Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details)

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Note 4 - Securities - Investment Securities Continuous Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Less Than Twelve Months, Gross Unrealized Losses $ (961) $ (1,386)
Less Than Twelve Months, Fair Value 121,851 178,489
Twelve Months or More, Gross Unrealized Losses 0 (122)
Twelve Months or More, Fair Value 0 27,558
Total, Gross Unrealized Losses (961) (1,508)
Total, Fair Value 121,851 206,047
US Treasury and Government [Member]    
Less Than Twelve Months, Gross Unrealized Losses 0 (4)
Less Than Twelve Months, Fair Value 0 3,012
Twelve Months or More, Fair Value 0 0
Total, Gross Unrealized Losses 0 (4)
Total, Fair Value 0 3,012
US Treasury Securities [Member]    
Twelve Months or More, Gross Unrealized Losses 0 0
US Government Agencies Debt Securities [Member]    
Less Than Twelve Months, Gross Unrealized Losses 0 (2)
Less Than Twelve Months, Fair Value 0 266
Twelve Months or More, Gross Unrealized Losses 0 0
Twelve Months or More, Fair Value 0 0
Total, Gross Unrealized Losses 0 (2)
Total, Fair Value 0 266
Collateralized Mortgage Backed Securities [Member]    
Less Than Twelve Months, Gross Unrealized Losses (68) (1,206)
Less Than Twelve Months, Fair Value 34,639 153,330
Twelve Months or More, Gross Unrealized Losses 0 (112)
Twelve Months or More, Fair Value 0 24,911
Total, Gross Unrealized Losses (68) (1,318)
Total, Fair Value 34,639 178,241
US States and Political Subdivisions Debt Securities [Member]    
Less Than Twelve Months, Gross Unrealized Losses 0 (4)
Less Than Twelve Months, Fair Value 0 [1] 1,900
Twelve Months or More, Gross Unrealized Losses 0 (10)
Twelve Months or More, Fair Value 0 2,647
Total, Gross Unrealized Losses 0 (14)
Total, Fair Value 0 4,547
Corporate Debt Securities [Member]    
Less Than Twelve Months, Gross Unrealized Losses (893) (170)
Less Than Twelve Months, Fair Value 87,212 19,981
Twelve Months or More, Gross Unrealized Losses 0 0
Twelve Months or More, Fair Value 0 0
Total, Gross Unrealized Losses (893) (170)
Total, Fair Value $ 87,212 $ 19,981
[1] The municipal security with an unrealized loss for twelve months or more has an unrealized loss of $129.60.