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Allowance for Credit Losses - Additional Information (Detail) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 25, 2022 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |
Allowance for credit loss |  | $ 97,944 | $ 86,062 | $ 97,944 | $ 86,062 | $ 96,049 | $ 85,376 | $ 85,941 | $ 91,847
Reclassification of financing receivable | $ 2,956 |  |  |  |  |  |  |  |
Cumulative effect adjustment, decrease in retained earnings |  | (1,042,177) | (966,780) | (1,042,177) | (966,780) | (1,109,182) | (1,000,184) | (942,539) | (925,114)
Threshold for loan analysis |  | 1,000 |  | 1,000 |  |  |  |  |
Interest lost on nonaccrual loans |  | 237 | 524 | 404 | 1,060 |  |  |  |
Interest income on nonaccrual loans |  | 6 | 159 | 13 | 176 |  |  |  |
Retained Earnings |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment, decrease in retained earnings |  | (491,705) | (427,575) | (491,705) | (427,575) | (479,868) | (466,959) | (408,211) | (381,999)
Common Stock |  |  |  |  |  |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |  |  |  |  |  |
Cumulative effect adjustment, decrease in retained earnings |  | $ (696,441) | $ (531,038) | $ (696,441) | $ (531,038) | $ (706,672) | $ (532,244) | $ (531,367) | $ (530,835)

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 + Details
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- Definition Amount of interest income on financing receivable on nonaccrual status. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447 + Details
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- Definition Amount of discount (premium) attributable to other factors on financing receivable purchased with credit deterioration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 19 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919265-210447 + Details
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- Definition Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554 + Details
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