Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 15,512,000	$ 13,992,000	$ 8,189,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	1,500,000	1,000,000	600,000
Change in deferred loan origination costs/fees, net	(684,000)	(1,581,000)	(754,000)
Stock-based compensation expense	224,000	199,000	152,000
Depreciation and amortization	1,391,000	1,042,000	1,026,000
Amortization of investment security premiums	802,000	691,000	615,000
(Gain) loss on sale of investment securities	(114,000)	8,000	158,000
Gain on equity securities with no readily determinable fair value		(209,000)
Gain on sale of loans held for sale	(867,000)	(1,903,000)	(2,039,000)
Loans originated for sale	(20,416,000)	(38,914,000)	(31,348,000)
Proceeds from loan sales	19,457,000	41,748,000	36,583,000
Provision from change in OREO valuation	40,000	155,000	124,000
Net gain on sale of OREO	(275,000)	(47,000)	(130,000)
Net gain on sale of other vehicles owned	(5,000)	(24,000)	(10,000)
Earnings on bank owned life insurance policies	(328,000)	(328,000)	(338,000)
(Benefit) provision for deferred income taxes	(166,000)	360,000	503,000
Increase in accrued interest receivable and other assets	(100,000)	(1,397,000)	(513,000)
(Decrease) increase in accrued interest payable and other liabilities	(494,000)	847,000	(1,340,000)
Net cash provided by operating activities	15,477,000	15,639,000	11,478,000
Cash flows from investing activities:
Proceeds from matured and called available-for-sale investment securities	200,000
Proceeds from sale of available-for-sale securities	19,668,000	4,157,000	9,594,000
Purchases of available-for-sale investment securities	(27,801,000)	(56,265,000)	(58,094,000)
Proceeds from principal repayments from available-for-sale government-guaranteed mortgage-backed securities	25,257,000	15,324,000	12,702,000
Net increase in loans	(53,477,000)	(82,412,000)	(30,962,000)
Proceeds from bank owned life insurance		338,000
Proceeds from sale of vehicles	636,000	473,000	313,000
Proceeds from sale of other real estate	698,000	723,000	689,000
Purchases of FHLB stock	(490,000)	(342,000)	(247,000)
Purchases of premises and equipment	(1,397,000)	(3,866,000)	(531,000)
Net cash used in investing activities	(36,706,000)	(121,870,000)	(66,536,000)
Cash flows from financing activities:
Net increase in demand, interest-bearing and savings deposits	39,531,000	52,982,000	83,866,000
Net (decrease) increase in time deposits	(18,772,000)	10,926,000	(3,562,000)
Net increase in securities sold under agreements to repurchase	2,955,000	2,984,000	3,157,000
Cash dividends paid on common stock	(2,373,000)	(1,842,000)	(1,398,000)
Principal payment on note payable			(2,375,000)
Proceeds from exercise of stock options	144,000	330,000	261,000
Net cash provided by financing activities	21,485,000	65,380,000	79,949,000
Increase (decrease) in cash and cash equivalents	256,000	(40,851,000)	24,891,000
Cash and cash equivalents at beginning of year	46,686,000	87,537,000	62,646,000
Cash and cash equivalents at end of year	46,942,000	46,686,000	87,537,000
Supplemental disclosure of cash flow information:
Interest expense	1,739,000	1,212,000	1,012,000
Income taxes	6,019,000	4,506,000	7,175,000
Non-Cash Investing Activities:
Real estate acquired through foreclosure		656,000	1,293,000
Vehicles acquired through repossession	635,000	466,000	325,000
Loans provided for sales of real estate owned			480,000
Non-Cash Financing Activities:
Common stock retired in connection with the exercise of stock options	42,000	29,000	10,000
Common stock issued in connection with the cashless exercise of stock warrant			$ 787,000