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Note 10 - Derivative Instruments and Hedging Activities - Notional or Contractual Amounts and Fair Values of Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Notional or contractual amount $ 5,226 $ 5,483
Derivative assets 12
Derivative liabilities 302
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]    
Notional or contractual amount 5,226 5,483
Derivative assets 12
Derivative liabilities $ 302