Borrowings (Details Textual) - USD ($) $ in Thousands	May 01, 2019	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Lendable collateral of loans		$ 103,100
Remaining credit avabailable		341,400
Outstanding balance on line of credit		0
Line of credit, current borrowing capacity		55,000
Subordinated debt		24,229	$ 24,229
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Short-term debt, borrowing capacity		0
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 10,000
Proceeds from line of credit	$ 5,300
Outstanding balance on line of credit		5,300
Revolving Credit Facility | Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.40%
Term Note
Debt Instrument [Line Items]
Debt instrument, stated interest rate	4.70%
Notes payable balance		$ 9,300
Line of credit, maximum amount	$ 10,000
Minimum
Debt Instrument [Line Items]
FHLB interest rate		0.52%
Maximum
Debt Instrument [Line Items]
FHLB interest rate		3.51%