Parent Corporation Only Financial Statements (Parent Company Only Statements of Income and Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Expenses:
Interest expense	$ 15,492	$ 12,054
Other operating expenses	2,705	2,898
Income before income taxes	19,257	16,773
Income tax benefit	(3,552)	(3,085)
Net income	15,705	13,688
Comprehensive income	18,949	12,366
Parent Company [Member]
Income:
Other operating income	7	8
Total income	7	8
Expenses:
Interest expense	228	217
Management fee paid to subsidiaries	242	186
Stock option expense	90	64
Professional and legal expenses	79	59
Other operating expenses	55	51
Total expenses	694	577
Equity in undistributed income of subsidiaries	16,252	14,144
Income before income taxes	15,565	13,575
Income tax benefit	140	113
Net income	15,705	13,688
Comprehensive income	$ 18,949	$ 12,366