Securities - Schedule of Securities with Gross Unrealized Losses, Investment Category and Length of Time in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 3,484	$ 18,080
Less than 12 months, unrealized (losses)	(7)	(135)
12 months or more, fair value	5,829	41,272
12 months or more, unrealized (losses)	(49)	(1,273)
Total, fair value	9,313	59,352
Total, unrealized (losses)	(56)	(1,408)
Obligations of U.S. Government Corporations and Agencies [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	2,788	14,901
Less than 12 months, unrealized (losses)	(6)	(104)
12 months or more, fair value	5,829	37,186
12 months or more, unrealized (losses)	(49)	(1,186)
Total, fair value	8,617	52,087
Total, unrealized (losses)	(55)	(1,290)
Obligations of States and Political Subdivisions [Member]
Securities in Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	696	3,179
Less than 12 months, unrealized (losses)	(1)	(31)
12 months or more, fair value	0	4,086
12 months or more, unrealized (losses)	0	(87)
Total, fair value	696	7,265
Total, unrealized (losses)	$ (1)	$ (118)