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Interest Rate Swaps (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Derivative [Line Items] |  |  |
Weighted average pay rate on interest-rate swaps | 4.60% | 4.53% | 4.46%
Weighted average receive rate on interest-rate swaps | 4.02% | 4.78% | 3.81%
Weighted average maturity (years) | 4 years 2 months 12 days | 4 years 4 months 24 days | 3 years 2 months 12 days
Fair value of interest-rate swaps | $ (1,898) | $ (767) | $ (653)
Fair value of loan yield maintenance provisions | 1,898 | 767 | 653
Interest rate swaps |  |  |
Derivative [Line Items] |  |  |
Notional amounts | $ 42,178 | $ 35,996 | $ 38,481

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