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Note 23 - Financial Information of Colony Bankcorp, Inc. (Parent Only) Statements of Operations, Parent Company (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
| $ 49,022,146 | $ 45,916,423 | $ 44,589,089
Salaries and Employee Benefits | 20,122,843 | 19,222,594 | 18,482,693
Income Before Taxes and Equity in Undistributed Earnings of Subsidiary | 14,917,670 | 14,528,431 | 12,524,543
Income Tax Benefits | (3,000,270) | (6,777,453) | (3,851,333)
Net Income | 11,917,400 | 7,750,978 | 8,673,210
Preferred Stock Dividends |  | 210,600 | 1,493,310
Net Income Available to Common Stockholders | 11,917,400 | 7,540,378 | 7,179,900
Parent Company [Member] |  |  |
Dividends from Subsidiaries | 8,329,127 | 8,746,882 | 9,118,104
| 9,036,175 | 9,445,065 | 9,822,796
Interest | 971,847 | 900,113 | 601,567
Salaries and Employee Benefits | 1,083,960 | 917,259 | 840,130
Other | 691,037 | 604,166 | 554,434
| 2,746,844 | 2,421,538 | 1,996,131
Income Before Taxes and Equity in Undistributed Earnings of Subsidiary | 6,289,331 | 7,023,527 | 7,826,665
Income Tax Benefits | 422,210 | 568,258 | 457,934
Income Before Equity in Undistributed Earnings of Subsidiary | 6,711,541 | 7,591,785 | 8,284,599
Equity in Undistributed Earnings of Subsidiary | 5,205,859 | 159,193 | 388,611
Net Income | 11,917,400 | 7,750,978 | 8,673,210
Preferred Stock Dividends |  | 210,600 | 1,493,310
Net Income Available to Common Stockholders | 11,917,400 | 7,540,378 | 7,179,900
Parent Company [Member] | Management Service [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | 601,080 | 601,080 | 601,080
Parent Company [Member] | Financial Service, Other [Member] |  |  |
Revenue from Contract with Customer, Including Assessed Tax | $ 105,968 | $ 97,103 | $ 103,612

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