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Derivative Instruments And Hedging Activities - Narrative (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) contract Swap position | Dec. 31, 2019 USD ($) Swap contract
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification from AOCI to interest expense | $ 14,800 |
Period for hedging exposure to the variability in future cash flows for forecasted transactions | 59 months |
Derivative, net liability position, fair value | $ 102,100 |
Interest Rate Contract |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Cash collateral pledged | $ 97,641 | $ 45,727
Not Designated as Hedging Instrument | Minimum |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative expiration period | 30 days |
Not Designated as Hedging Instrument | Maximum |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative expiration period | 60 days |
Not Designated as Hedging Instrument | Interest rate swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of interest rate swaps | Swap | 155 | 140
Derivative notional amount | $ 1,400,000 | $ 1,400,000
Not Designated as Hedging Instrument | Interest rate caps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of interest rate swaps | Swap | 12 | 4
Derivative notional amount | $ 204,900 | $ 78,600
Not Designated as Hedging Instrument | Residential mortgage loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative notional amount | 11,900 | 4,500
Not Designated as Hedging Instrument | Credit contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative notional amount | $ 177,200 | $ 167,100
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of interest rate swaps | contract | 5 | 4
Derivative notional amount | $ 1,100,000 | $ 725,000
Fair Value Hedging | Designated as Hedging Instrument | Interest rate swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of interest rate swaps | position | 24 |
Derivative notional amount | $ 272,300 |

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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226016-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121590274&loc=d3e41678-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=121549185&loc=d3e80845-113994 + Details
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