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Note 3 - Securities - Securities With Unrealized Losses (Details) $ in Thousands	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)
Count, less than 12 months	209
Collateralized mortgage obligations - residential, fair value	$ 128,189
Unrealized loss, less than 12 months	$ (5,246)
Count, 12 months or more	1
Fair value, 12 months or more	$ 197
Unrealized loss, 12 months or more	$ (2)
Count, total	210
Fair value, total	$ 128,386
Unrealized loss, total	$ (5,248)
US States and Political Subdivisions Debt Securities [Member]
Count, less than 12 months	2
Collateralized mortgage obligations - residential, fair value	$ 387
Unrealized loss, less than 12 months	$ (13)
Count, 12 months or more	0
Fair value, 12 months or more	$ 0
Unrealized loss, 12 months or more	$ 0
Count, total	2
Fair value, total	$ 387
Unrealized loss, total	$ (13)
US Treasury Securities [Member]
Count, less than 12 months	187	53
Collateralized mortgage obligations - residential, fair value	$ 123,930	$ 62,246
Unrealized loss, less than 12 months	$ (5,193)	$ (76)
Count, 12 months or more	0	0
Fair value, 12 months or more	$ 0	$ 0
Unrealized loss, 12 months or more	$ 0	$ 0
Count, total	187	53
Fair value, total	$ 123,930	$ 62,246
Unrealized loss, total	$ (5,193)	$ (76)
Residential Mortgage-Backed Securities [Member]
Count, less than 12 months	15
Collateralized mortgage obligations - residential, fair value	$ 2,746
Unrealized loss, less than 12 months	$ (33)
Count, 12 months or more	0
Fair value, 12 months or more	$ 0
Unrealized loss, 12 months or more	$ 0
Count, total	15
Fair value, total	$ 2,746
Unrealized loss, total	$ (33)
Collateralized Mortgage-Backed Securities [Member]
Count, less than 12 months	5
Collateralized mortgage obligations - residential, fair value	$ 1,126
Unrealized loss, less than 12 months	$ (7)
Count, 12 months or more	1
Fair value, 12 months or more	$ 197
Unrealized loss, 12 months or more	$ (2)
Count, total	6
Fair value, total	$ 1,323
Unrealized loss, total	$ (9)

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- 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.

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