Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	$ 127,677	$ 134,731
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	3,001	2,007
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses	35	607
Available-for-sale securities and Regulatory Stock, Fair Value	130,643	136,131
U.S. Government agencies and corporations
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	349	3,348
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	2	1
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses		39
Available-for-sale securities and Regulatory Stock, Fair Value	351	3,310
Obligations of states and political subdivisions
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	67,694	67,794
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	2,243	1,853
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses	6	21
Available-for-sale securities and Regulatory Stock, Fair Value	69,931	69,626
U.S. Government-sponsored mortgage-backed securities
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	45,972	48,566
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	530	75
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses	9	404
Available-for-sale securities and Regulatory Stock, Fair Value	46,493	48,237
U.S. Government-sponsored collateralized mortgage obligations
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	7,627	8,447
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	224	78
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses		44
Available-for-sale securities and Regulatory Stock, Fair Value	7,851	8,481
U.S. Government-guaranteed small business administration pools
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	6,035	6,576
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Gains	2
Available-for-sale Securities and Regulatory Stock, Gross Unrealized Losses	20	99
Available-for-sale securities and Regulatory Stock, Fair Value	6,017	6,477
Federal Home Loan Bank (FHLB) stock
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	2,769	2,609
Available-for-sale securities and Regulatory Stock, Fair Value	2,769	2,609
Federal Reserve Bank (FRB) stock
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	226	226
Available-for-sale securities and Regulatory Stock, Fair Value	226	226
Total regulatory stock
Summary of investment securities
Available-for-sale Securities and Regulatory Stock, Amortized Cost	2,995	2,835
Available-for-sale securities and Regulatory Stock, Fair Value	$ 2,995	$ 2,835