Employee Benefits and Retirement Plans (Details Narrative) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Increase decrease in accrued pension liability	$ 110,306	$ 1,032,035
Changes to other comprehensive income (loss) on pre-tax basis	(72,802)	(681,143)
Decreased in fair value of plan assets	$ 846,125
Targeted investment portfolio allocated	33.00%
Targeted investment portfolio is allocated, fixed-income investments, minimum	50.00%
Targeted investment portfolio is allocated, fixed-income investments, maximum	90.00%
Investments	$ 300,000,000
Expected contribute from employer	550,000	500,000	$ 606,000
Estimated amortization amounts, net loss	521,477
Expense incurred	$ 472,947	$ 927,935	308,124
Stock options exercise period		10 years
Common stock authorized for issuance	196,680
Southwest Georgia Bank 401(K) Plan [Member]
Employee contributions	$ 186,253	$ 188,338	202,233
Employee Stock Ownership Plan [Member]
Expected contribute from employer	$ 400,000	294,642	321,000
ESOP holds Corporation's outstanding common stock	262,104
Number of shares are allocated to participants	249,991
Unreleased shares are pledged as collateral	12,113
Long-term debt incurred from repurchasing participants' shares	$ 185,000
Directors and Executive Officers Stock Purchase Plan [Member]
Employee contributions	900
Expense incurred	$ 290,573	$ 282,600	$ 287,150
Dividend Reinvestment And Share Purchase Plan [Member]
Reinvestment of common stock dividends, voluntary cash payments description	not less than $5 nor more than $5,000 per month
Shares issued through the plan	6,955	6,702	6,503
Shares issued at an average price per share	$ 15.92	$ 14.73	$ 13.70
2013 Omnibus Incentive Plan [Member]
Common stock authorized for issuance	125,000
Equity Securities [Member]
Targeted investment portfolio allocated	20.00%