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Advances from Federal Home Loan Bank (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank [Abstract]
Total FHLB advances	$ 436	$ 845
Monthly Amortizing Advances [Member]
Federal Home Loan Bank [Abstract]
Total FHLB advances	436	$ 845
Within 1 Year	22
2 Years	20
3 Years	21
4 Years	20
5 Years	20
After 5 Years	333
Federal Home Loan Bank Advances [Member]
Federal Home Loan Bank [Abstract]
Federal home loan bank stock used as collateral for advances	14,700
FHLB maximum borrowing capacity	555,600
Federal home loan bank letters of credit used for public fund pledging	243,000
Federal home loan bank advances available	$ 312,200
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	0.07%
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	0.07%	1.14%

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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 advances from Federal Home Loan Bank (FHLBank) maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of advances from Federal Home Loan Bank (FHLBank) maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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