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Loans and Allowance for Loan Losses - ALL Roll Forward (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 7,074,000	$ 5,498,000	$ 5,860,291	$ 5,105,000	$ 5,105,000
Loans charged off	(258,000)	(188,000)	(500,000)		(276,000)
Recoveries of loans charged off	36,000	53,000	189,000		248,000
Provision (reallocation) charged to expense	304,000	30,000	1,607,074	340,482	783,000
Ending balance	7,156,025	5,393,000	7,156,025	5,393,000	5,860,291
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,135,000	2,489,000	2,465,000	2,369,000	2,369,000
Loans charged off	0	0	(38,000)		0
Recoveries of loans charged off	0	2,000	0		8,000
Provision (reallocation) charged to expense	110,000	52,000	818,000		88,000
Ending balance	3,245,000	2,543,000	3,245,000	2,543,000	2,465,000
Consumer Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,528,000	1,653,000	1,596,000	1,382,000	1,382,000
Loans charged off	(2,000)	(104,000)	(27,000)		(111,000)
Recoveries of loans charged off	5,000	11,000	55,000		99,000
Provision (reallocation) charged to expense	67,000	(145,000)	(26,000)		226,000
Ending balance	1,598,000	1,415,000	1,598,000	1,415,000	1,596,000
Construction and Land Development [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	744,000	609,000	521,000	717,000	717,000
Loans charged off	0	0	0		0
Recoveries of loans charged off	0	2,000	7,000		13,000
Provision (reallocation) charged to expense	(35,000)	(46,000)	181,000		(209,000)
Ending balance	709,000	565,000	709,000	565,000	521,000
Commercial and Industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,367,000	644,000	1,062,000	520,000	520,000
Loans charged off	(100,000)	(18,000)	(178,000)		(24,000)
Recoveries of loans charged off	9,000	23,000	65,000		67,000
Provision (reallocation) charged to expense	86,000	96,000	413,000		499,000
Ending balance	1,362,000	745,000	1,362,000	745,000	1,062,000
Consumer and Other [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	300,000	103,000	216,000	117,000	117,000
Loans charged off	(156,000)	(66,000)	(257,000)		(141,000)
Recoveries of loans charged off	22,000	15,000	62,000		61,000
Provision (reallocation) charged to expense	76,000	73,000	221,000		179,000
Ending balance	$ 242,000	$ 125,000	$ 242,000	$ 125,000	$ 216,000

X

- Definition

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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-Publisher FASB
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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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