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v3.19.3.a.u2

Short-Term Borrowings (Short-Term Borrowings) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Short-term Debt [Line Items] |  |
Amount outstanding at period end | $ 2,714,872 | $ 1,589,128
Federal Funds Purchased [Member] |  |
Short-term Debt [Line Items] |  |
Amount outstanding at period end | 195,450 | 425
Average amount outstanding during period | 49,297 | 39,968
Maximum amount at any month end during period | $ 202,933 | $ 100,925
Weighted-average interest at period end | 1.60% | 2.00%
Weighted-average interest rate during period | 2.30% | 2.11%
Securities Sold Under Agreements to Repurchase [Member] |  |
Short-term Debt [Line Items] |  |
Amount outstanding at period end | $ 484,422 | $ 428,599
Average amount outstanding during period | 493,344 | 456,000
Maximum amount at any month end during period | $ 518,042 | $ 500,345
Weighted-average interest at period end | 0.54% | 0.32%
Weighted-average interest rate during period | 0.52% | 0.23%
FHLB Borrowings [Member] |  |
Short-term Debt [Line Items] |  |
Amount outstanding at period end | $ 2,035,000 | $ 1,160,104
Average amount outstanding during period | 1,399,503 | 1,694,804
Maximum amount at any month end during period | $ 1,941,774 | $ 2,410,258
Weighted-average interest at period end | 1.17% | 2.48%
Weighted-average interest rate during period | 1.96% | 2.02%

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