Securities - Schedule of Marketable Securities in Unrealized Loss Position (Details) $ in Thousands	Dec. 31, 2019 USD ($) security	Dec. 31, 2018 USD ($) security
Available for sale:
Total number in a loss position | security	18	45
Less than 12 months, estimated fair value	$ 7,073	$ 5,416
Less than 12 months, unrealized loss	(40)	(53)
12 months and greater, estimated fair value	11,739	35,038
12 months and greater, unrealized loss	(348)	(1,197)
Estimated fair value	18,812	40,454
Unrealized loss	$ (388)	$ (1,250)
Held to maturity:
Held to maturity, Total number in a loss position | security		9
Held to maturity, Less than 12 months Estimated fair value		$ 1,277
Held to maturity, Less than 12 months Unrealized loss		(15)
Held to maturity, 12 months and greater, Estimated fair value		6,687
Held to maturity, 12 months and greater, Unrealized loss		(269)
Held to maturity, Total Estimated fair value		7,964
Held to maturity, Total Unrealized loss		$ (284)
U.S. Government sponsored entities
Available for sale:
Total number in a loss position | security	1	5
Less than 12 months, estimated fair value	$ 0	$ 0
Less than 12 months, unrealized loss	0	0
12 months and greater, estimated fair value	1,995	5,642
12 months and greater, unrealized loss	(2)	(116)
Estimated fair value	1,995	5,642
Unrealized loss	$ (2)	$ (116)
Held to maturity:
Held to maturity, Total number in a loss position | security		2
Held to maturity, Less than 12 months Estimated fair value		$ 0
Held to maturity, Less than 12 months Unrealized loss		0
Held to maturity, 12 months and greater, Estimated fair value		2,434
Held to maturity, 12 months and greater, Unrealized loss		(94)
Held to maturity, Total Estimated fair value		2,434
Held to maturity, Total Unrealized loss		$ (94)
State and political subdivisions
Available for sale:
Total number in a loss position | security	1	4
Less than 12 months, estimated fair value	$ 0	$ 0
Less than 12 months, unrealized loss	0	0
12 months and greater, estimated fair value	1,013	3,129
12 months and greater, unrealized loss	(12)	(120)
Estimated fair value	1,013	3,129
Unrealized loss	$ (12)	$ (120)
Residential mortgage-backed securities
Available for sale:
Total number in a loss position | security	10	31
Less than 12 months, estimated fair value	$ 3,707	$ 4,445
Less than 12 months, unrealized loss	(27)	(23)
12 months and greater, estimated fair value	4,996	20,480
12 months and greater, unrealized loss	(79)	(597)
Estimated fair value	8,703	24,925
Unrealized loss	$ (106)	$ (620)
Held to maturity:
Held to maturity, Total number in a loss position | security		5
Held to maturity, Less than 12 months Estimated fair value		$ 1,277
Held to maturity, Less than 12 months Unrealized loss		(15)
Held to maturity, 12 months and greater, Estimated fair value		821
Held to maturity, 12 months and greater, Unrealized loss		(37)
Held to maturity, Total Estimated fair value		2,098
Held to maturity, Total Unrealized loss		$ (52)
Corporate and other securities
Available for sale:
Total number in a loss position | security	6	5
Less than 12 months, estimated fair value	$ 3,366	$ 971
Less than 12 months, unrealized loss	(13)	(30)
12 months and greater, estimated fair value	3,735	5,787
12 months and greater, unrealized loss	(255)	(364)
Estimated fair value	7,101	6,758
Unrealized loss	$ (268)	$ (394)
Commercial mortgage-backed securities
Held to maturity:
Held to maturity, Total number in a loss position | security		2
Held to maturity, Less than 12 months Estimated fair value		$ 0
Held to maturity, Less than 12 months Unrealized loss		0
Held to maturity, 12 months and greater, Estimated fair value		3,432
Held to maturity, 12 months and greater, Unrealized loss		(138)
Held to maturity, Total Estimated fair value		3,432
Held to maturity, Total Unrealized loss		$ (138)