Securities, Available For Sale securities and Held-to-maturity Securities (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($) security	Sep. 30, 2018 security	Sep. 30, 2019 USD ($) security	Sep. 30, 2018 security	Dec. 31, 2018 USD ($)
Amortized Cost [Abstract]
Due in one year or less	$ 9,033		$ 9,033
Amortized Cost	9,033		9,033		$ 12,078
Estimated Fair Value [Abstract]
Due in one year or less	9,029		9,029
Fair Value	9,029		9,029		11,978
Amortized Cost [Abstract]
Due in one year or less	5,002		5,002
Due after one through five years	3,978		3,978
Mortgage-backed securities	21,322		21,322
Amortized Cost	30,302		30,302		38,912
Estimated Fair Value [Abstract]
Due in one year or less	4,998		4,998
Due after one through five years	4,095		4,095
Mortgage-backed securities	21,366		21,366
Fair Value	$ 30,459		$ 30,459		38,212
Number of securities sold during the period | security	0	0	0	0
Collateral Pledged
Estimated Fair Value [Abstract]
Securities pledged as collateral for borrowings	$ 0		$ 0		$ 0