Parent Company Financial Information - Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
INCOME
Other Income									$ 1,153	$ 499	$ 341
Total Interest Income	$ 27,419	$ 26,572	$ 25,520	$ 24,267	$ 23,988	$ 22,136	$ 20,392	$ 18,710	103,778	85,226	66,346
EXPENSE
Total Interest Expense	7,491	7,637	7,382	7,136	6,546	5,502	4,493	3,947	29,646	20,488	12,173
LOSS BEFORE INCOME TAX BENEFIT AND EQUITY IN UNDISTRIBUTED EARNINGS	9,951	9,897	9,198	9,280	6,459	8,647	9,020	8,018	38,326	32,144	27,038
Income Tax Benefit	(1,380)	(2,092)	(1,189)	(2,262)	1,302	(2,184)	(2,274)	(2,068)	(6,923)	(5,224)	(10,149)
NET INCOME	$ 8,571	$ 7,805	$ 8,009	$ 7,018	$ 7,761	$ 6,463	$ 6,746	$ 5,950	31,403	26,920	16,889
Parent Company | Reportable Legal Entities
INCOME
Dividend Income									1,040	1,100
Interest Income									27	3	9
Other Income									158	136	145
Total Interest Income									1,225	1,239	154
EXPENSE
Interest Expense									2,056	2,162	1,405
Other Expenses									996	1,152	555
Total Interest Expense									3,052	3,314	1,960
LOSS BEFORE INCOME TAX BENEFIT AND EQUITY IN UNDISTRIBUTED EARNINGS									(1,827)	(2,075)	(1,806)
Income Tax Benefit									776	924	713
LOSS BEFORE EQUITY IN UNDISTRIBUTED EARNINGS									(1,051)	(1,151)	(1,093)
Equity in Undistributed Earnings									32,454	28,071	17,982
NET INCOME									$ 31,403	$ 26,920	$ 16,889