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Borrowings - FHLB Advances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
FHLB Advances
Secured Debt	$ 119,529	$ 119,529
FHLB Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	7,500
FHLB Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	37,000
1.78% Fixed Rate Hybrid Advance | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 7,500
Interest Rate	1.78%
Maturity Date	Aug. 21, 2020
1.48% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 7,500
Interest Rate	1.48%
Maturity Date	Sep. 19, 2022
Next Conversion Option Date	Sep. 20, 2021
1.96% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 7,500
Interest Rate	1.96%
Maturity Date	Sep. 29, 2023
Next Conversion Option Date	Sep. 29, 2022
2.32% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 5,000
Interest Rate	2.32%
Maturity Date	Oct. 25, 2024
Next Conversion Option Date	Oct. 25, 2023
2.53% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 5,000
Interest Rate	2.53%
Maturity Date	Nov. 28, 2025
Next Conversion Option Date	Nov. 29, 2024
2.83% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 5,000
Interest Rate	2.83%
Maturity Date	Dec. 29, 2026
Next Conversion Option Date	Dec. 29, 2025
2.01% Convertible Advances | Fixed Rate Hybrid Advances
FHLB Advances
Secured Debt	$ 7,000
Interest Rate	2.01%
Maturity Date	Dec. 03, 2027
Next Conversion Option Date	Dec. 03, 2026

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