Refers to number of securities included in investment portfolio.

No definition available.

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- Definition

Amount of accumulated unrealized loss on investments in debt securities classified as held-to-maturity and available-for-sale in a continuous loss position.

+ References

No definition available.

+ Details

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- Definition

This item represents the fair value of securities categorized as held-to-maturity and available-for-sale which are in an unrealized loss position.

+ References

No definition available.

+ Details

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- Definition

Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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- Definition

Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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- 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 unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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- Definition

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

+ References

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- Definition

This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.

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- Definition

Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Note 6 - Investment Securities (Details Textual)	3 Months Ended		9 Months Ended
Note 6 - Investment Securities (Details Textual)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses			$ 0
Securities, Continuous Loss Position, Accumulated Loss	$ 499,100,000		499,100,000		$ 36,100,000
Securities, Continuous Unrealized Loss Position, Fair Value	2,300,000,000		2,300,000,000		2,100,000,000
Proceeds from Sale of Debt Securities, Available-for-Sale	34,100,000	$ 0	34,073,000	$ 0
Debt Securities, Available-for-Sale, Realized Gain (Loss), Total			46,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	12,000		12,000
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Ending Balance	$ 0		$ 0		$ 0
Mortgage-Backed Securities, Issued by Private Enterprises [Member]
Number of Securities in Investment Portfolio	0		0		0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] \| Subprime [Member]
Number of Securities in Investment Portfolio					0
Mortgage-Backed Securities, Issued by Private Enterprises [Member] \| AltA [Member]
Number of Securities in Investment Portfolio	0		0		0
Collateralized Mortgage Obligations [Member]
Number of Securities in Investment Portfolio	0		0		0
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	103		103
Collateralized Mortgage Obligations [Member] \| Subprime [Member]
Number of Securities in Investment Portfolio	0		0		0
Collateralized Mortgage Obligations [Member] \| AltA [Member]
Number of Securities in Investment Portfolio	0		0		0
US Government Agencies Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	17		17
Agency Mortgage-backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	103		103
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	15		15
Corporate Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions	22		22