Note 7 - Derivatives and Hedging Activities (Details) $ in Thousands	1 Months Ended		3 Months Ended
	Dec. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($)	Dec. 31, 2020 USD ($) item
Deposits	$ 4,599,137	$ 3,911,051	$ 4,599,137
Cash Flow Hedging
Deposits	$ 300,000		$ 300,000
Interest rate cap
Number redesignated interest rate caps | item	3		3
Amount of derivatives redesignated	$ 800		$ 800
Loss on change in designation	$ 649
Interest rate cap | Cash Flow Hedging
Initial premium paid upfront for the two caps		$ 3,500
Interest rate swap
Termination of Interest rate swaps			40,000
Loss on termination of interest rate swaps			$ 808