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Note 2 - Securities - Investments in an Unrealized Loss Position That Were Temporarily Impaired (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Less than 12 months, fair value, available for sale securities | $ 3,093 | $ 31,226
Less than 12 months, unrealized (loss), available for sale securities | (14) | (212)
12 months or more, fair value, available for sale securities | 0 | 13,083
12 months or more, unrealized (loss), available for sale securities | 0 | (127)
Total, fair value, available for sale securities | 3,093 | 44,309
Total, unrealized (loss), available for sale securities | (14) | (339)
Less than 12 months, fair value, held to maturity securities |  | 3,516
Less than 12 months, unrealized (loss), held to maturity securities |  | (10)
12 months or more, fair value, held to maturity securities |  | 5,936
12 months or more, unrealized (loss), held to maturity securities |  | (70)
Total, fair value, held to maturity securities |  | 9,452
Total, unrealized (loss), held to maturity securities |  | (80)
Less than 12 months, fair value, total securities |  | 34,742
Less than 12 months, unrealized (loss), total securities |  | (222)
12 months or more, fair value, total securities |  | 19,019
12 months or more, unrealized (loss), total securities |  | (197)
Total, fair value, total securities |  | 53,761
Total, unrealized (loss), total securities |  | (419)
US Agency and Mortgage-backed Securities [Member] |  |
Less than 12 months, fair value, available for sale securities | 3,093 | 29,853
Less than 12 months, unrealized (loss), available for sale securities | (14) | (207)
12 months or more, fair value, available for sale securities | 0 | 13,083
12 months or more, unrealized (loss), available for sale securities | 0 | (127)
Total, fair value, available for sale securities | 3,093 | 42,936
Total, unrealized (loss), available for sale securities | $ (14) | (334)
Less than 12 months, fair value, held to maturity securities |  | 3,516
Less than 12 months, unrealized (loss), held to maturity securities |  | (10)
12 months or more, fair value, held to maturity securities |  | 5,936
12 months or more, unrealized (loss), held to maturity securities |  | (70)
Total, fair value, held to maturity securities |  | 9,452
Total, unrealized (loss), held to maturity securities |  | (80)
Municipal Bonds [Member] |  |
Less than 12 months, fair value, available for sale securities |  | 1,373
Less than 12 months, unrealized (loss), available for sale securities |  | (5)
12 months or more, fair value, available for sale securities |  | 0
12 months or more, unrealized (loss), available for sale securities |  | 0
Total, fair value, available for sale securities |  | 1,373
Total, unrealized (loss), available for sale securities |  | $ (5)

X
- Definition The fair value of investment in available-for-sale and held-to-maturity debt securities in continuous unrealized loss position for 12 months or longer. + References No definition available. + Details
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- Definition The amount of accumulated unrealized loss on investment in available-for-sale and held-to-maturity debt securities in unrealized loss positions. + References No definition available. + Details
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- Definition The amount of accumulated unrealized loss on investment in available-for-sale and held-to-maturity securities in continuous loss position for 12 months or longer. + References No definition available. + Details
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- Definition The fair value of investment in available-for-sale and held-to-maturity debt securities in unrealized loss positions. + References No definition available. + Details
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- Definition The amount of accumulated unrealized loss on investment in available-for-sale and held-to-maturity securities in continuous loss position for less than 12 months + References No definition available. + Details
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- Definition Represents the aggregate fair value of investments in debt and equity securities categorized as available-for-sale and as held-to-maturity securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. + References No definition available. + Details
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