Other Borrowing Arrangements - Tabular Disclosure (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Line Items]
Average balance outstanding	$ 35,633	$ 23,321
Amount	45,711	72,459
Maximum month-end balance during the year	112,262	74,622
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Average balance outstanding	22,090	14,332
Amount	$ 25,711	$ 16,359
Average interest rate during the year	0.40%	0.40%
Maximum month-end balance during the year	$ 27,712	$ 17,672
Weighted average interest rate	0.40%	0.40%
Overnight Federal Home Loan Bank Advances [Member]
Short-term Debt [Line Items]
Average balance outstanding	$ 12,408	$ 8,967
Amount	$ 0	$ 56,100
Average interest rate during the year	2.09%	2.19%
Maximum month-end balance during the year	$ 63,700	$ 56,100
Weighted average interest rate	0.00%	2.43%
Short Term Federal Home Loan Bank Advances [Member]
Short-term Debt [Line Items]
Average balance outstanding	$ 822	$ 0
Amount	$ 20,000	$ 0
Average interest rate during the year	1.69%	0.00%
Maximum month-end balance during the year	$ 20,000	$ 0
Weighted average interest rate	1.69%	0.00%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Average balance outstanding	$ 313	$ 22
Amount	$ 0	$ 0
Average interest rate during the year	0.00%	0.00%
Maximum month-end balance during the year	$ 850	$ 850
Weighted average interest rate	0.00%	0.00%