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Derivative Instruments and Hedging Activities - Additional Information (Detail) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2019 USD ($) derivative swap | Dec. 31, 2018 USD ($) derivative swap
Derivative Instruments, Gain (Loss) [Line Items] |  |
Reclassification adjustment from accumulated other comprehensive income | $ 1,000 |
Length of hedging exposure to variability in future cash flows (months) | 63 months |
Derivative, net liability position, aggregate fair value | $ 16,000 |
Minimum |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative expiration period | 30 days |
Maximum |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Derivative expiration period | 60 days |
Not Designated as Hedging Instrument | Residential mortgage loan commitments |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Aggregate notional amount | $ 5,800 | $ 3,600
Interest Rate Swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gross amounts not offset in the consolidated balance sheet, Cash collateral pledged | $ 19,462 | $ 702
Interest Rate Swaps | Derivative Designated as Cash Flow Hedges | Cash Flow Hedges |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Number of outstanding interest rate derivatives (derivative) | derivative | 5 | 6
Aggregate notional amount | $ 675,000 | $ 750,000
Interest Rate Swaps | Not Designated as Hedging Instrument |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Aggregate notional amount | $ 1,000,000 | $ 1,030,100
Number of interest rate swaps (swap) | swap | 98 | 98
Credit Contract | Not Designated as Hedging Instrument |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Aggregate notional amount | $ 115,800 | $ 94,900

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- Definition Derivative, Length of Hedging Exposure to Variability in Future Cash Flows + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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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=109980867&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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + 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=112277219&loc=d3e80845-113994 + Details
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- Definition The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959 + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Number of interest rate derivative instruments held by the entity at the reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 + Details
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