Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($)	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
Net Interest Income (expense) external customers									$ 20,582,634	$ 18,571,758	$ 17,244,000
Net intersegment interest income (expense)
Net Interest Income	$ 5,559,000	$ 5,205,000	$ 5,052,000	$ 4,766,000	$ 4,784,000	$ 4,773,000	$ 4,567,000	$ 4,448,000	20,582,634	18,571,758	17,244,149
Provision for Loan Losses	112,000	379,000	250,000	116,000	226,000	249,000	140,000	215,000	856,676	829,500	300,000
Noninterest Income (expense) external customers									4,817,000	4,207,000	4,312,000
Intersegment noninterest income (expense)
Total Noninterest Income	1,081,000	1,192,000	1,307,000	1,237,000	1,175,000	978,000	1,060,000	994,000	4,816,567	4,206,731	4,312,522
Depreciation									1,200,032	1,036,986	881,000
Amortization of intangibles									3,907	15,625	15,625
Other Noninterest expenses									3,726,498	3,319,751	3,074,843
Total Noninterest expenses	4,918,000	4,221,000	4,550,000	4,416,000	4,357,000	4,149,000	4,132,000	3,996,000	18,105,699	16,633,454	15,829,279
Pre-tax Income									6,437	5,315,000	5,427,000
Provision for Income Taxes	278,000	365,000	261,000	243,000	253,000	209,000	207,000	(1,000)	1,146,586	668,416	1,619,900
Net Income	1,332,000	$ 1,432,000	$ 1,298,000	$ 1,228,000	1,123,000	$ 1,144,000	$ 1,148,000	$ 1,232,000	5,290,240	4,647,119	3,807,492
Assets	555,136,268				534,833,167				555,136,268	534,833,167	489,072,375
Expenditures for Fixed Assets									617,000	3,388,000	1,955,000
Retail and Commercial Banking [Member]
Net Interest Income (expense) external customers									18,365,000	16,334,000	15,119,000
Net intersegment interest income (expense)									1,885,000	1,818,000	1,817,000
Net Interest Income									20,250,000	18,152,000	16,936,000
Provision for Loan Losses									857,000	830,000	300,000
Noninterest Income (expense) external customers									1,832,000	1,765,000	2,099,000
Intersegment noninterest income (expense)									(26,000)	(20,000)	(16,000)
Total Noninterest Income									1,806,000	1,745,000	2,083,000
Depreciation									1,048,000	845,000	685,000
Amortization of intangibles
Other Noninterest expenses									11,607,000	10,974,000	10,328,000
Total Noninterest expenses									12,655,000	11,819,000	11,013,000
Pre-tax Income									8,544,000	7,248,000	7,706,000
Provision for Income Taxes									1,545,000	1,184,000	1,784,000
Net Income									6,999,000	6,064,000	5,922,000
Assets	643,471,000				628,222,000				643,471,000	628,222,000	567,723,000
Expenditures for Fixed Assets									578,000	3,321,000	1,888,000
Insurance Services [Member]
Net Interest Income (expense) external customers
Net intersegment interest income (expense)									27,000	20,000	16,000
Net Interest Income									27,000	20,000	16,000
Provision for Loan Losses
Noninterest Income (expense) external customers									1,715,000	1,604,000	1,525,000
Intersegment noninterest income (expense)									26,000	20,000	16,000
Total Noninterest Income									1,741,000	1,624,000	1,541,000
Depreciation									36,000	37,000	33,000
Amortization of intangibles									4,000	16,000	16,000
Other Noninterest expenses									1,286,000	1,158,000	1,119,000
Total Noninterest expenses									1,326,000	1,211,000	1,168,000
Pre-tax Income									442,000	433,000	389,000
Provision for Income Taxes									81,000	68,000	86,000
Net Income									361,000	365,000	303,000
Assets	2,327,000				1,971,000				2,327,000	1,971,000	1,687,000
Expenditures for Fixed Assets									6,000	2,000	48,000
Wealth Strategies [Member]
Net Interest Income (expense) external customers									(11,000)
Net intersegment interest income (expense)									(1,000)	(7,000)	(6,000)
Net Interest Income									(12,000)	(7,000)	(6,000)
Provision for Loan Losses
Noninterest Income (expense) external customers									581,000	665,000	612,000
Intersegment noninterest income (expense)									30,000	31,000	32,000
Total Noninterest Income									714,000	696,000	644,000
Depreciation									20,000	18,000	24,000
Amortization of intangibles
Other Noninterest expenses									635,000	624,000	592,000
Total Noninterest expenses									655,000	642,000	616,000
Pre-tax Income									(56,000)	47,000	22,000
Provision for Income Taxes									(11,000)	3,000	(2,000)
Net Income									(45,000)	44,000	24,000
Assets	205,000				267,000				205,000	267,000	177,000
Expenditures for Fixed Assets									17,000	8,000	2,000
Financial Management [Member]
Net Interest Income (expense) external customers									2,170,000	2,193,000	2,099,000
Net intersegment interest income (expense)									(1,932,000)	(1,831,000)	(1,827,000)
Net Interest Income									238,000	362,000	272,000
Provision for Loan Losses
Noninterest Income (expense) external customers									421,000	259,000	75,000
Intersegment noninterest income (expense)
Total Noninterest Income									421,000	259,000	75,000
Depreciation									59,000	56,000	56,000
Amortization of intangibles
Other Noninterest expenses									800,000	752,000	780,000
Total Noninterest expenses									859,000	808,000	836,000
Pre-tax Income									(200,000)	(187,000)	(489,000)
Provision for Income Taxes									(47,000)	(210,000)	306,000
Net Income									(153,000)	23,000	(795,000)
Assets	169,895,000				132,033,000				169,895,000	132,033,000	138,598,000
Expenditures for Fixed Assets									16,000	57,000	17,000
Inter-segment Elimination [Member]
Net Interest Income (expense) external customers
Net intersegment interest income (expense)									(17,000)
Net Interest Income									(17,000)
Provision for Loan Losses
Noninterest Income (expense) external customers
Intersegment noninterest income (expense)									(30,000)	(31,000)	(32,000)
Total Noninterest Income									(30,000)	(31,000)	(32,000)
Depreciation
Amortization of intangibles
Other Noninterest expenses
Total Noninterest expenses
Pre-tax Income									(47,000)	(31,000)	(32,000)
Provision for Income Taxes
Net Income									(47,000)	(31,000)	(32,000)
Assets	(261,868,000)				(229,108,000)				(261,868,000)	(229,108,000)	(219,840,000)
Expenditures for Fixed Assets
Other [Member]
Net Interest Income (expense) external customers									59,000	45,000	26,000
Net intersegment interest income (expense)									38,000
Net Interest Income									97,000	45,000	26,000
Provision for Loan Losses
Noninterest Income (expense) external customers									268,000	(86,000)	1,000
Intersegment noninterest income (expense)
Total Noninterest Income									268,000	(86,000)	1,000
Depreciation									37,000	81,000	83,000
Amortization of intangibles
Other Noninterest expenses									2,574,000	2,073,000	2,113,000
Total Noninterest expenses									2,611,000	2,154,000	2,196,000
Pre-tax Income									(2,246,000)	(2,195,000)	(2,169,000)
Provision for Income Taxes									(421,000)	(377,000)	(554,000)
Net Income									(1,825,000)	(1,818,000)	(1,615,000)
Assets	$ 1,106,000				$ 1,448,000				1,106,000	1,448,000	727,000
Expenditures for Fixed Assets