Borrowings - Term Advances Due to the FHLB (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB Advances	$ 27,675	$ 27,675
Federal Home Loan Bank of New York, Maturity, July 6, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	1.79%
FHLB Advances	$ 2,675	2,675
Federal Home Loan Bank of New York, Maturity, September 8, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	1.75%
FHLB Advances	$ 5,000	5,000
Federal Home Loan Bank of New York, Maturity, November 23, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	2.27%
FHLB Advances	$ 10,000	10,000
Federal Home Loan Bank of New York, Maturity, September 8, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	1.89%
FHLB Advances	$ 5,000	5,000
Federal Home Loan Bank of New York, Maturity, September 8, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	2.01%
FHLB Advances	$ 5,000	$ 5,000