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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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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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- Definition Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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