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Borrowings - Short Term Borrowings (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
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Debt Disclosure [Abstract] |  |
FHLB advances | $ 700,000 | $ 850,000
Federal funds purchased | 75,000 | 250,000
Total short-term debt | $ 775,000 | $ 1,100,000
FHLB advances, rate | 0.26% | 1.19%
Federal funds purchased, rate | 0.05% | 0.09%

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- Definition Discloses the single interest rate [if] applicable to short-term advances from the Federal Home Loan Bank as of the Balance Sheet date. + References No definition available. + Details
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- Definition Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + 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 Reference 2: 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=123465755&loc=d3e1835-112601 + Details
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