Note 14 - Accumulated Other Comprehensive Income (Loss) - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Balance at Beginning of Year	$ 409,963	$ 285,097	$ 260,058
Other Comprehensive Income (Loss)	(11,805)	8,015	6,082
Balance at End of Year	433,368	409,963	285,097
AOCI Attributable to Parent [Member]
Balance at Beginning of Year	10,628	2,613	(3,469)
Other Comprehensive Income on AFS Securities Before Reclassifications - Net of Tax	(11,838)	7,728
Other Comprehensive Income on Equity Method Investments	(266)	180
Reclassification Adjustment for Gains (Losses) Realized - Net of Tax	299	107
Other Comprehensive Income (Loss)	(11,805)	8,015	6,082
Balance at End of Year	$ (1,177)	$ 10,628	$ 2,613