Segment Reporting - Schedule of Segment Reporting Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net Interest Income (expense) external customers									$ 18,571,758	$ 17,244,000	$ 15,801,000
Net intersegment interest income (expense)									0	0	0
Net Interest Income	$ 4,784,000	$ 4,773,000	$ 4,567,000	$ 4,448,000	$ 4,459,000	$ 4,387,000	$ 4,332,000	$ 4,066,000	18,571,758	17,244,149	15,801,015
Provision for Loan Losses	226,000	249,000	140,000	215,000	75,000	75,000	75,000	75,000	829,500	300,000	160,000
Noninterest Income (expense) external customers									4,206,731	4,312,000	4,459,000
Intersegment noninterest income (expense)									0	0	0
Total Noninterest Income	1,175,000	978,000	1,060,000	994,000	960,000	969,000	1,100,000	1,283,000	4,206,731	4,312,522	4,459,259
Depreciation									1,036,986	881,000	923,578
Amortization of intangibles									15,625	15,625	15,625
Other Noninterest expenses									3,319,751	3,074,843	2,763,227
Total Noninterest expenses	4,357,000	4,149,000	4,132,000	3,996,000	3,892,000	4,068,000	3,968,000	3,901,000	16,633,454	15,829,279	14,913,821
Pre-tax Income									5,315	5,427,000	5,186,000
Provision for Income Taxes	253,000	209,000	207,000	(1,000)	735,000	261,000	316,000	308,000	668,416	1,619,900	1,152,476
Net Income	1,123,000	$ 1,144,000	$ 1,148,000	$ 1,232,000	717,000	$ 952,000	$ 1,073,000	$ 1,065,000	4,647,119	3,807,492	4,033,977
Assets	534,833,167				489,072,375				534,833,167	489,072,375	448,501,230
Expenditures for Fixed Assets									3,388,000	1,955,000	1,455,000
Retail and Commercial Banking [Member]
Net Interest Income (expense) external customers									16,334,000	15,119,000	13,837,000
Net intersegment interest income (expense)									1,818,000	1,817,000	1,671,000
Net Interest Income									18,152,000	16,936,000	15,508,000
Provision for Loan Losses									830,000	300,000	160,000
Noninterest Income (expense) external customers									1,765,000	2,099,000	2,316,000
Intersegment noninterest income (expense)									(20,000)	(16,000)	(11,000)
Total Noninterest Income									1,745,000	2,083,000	2,305,000
Depreciation									845,000	685,000	738,000
Amortization of intangibles									0	0	0
Other Noninterest expenses									10,974,000	10,328,000	9,260,000
Total Noninterest expenses									11,819,000	11,013,000	9,998,000
Pre-tax Income									7,248,000	7,706,000	7,655,000
Provision for Income Taxes									1,184,000	1,784,000	1,794,000
Net Income									6,064,000	5,922,000	5,861,000
Assets	628,222,000				567,723,000				628,222,000	567,723,000	507,538,000
Expenditures for Fixed Assets									3,321,000	1,888,000	1,409,000
Insurance Services [Member]
Net Interest Income (expense) external customers									0	0	0
Net intersegment interest income (expense)									20,000	16,000	11,000
Net Interest Income									20,000	16,000	11,000
Provision for Loan Losses									0	0	0
Noninterest Income (expense) external customers									1,604,000	1,525,000	1,477,000
Intersegment noninterest income (expense)									20,000	16,000	11,000
Total Noninterest Income									1,624,000	1,541,000	1,488,000
Depreciation									37,000	33,000	30,000
Amortization of intangibles									16,000	16,000	16,000
Other Noninterest expenses									1,158,000	1,119,000	1,184,000
Total Noninterest expenses									1,211,000	1,168,000	1,230,000
Pre-tax Income									433,000	389,000	269,000
Provision for Income Taxes									68,000	86,000	61,000
Net Income									365,000	303,000	208,000
Assets	1,971,000				1,687,000				1,971,000	1,687,000	1,414,000
Expenditures for Fixed Assets									2,000	48,000	15,000
Wealth Strategies [Member]
