Advances from Federal Home Loan Bank (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank [Abstract]
Total FHLB advances	$ 395	$ 415
Monthly Amortizing Advances [Member]
Federal Home Loan Bank [Abstract]
Total FHLB advances	395	$ 415
Within 1 Year	22
2 Years	20
3 Years	21
4 Years	20
5 Years	21
After 5 Years	291
Federal Home Loan Bank Advances [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank stock used as collateral for advances	10,000
FHLB maximum borrowing capacity	531,400
Federal home loan bank letters of credit used for public fund pledging	53,800
Federal home loan bank advances available	$ 477,200
Federal Home Loan Bank Advances [Member] \| Minimum [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank advances, interest rate	0.00%
Federal Home Loan Bank Advances [Member] \| Maximum [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank advances, interest rate	2.00%
Federal Home Loan Bank Advances [Member] \| Weighted Average [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank advances, interest rate	0.06%
Federal Home Loan Bank Advances [Member] \| Monthly Amortizing Advances [Member] \| Weighted Average [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank advances, interest rate	0.06%	0.06%

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Amount of letters of credit provided by FHLB used for public fund pledging.

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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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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Amount of advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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Amount of maximum advances or credit lines available from the Federal Home Loan Bank (FHLB).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of advance from Federal Home Loan Bank (FHLBank) maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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