v3.22.4
Note 4 - Investment and Equity Securities (Details Textual)
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Equity Securities, FV-NI, Current $ 915,000 $ 818,000
Equity Securities, FV-NI, Unrealized Gain (Loss), Total [1] (173,000) 209,000
Equity Securities, FV-NI, Realized Gain (Loss), Total 0 0
Proceeds from Sale and Maturity of Marketable Securities 57,887,000 0
Realized Investment Gains (Losses), Total $ 0  
Proceeds from Sale of Investment Securities   0
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions 141  
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions 60  
Available-for-sale Securities, Percentage of Portfolio 81.70%  
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total $ 0 0
Asset Pledged as Collateral [Member] | Deposits [Member]    
Financial Instruments, Owned, at Fair Value, Total $ 89,900,000 $ 77,100,000
[1] Not within scope of ASC 606