Note 2 - Debt Securities (Details Textual) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2019
USD ($)
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
USD ($)
|
|
| Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Total | $ 0 | $ 0 | $ 0 |
| Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | 35 | ||
| Available for Sale Securities Debt Securities, Number of Positions | 650 | ||
| Pledged Financial Instruments, Not Separately Reported, Securities, Total | $ 389,900 | $ 291,600 | |
| X | ||||||||||
- Definition The number of positions in available for sale debt securities held by the company. No definition available.
|
| X | ||||||||||
- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without an allowance for credit loss. Includes beneficial interest in securitized financial asset. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. No definition available.
|
| X | ||||||||||
- Definition Sum of the carrying amounts as of the date of the latest financial statement presented of securities which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee is not permitted to sell or re-pledge them to an unrelated party. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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