Borrowings - Schedule of Debt (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Federal home loan balance	$ 1,182,510,000
Advances from federal home loan banks	0	$ 227,907,000
Federal Home Loan Bank, Advances, Maturing Through 2033
Debt Instrument [Line Items]
Weighted average interest rate		2.13%
Advances from federal home loan banks	$ 0	$ 227,907,000
Federal Home Loan Bank, Advances, Maturing Through 2033 \| Minimum
Debt Instrument [Line Items]
Fixed interest rate		1.27%
Federal Home Loan Bank, Advances, Maturing Through 2033 \| Maximum
Debt Instrument [Line Items]
Fixed interest rate		5.24%
Federal Home Loan Bank, Advances, Open Repo Borrowings
Debt Instrument [Line Items]
Fixed interest rate	0.41%
Federal home loan balance	$ 150,000
Advances from federal home loan banks	$ 0	$ 0

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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Interest rate of advances made and reported by Federal Home Loan Bank (FHLBank).

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