Deposits - Summary of Deposit Balances (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Deposits [Abstract]
Non-interest-bearing checking accounts	$ 1,545,595,000	$ 1,869,509,000
Interest-bearing checking and money market accounts	3,138,609,000	3,185,440,000
Savings Deposits	710,251,000	798,003,000
Retail certificates of deposit less than $250,000	752,160,000	645,318,000
Retail certificates of deposit greater than $250,000	526,843,000	264,741,000
Brokered deposits	392,181,000	143,708,000
Total	$ 7,065,639,000	$ 6,906,719,000

Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts

No definition available.

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- Definition

The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.12)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of interest-bearing domestic third-party deposits placed by or through the assistance of a deposit broker, also known as brokered deposit liabilities.

+ References

+ Details

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- Definition

Amount of interest-bearing domestic money market demand account deposit liabilities.

+ References

+ Details

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- Definition

Amount of noninterest-bearing domestic checking deposit liabilities.

+ References

+ Details

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- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of $100,000 or more.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Industry Guide
-Number 3
-Section V
-Paragraph D-E
-Publisher SEC

+ Details

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- Definition

Amount of time deposit liabilities, including certificates of deposit, in denominations of less than $100,000.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Industry Guide
-Number 3
-Section V
-Paragraph D-E
-Publisher SEC

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