Securities - Schedule of Securities with Gross Unrealized Losses and Fair value, Aggregated by Investment Category and Length of Time in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 18,080	$ 37,066
Less than 12 months, unrealized (losses)	(135)	(394)
12 months or more, fair value	41,272	11,548
12 months or more, unrealized (losses)	(1,273)	(431)
Total, fair value	59,352	48,614
Total, unrealized (losses)	(1,408)	(825)
Obligations of U.S. Government Corporations and Agencies [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	14,901	32,512
Less than 12 months, unrealized (losses)	(104)	(330)
12 months or more, fair value	37,186	10,008
12 months or more, unrealized (losses)	(1,186)	(278)
Total, fair value	52,087	42,520
Total, unrealized (losses)	(1,290)	(608)
Obligations of States and Political Subdivisions [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	3,179	4,172
Less than 12 months, unrealized (losses)	(31)	(60)
12 months or more, fair value	4,086	0
12 months or more, unrealized (losses)	(87)	0
Total, fair value	7,265	4,172
Total, unrealized (losses)	$ (118)	(60)
Corporate Bonds [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value		0
Less than 12 months, unrealized (losses)		0
12 months or more, fair value		1,540
12 months or more, unrealized (losses)		(153)
Total, fair value		1,540
Total, unrealized (losses)		(153)
Mutual Funds [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value		382
Less than 12 months, unrealized (losses)		(4)
12 months or more, fair value		0
12 months or more, unrealized (losses)		0
Total, fair value		382
Total, unrealized (losses)		$ (4)