Parent Company Financial Information, Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statements of Income [Abstract]
Other operating expenses	$ (33,940)	$ (32,163)	$ (29,400)
Income tax benefit	(5,670)	(4,744)	(8,318)
Net income	14,721	12,551	8,748
Parent Company [Member]
Statements of Income [Abstract]
Dividends from subsidiary	0	0	0
Other operating expenses	(247)	(226)	(224)
Income tax benefit	73	66	92
Loss before undistributed earnings of subsidiary	(174)	(160)	(132)
Equity in undistributed earnings of subsidiary	14,895	12,711	8,880
Net income	$ 14,721	$ 12,551	$ 8,748