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Note 2 - Securities (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Debt Securities, Available-for-Sale [Table Text Block]

						Gross				Gross
		Amortized				Unrealized				Unrealized				Fair
		Cost				Gains				Losses				Value
2022
U.S. Government agency debt obligations		$	453,836,000			$	0			$	(65,092,000	)		$	388,744,000
Mortgage-backed securities			38,002,000				19,000				(6,068,000	)			31,953,000
Municipal general obligation bonds			163,041,000				450,000				(9,058,000	)			154,433,000
Municipal revenue bonds			30,267,000				102,000				(3,063,000	)			27,306,000
Other investments			500,000				0				0				500,000
		$	685,646,000			$	571,000			$	(83,281,000	)		$	602,936,000
2021
U.S. Government agency debt obligations		$	398,874,000			$	266,000			$	(8,769,000	)		$	390,371,000
Mortgage-backed securities			41,906,000				549,000				(652,000	)			41,803,000
Municipal general obligation bonds			133,894,000				4,092,000				(392,000	)			137,594,000
Municipal revenue bonds			22,289,000				331,000				(145,000	)			22,475,000
Other investments			500,000				0				0				500,000
		$	597,463,000			$	5,238,000			$	(9,958,000	)		$	592,743,000

Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]

		Less than 12 Months								12 Months or More								Total
		Fair				Unrealized				Fair				Unrealized				Fair				Unrealized
Description of Securities		Value				Loss				Value				Loss				Value				Loss
2022
U.S. Government agency debt obligations		$	53,019,000			$	5,713,000			$	335,725,000			$	59,379,000			$	388,744,000			$	65,092,000
Mortgage-backed securities			31,127,000				6,068,000				12,000				0				31,139,000				6,068,000
Municipal general obligation bonds			97,252,000				4,516,000				32,870,000				4,542,000				130,122,000				9,058,000
Municipal revenue bonds			12,532,000				1,141,000				10,609,000				1,922,000				23,141,000				3,063,000
Other investments			0				0				0				0				0				0
		$	193,930,000			$	17,438,000			$	379,216,000			$	65,843,000			$	573,146,000			$	83,281,000
2021
U.S. Government agency debt obligations		$	274,287,000			$	5,274,000			$	110,053,000			$	3,495,000			$	384,340,000			$	8,769,000
Mortgage-backed securities			23,184,000				652,000				24,000				0				23,208,000				652,000
Municipal general obligation bonds			40,748,000				392,000				0				0				40,748,000				392,000
Municipal revenue bonds			12,843,000				137,000				414,000				8,000				13,257,000				145,000
Other investments			0				0				0				0				0				0
		$	351,062,000			$	6,455,000			$	110,491,000			$	3,503,000			$	461,553,000			$	9,958,000

Investments Classified by Contractual Maturity Date [Table Text Block]

		Weighted				Amortized				Fair
		Average Yield				Cost				Value
Due in one year or less			0.76%			$	21,278,000			$	20,732,000
Due from one to five years			1.22				249,262,000				227,357,000
Due from five to ten years			1.88				318,700,000				271,652,000
Due after ten years			3.03				57,904,000				50,742,000
Mortgage-backed securities			2.10				38,002,000				31,953,000
Other investments			4.94				500,000				500,000
			1.72%			$	685,646,000			$	602,936,000

X

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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