Net Interest Income (expense) external customers									0	0	0
Net intersegment interest income (expense)									(7,000)	(6,000)	(6,000)
Net Interest Income									(7,000)	(6,000)	(6,000)
Provision for Loan Losses									0	0	0
Noninterest Income (expense) external customers									665,000	612,000	584,000
Intersegment noninterest income (expense)									31,000	32,000	32,000
Total Noninterest Income									696,000	644,000	616,000
Depreciation									18,000	24,000	23,000
Amortization of intangibles									0	0	0
Other Noninterest expenses									624,000	592,000	585,000
Total Noninterest expenses									642,000	616,000	608,000
Pre-tax Income									47,000	22,000	2,000
Provision for Income Taxes									3,000	(2,000)	(7,000)
Net Income									44,000	24,000	9,000
Assets	267,000				177,000				267,000	177,000	199,000
Expenditures for Fixed Assets									8,000	2,000	11,000
Financial Management [Member]
Net Interest Income (expense) external customers									2,193,000	2,099,000	1,940,000
Net intersegment interest income (expense)									(1,831,000)	(1,827,000)	(1,676,000)
Net Interest Income									362,000	272,000	264,000
Provision for Loan Losses									0	0	0
Noninterest Income (expense) external customers									259,000	75,000	80,000
Intersegment noninterest income (expense)									0	0	0
Total Noninterest Income									259,000	75,000	80,000
Depreciation									56,000	56,000	57,000
Amortization of intangibles									0	0	0
Other Noninterest expenses									752,000	780,000	737,000
Total Noninterest expenses									808,000	836,000	794,000
Pre-tax Income									(187,000)	(489,000)	(450,000)
Provision for Income Taxes									(210,000)	306,000	(107,000)
Net Income									23,000	(795,000)	(343,000)
Assets	132,033,000				138,598,000				132,033,000	138,598,000	148,099,000
Expenditures for Fixed Assets									57,000	17,000	20,000
Inter-segment Elimination [Member]
Net Interest Income (expense) external customers									0	0	0
Net intersegment interest income (expense)									0	0	0
Net Interest Income									0	0	0
Provision for Loan Losses									0	0	0
Noninterest Income (expense) external customers									0	0	0
Intersegment noninterest income (expense)									(31,000)	(32,000)	(32,000)
Total Noninterest Income									(31,000)	(32,000)	(32,000)
Depreciation									0	0	0
Amortization of intangibles									0	0	0
Other Noninterest expenses									0	0	0
Total Noninterest expenses									0	0	0
Pre-tax Income									(31,000)	(32,000)	(32,000)
Provision for Income Taxes									0	0	0
Net Income									(31,000)	(32,000)	(32,000)
Assets	(229,108,000)				(219,840,000)				(229,108,000)	(219,840,000)	(209,619,000)
Expenditures for Fixed Assets									0	0	0
Other [Member]
Net Interest Income (expense) external customers									45,000	26,000	24,000
Net intersegment interest income (expense)									0	0	0
Net Interest Income									45,000	26,000	24,000
Provision for Loan Losses									0	0	0
Noninterest Income (expense) external customers									(86,000)	1,000	2,000
Intersegment noninterest income (expense)									0	0	0
Total Noninterest Income									(86,000)	1,000	2,000
Depreciation									81,000	83,000	76,000
Amortization of intangibles									0	0	0
Other Noninterest expenses									2,073,000	2,113,000	2,208,000
Total Noninterest expenses									2,154,000	2,196,000	2,284,000
Pre-tax Income									(2,195,000)	(2,169,000)	(2,258,000)
Provision for Income Taxes									(377,000)	(554,000)	(589,000)
Net Income									(1,818,000)	(1,615,000)	(1,669,000)
Assets	$ 1,448,000				$ 727,000				1,448,000	727,000	870,000
Expenditures for Fixed Assets									$ 0	$ 0	$ 0