FINANCIAL INFORMATION OF COLONY BANKCORP, INC. (PARENT ONLY) - Balance Sheets, Parent Company (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Other	$ 27,999	$ 24,420
Total assets	3,053,422	2,936,570
Liabilities
Other	15,252	11,953
Total liabilities	2,798,487	2,706,302
Stockholders’ equity
Common stock, par value $1.00; 50,000,000 shares authorized, 17,564,182 and 17,598,123 shares issued and outstanding as of December 31, 2023 and 2022, respectively	17,564	17,598
Paid-in capital	168,614	167,537
Retained earnings	124,400	111,573
Accumulated other comprehensive loss, net of tax	(55,643)	(66,440)
Total stockholders’ equity	254,935	230,268	$ 217,707
Total liabilities and stockholders’ equity	3,053,422	2,936,570
Parent Company
Assets
Cash	29,057	40,361
Investment in subsidiaries	283,968	249,868
Other	6,413	5,115
Total assets	319,438	295,344
Liabilities
Other	1,058	1,724
Subordinated notes	39,216	39,123
Subordinated debentures	24,229	24,229
Total liabilities	64,503	65,076
Stockholders’ equity
Common stock, par value $1.00; 50,000,000 shares authorized, 17,564,182 and 17,598,123 shares issued and outstanding as of December 31, 2023 and 2022, respectively	17,564	17,598
Paid-in capital	168,614	167,537
Retained earnings	124,400	111,573
Accumulated other comprehensive loss, net of tax	(55,643)	(66,440)
Total stockholders’ equity	254,935	230,268
Total liabilities and stockholders’ equity	$ 319,438	$ 295,344