$ 768,156		$ 768,156		$ 768,156		$ 831,229		$ 831,229		$ 1,061,426		$ 1,432,822		$ 268,158

[1] Excludes broker commission.