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Other Borrowed Funds (Details) | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) loan | Dec. 31, 2017 USD ($)
Federal Home Loan Bank advances |  |
Other borrowed funds | $ 705,665,000 | $ 1,195,225,000
Federal home loan bank advances maturing November 2027 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | 100,000,000 |
Federal home loan Bank advances maturing December 2027 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | 150,000,000 |
Federal Home Loan Bank advances - short-term |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | $ 268,975,000 | $ 945,225,000
Rate on balance outstanding at year end (as a percent) | 2.70% | 1.44%
Average daily balance | $ 621,357,000 | $ 839,858,000
Average rate (as a percent) | 1.97% | 1.23%
Maximum amount outstanding at any month end | $ 1,007,100,000 | $ 1,043,250,000
Federal Home Loan Bank advances - long-term |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | $ 436,690,000 | $ 250,000,000
Rate on balance outstanding at year end (as a percent) | 1.73% | 1.26%
Average daily balance | $ 302,373,000 | $ 51,644,000
Average rate (as a percent) | 1.71% | 1.26%
Maximum amount outstanding at any month end | $ 436,700,000 | $ 250,000,000
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank advances maturing July 2028 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | 75,000,000,000 |
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank advances maturing March 2033 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | 100,000,000,000 |
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank advances maturing August 2033 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | $ 250,000,000,000 |
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank amortizing advances |  |
Federal Home Loan Bank advances |  |
Number of amortizing advances | loan | 2 |
Amortizing in 2019 | $ 179,000,000 |
Amortizing in 2020 | 179,000,000 |
Amortizing in 2021 | 179,000,000 |
Amortizing in 2022 | 179,000,000 |
Amortizing in 2023 | 179,000,000 |
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank advances maturing December 2033 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | 3,200,000,000 |
Federal Home Loan Bank advances - long-term | Federal Home Loan Bank advances maturing November 2033 |  |
Federal Home Loan Bank advances |  |
Other borrowed funds | $ 8,490,000,000 |

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- Definition Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition The calculated average balance outstanding for the year for all Federal Home Loan Bank advances as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The calculated weighted average interest rate for Federal Home Loan Bank advances outstanding as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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