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Note 3 - Securities - Securities With Unrealized Losses (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Count, less than 12 months	180
Collateralized mortgage obligations - residential, fair value	$ 148,388
Unrealized loss, less than 12 months	$ (4,581)
Count, 12 months or more	54
Fair value, 12 months or more	$ 58,835
Unrealized loss, 12 months or more	$ (3,707)
Count, total	234
Fair value, total	$ 207,223
Unrealized loss, total	$ (8,288)
US States and Political Subdivisions Debt Securities [Member]
Count, less than 12 months	1
Collateralized mortgage obligations - residential, fair value	$ 225
Unrealized loss, less than 12 months	$ (15)
Count, 12 months or more	0
Fair value, 12 months or more	$ 0
Unrealized loss, 12 months or more	$ 0
Count, total	1
Fair value, total	$ 225
Unrealized loss, total	$ (15)
US Treasury Securities [Member]
Count, less than 12 months	147	53
Collateralized mortgage obligations - residential, fair value	$ 104,439	$ 62,246
Unrealized loss, less than 12 months	$ (4,104)	$ (76)
Count, 12 months or more	53	0
Fair value, 12 months or more	$ 58,664	$ 0
Unrealized loss, 12 months or more	$ (3,699)	$ 0
Count, total	200	53
Fair value, total	$ 163,103	$ 62,246
Unrealized loss, total	$ (7,803)	$ (76)
US Government-sponsored Enterprises Debt Securities [Member]
Count, less than 12 months	9
Collateralized mortgage obligations - residential, fair value	$ 39,699
Unrealized loss, less than 12 months	$ (301)
Count, 12 months or more	0
Fair value, 12 months or more	$ 0
Unrealized loss, 12 months or more	$ 0
Count, total	9
Fair value, total	$ 39,699
Unrealized loss, total	$ (301)
Residential Mortgage-Backed Securities [Member]
Count, less than 12 months	18
Collateralized mortgage obligations - residential, fair value	$ 3,016
Unrealized loss, less than 12 months	$ (143)
Count, 12 months or more	0
Fair value, 12 months or more	$ 0
Unrealized loss, 12 months or more	$ 0
Count, total	18
Fair value, total	$ 3,016
Unrealized loss, total	$ (143)
Collateralized Mortgage-Backed Securities [Member]
Count, less than 12 months	5
Collateralized mortgage obligations - residential, fair value	$ 1,009
Unrealized loss, less than 12 months	$ (18)
Count, 12 months or more	1
Fair value, 12 months or more	$ 171
Unrealized loss, 12 months or more	$ (8)
Count, total	6
Fair value, total	$ 1,180
Unrealized loss, total	$ (26)

X

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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-Publisher FASB
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-SubTopic 30
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