Loans and Allowance for Loan Losses - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) Loan Property	Dec. 31, 2017 USD ($) Loan Property
Troubled Debt Restructurings [Abstract]
Number of Contracts	0	0
Number of TDRs with defaults occurring within 12 months of modification	0	0
Number of TDR loans in the portfolio	6	10
TDR loans in the portfolio | $	$ 3,400	$ 5,600
Number of TDR loans current and performing	5	10
Residential Real Estate [Member]
Troubled Debt Restructurings [Abstract]
Number of foreclosed properties in possession | Property	0	0
Number of foreclosed properties in possession or in process of foreclosure | Property		1
Mortgage Loans in Process of Foreclosure, Amount | $	$ 0	$ 65,000