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Note 2 - Securities - Summary of Amortized Costs and Fair Values of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortized cost, available for sale securities	$ 303,486	$ 290,058
Gross unrealized gains, available for sale securities	288	2,033
Gross unrealized losses, available for sale securities	(18,881)	(2,596)
Fair value, available for sale securities	284,893	289,495
Amortized cost, available for sale securities	303,486	290,058
Securities available for sale, at fair value	284,893	289,495
Amortized cost, held to maturity securities	81,640	33,441
Gross unrealized gains, held to maturity securities	12	242
Gross unrealized losses, held to maturity securities	(3,355)	(66)
Fair value, held to maturity securities	78,297	33,617
Securities held to maturity, at amortized cost (fair value, 2022, $78,297; 2021, $33,617)	81,640	33,441
Securities, fair value	78,297	33,617
Amortized cost	385,126	323,499
Gross unrealized gains	300	2,275
Gross unrealized losses	(22,236)	(2,662)
Total securities, fair value	363,190	323,112
US Treasury Securities [Member]
Amortized cost, available for sale securities	59,797	39,871
Gross unrealized gains, available for sale securities	0	37
Gross unrealized losses, available for sale securities	(2,276)	(250)
Fair value, available for sale securities	57,521	39,658
Amortized cost, available for sale securities	59,797	39,871
Securities available for sale, at fair value	57,521	39,658
US Agency and Mortgage-backed Securities [Member]
Amortized cost, available for sale securities	171,513	177,131
Gross unrealized gains, available for sale securities	140	1,085
Gross unrealized losses, available for sale securities	(10,392)	(1,837)
Fair value, available for sale securities	161,261	176,379
Amortized cost, available for sale securities	171,513	177,131
Securities available for sale, at fair value	161,261	176,379
Amortized cost, held to maturity securities	69,367	26,392
Gross unrealized gains, held to maturity securities	0	124
Gross unrealized losses, held to maturity securities	(2,812)	(53)
Fair value, held to maturity securities	66,555	26,463
Securities held to maturity, at amortized cost (fair value, 2022, $78,297; 2021, $33,617)	69,367	26,392
Securities, fair value	66,555	26,463
US States and Political Subdivisions Debt Securities [Member]
Amortized cost, available for sale securities	70,165	71,037
Gross unrealized gains, available for sale securities	148	910
Gross unrealized losses, available for sale securities	(6,211)	(509)
Fair value, available for sale securities	64,102	71,438
Amortized cost, available for sale securities	70,165	71,037
Securities available for sale, at fair value	64,102	71,438
Amortized cost, held to maturity securities	9,273	7,049
Gross unrealized gains, held to maturity securities	12	118
Gross unrealized losses, held to maturity securities	(543)	(13)
Fair value, held to maturity securities	8,742	7,154
Securities held to maturity, at amortized cost (fair value, 2022, $78,297; 2021, $33,617)	9,273	7,049
Securities, fair value	8,742	7,154
Corporate Debt Securities [Member]
Amortized cost, available for sale securities	2,011	2,019
Gross unrealized gains, available for sale securities	0	1
Gross unrealized losses, available for sale securities	(2)	0
Fair value, available for sale securities	2,009	2,020
Amortized cost, available for sale securities	2,011	2,019
Securities available for sale, at fair value	2,009	$ 2,020
Amortized cost, held to maturity securities	3,000
Gross unrealized gains, held to maturity securities	0
Gross unrealized losses, held to maturity securities	0
Fair value, held to maturity securities	3,000
Securities held to maturity, at amortized cost (fair value, 2022, $78,297; 2021, $33,617)	3,000
Securities, fair value	$ 3,000

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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