Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Topic 820
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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
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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.

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No definition available.

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

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-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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- Definition

Fair value portion of other assets.

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No definition available.

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- Definition

Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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- Definition

Unused amount of commitments to extend credit to customers.

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Unused Commitments To Extend Credit, Written Up

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Fair Value Measurements (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Remaining unfunded commitment	$ 906	$ 906		$ 5,975
Unused commitments to extend credit	10,837,479	10,837,479		$ 7,152,331
Transfer of loans from portfolio to loans-held-for-sale		91,815	$ 48,395
Loans in process of foreclosure	15,200	15,200
Portion at Other than Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Transfer of loans from portfolio to loans-held-for-sale		0
Fair Value, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	2,700	2,700
Rabbi Trust
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	8,900	8,900
Alternative investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other assets	18,200	18,200
Carrying amount of alternative investments	700	700
Remaining unfunded commitment	0	0
Write-down	400	1,200
Alternative investments carrying amount	70,400	70,400
Alternative investments \| Fair Value, Nonrecurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unused commitments to extend credit	30,600	30,600
Unused commitments to extend credit, written up	$ 0	$ 0