Parent Company Condensed Financial Statements - Schedule of Condensed Financial Statements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents	$ 13,694	$ 19,114
Total assets	998,465	985,784
Subordinated debentures	21,651	21,651
Stockholders' equity	108,607	91,901	$ 87,622	$ 84,951
Total liabilities and stockholders' equity	998,465	985,784
Gain on sale of investment	(177)	20	498
Other non-interest income	1,144	2,595	1,126
Interest expense	(6,757)	(5,365)	(3,585)
Earnings before income taxes	12,115	11,594	3,472
Income tax benefit	1,453	1,168	(897)
Net earnings	10,662	10,426	4,369
Other comprehensive income (loss)	9,230	(3,579)	1,010
Total comprehensive income	19,892	6,847	5,379
Amortization of purchase accounting adjustment on subordinated debentures		167	200
Gain on sale of investment	177	(20)	(498)
Net cash provided by operating activities	9,283	21,383	3,056
Purchase of investment securities	53,197	82,742	75,186
Net cash (used in) provided by investing activities	(7,933)	(64,289)	(21,152)
Proceeds from exercise of stock options	36	534	228
Proceeds from other borrowings	2,302	1,737	1,126
Repayments on other borrowings			(100)
Payment of dividends	(3,508)	(3,325)	(3,108)
Net cash used in financing activities	(6,770)	45,436	14,684
Net increase (decrease) in cash	(5,420)	2,530	(3,412)
Cash and cash equivalents at beginning of year	19,114	16,584	19,996
Cash and cash equivalents at end of year	13,694	19,114	16,584
Parent Company [Member]
Cash and cash equivalents	173	100
Investment securities	239	237
Investment in subsidiaries	129,049	112,394
Other	929	942
Total assets	130,390	113,673
Subordinated debentures	21,651	21,651
Other	132	121
Stockholders' equity	108,607	91,901
Total liabilities and stockholders' equity	130,390	113,673
Dividends from Bank	4,500	3,200	3,700
Interest income	31	29	49
Gain on sale of investment			493
Other non-interest income	7	7	7
Interest expense	(970)	(1,078)	(898)
Other expense, net	(304)	(325)	(470)
Earnings before equity in undistributed earnings	3,264	1,833	2,881
Increase in undistributed equity of Bank	6,801	7,567	633
Increase in undistributed equity of Nonbank subsidiary	338	740	542
Earnings before income taxes	10,403	10,140	4,056
Income tax benefit	(259)	(286)	(313)
Net earnings	10,662	10,426	4,369
Other comprehensive income (loss)	9,230	(3,579)	1,010
Total comprehensive income	19,892	6,847	5,379
Increase in undistributed equity of subsidiaries	(7,139)	(8,307)	(1,175)
Amortization of purchase accounting adjustment on subordinated debentures		167	200
Gain on sale of investment			(493)
Other	23	381	(543)
Net cash provided by operating activities	3,546	2,667	2,358
Investment in subsidiary			(250)
Purchase of investment securities	(1)
Proceeds from sales of investments		7	967
Net cash (used in) provided by investing activities	(1)	7	717
Proceeds from exercise of stock options	36	534	228
Proceeds from other borrowings			100
Repayments on other borrowings			(100)
Payment of dividends	(3,508)	(3,325)	(3,108)
Net cash used in financing activities	(3,472)	(2,791)	(2,880)
Net increase (decrease) in cash	73	(117)	195
Cash and cash equivalents at beginning of year	100	217	22
Cash and cash equivalents at end of year	$ 173	$ 100	$ 217