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Federal funds purchased and securities sold under agreements to repurchase - Federal Funds and Repurchase Agreements (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Federal funds purchased and securities sold under agreements to repurchase |  |
Year End Weighted Rate (as a percent) | 0.00% | 0.00%
Average Weighted Rate (as a percent) | 0.00% | 0.00%
Average Balance Outstanding | $ 39,564 | $ 29,512
Maximum Outstanding at any Month End | 74,910 | 33,622
Balance | $ 24,647 | $ 27,560
Federal funds purchased |  |
Federal funds purchased and securities sold under agreements to repurchase |  |
Year End Weighted Rate (as a percent) | 2.64% | 1.64%
Average Weighted Rate (as a percent) | 2.29% | 0.99%
Average Balance Outstanding | $ 1,242 | $ 322
Maximum Outstanding at any Month End | 12,863 | 1,067
Balance | $ 8,000 | $ 0
Short-term repurchase agreements |  |
Federal funds purchased and securities sold under agreements to repurchase |  |
Year End Weighted Rate (as a percent) | 0.00% | 0.29%
Average Weighted Rate (as a percent) | 3.51% | 0.38%
Average Balance Outstanding | $ 11,180 | $ 29,190
Maximum Outstanding at any Month End | 25,944 | 32,555
Balance | $ 0 | $ 27,560
Bank | Short-term repurchase agreements |  |
Federal funds purchased and securities sold under agreements to repurchase |  |
Year End Weighted Rate (as a percent) | 0.35% |
Average Weighted Rate (as a percent) | 0.67% |
Average Balance Outstanding | $ 27,142 |
Maximum Outstanding at any Month End | 36,103 |
Balance | $ 16,647 |

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