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Note 7 - Derivatives and Hedging Activities - Summary of Interest Rate Cap Derivatives (Details) - Designated as Hedging Instrument [Member] - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Derivative Instrument One Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 112 |
Notional Amount | $ 25,000 |
Derivative Instrument One Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.75% |
Derivative Instrument Two Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 218 |
Notional Amount | $ 50,000 |
Derivative Instrument Two Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.57% |
Derivative Instrument Three Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 96 |
Notional Amount | $ 25,000 |
Derivative Instrument Three Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.90% |
Derivative Instrument Four Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 109 |
Notional Amount | $ 25,000 |
Derivative Instrument Four Maturing 2023 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.80% |
Derivative Instrument One Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 214 |
Notional Amount | $ 25,000 |
Derivative Instrument One Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.75% |
Derivative Instrument Two Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 401 |
Notional Amount | $ 50,000 |
Derivative Instrument Two Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.57% |
Derivative Instrument Three Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 202 |
Notional Amount | $ 25,000 |
Derivative Instrument Three Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.90% |
Derivative Instrument Four Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 201 |
Notional Amount | $ 25,000 |
Derivative Instrument Four Maturing 2024 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.80% |
Derivative Instrument One Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 337 |
Notional Amount | $ 25,000 |
Derivative Instrument One Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.75% |
Derivative Instrument Two Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 617 |
Notional Amount | $ 50,000 |
Derivative Instrument Two Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.57% |
Derivative Instrument Three Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 332 |
Notional Amount | $ 25,000 |
Derivative Instrument Three Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.90% |
Derivative Instrument Four Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | $ 309 |
Notional Amount | $ 25,000 |
Derivative Instrument Four Maturing 2025 [Member] | Cash Flow Hedging [Member] | Other Assets [Member] | London Interbank Offered Rate (LIBOR) |  |
Derivative, Basis Spread on Variable Rate | 1.80% |
Interest rate cap | Other Assets [Member] |  |
Notional Amount | $ 30,000 |
Interest rate cap | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset | 3,148 | $ 459
Notional Amount | 405,000 |
Interest rate swap | Cash Flow Hedging [Member] | Other Liabilities. |  |
Notional Amount | 39,000 |
Maturity Of 2019 | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset |  | 117
Notional Amount | 15,000 |
Maturity Of 2021 | Cash Flow Hedging [Member] | Other Assets [Member] |  |
Fair Value - Asset |  | $ 342
Notional Amount | $ 15,000 |

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