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Parent Company Financial Information (Details) - Schedule of condensed financial information of Southern First Bancshares, Inc. (parent company only) - Parent Company [Member] $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Assets |  |  |
Cash and cash equivalents | $ 13,882 | $ 12,379 |
Investment in subsidiaries | 317,102 | 301,880 |
Other assets | 21 | 21 |
Total assets | 331,005 | 314,280 |
Liabilities and Shareholders’ Equity |  |  |
Accounts payable and accrued expenses | 279 | 274 |
Subordinated debentures | 36,214 | 36,105 |
Shareholders’ equity | 294,512 | 277,901 |
Total liabilities and shareholders’ equity | 331,005 | 314,280 |
Revenues |  |  |
Interest income | 20 | 17 | $ 17
Total revenue | 20 | 17 | 17
Expenses |  |  |
Interest expense | 1,730 | 1,523 | 1,708
Other expenses | 240 | 285 | 283
Total expenses | 1,970 | 1,808 | 1,991
Income tax benefit | 409 | 376 | 415
Loss before equity in undistributed net income of subsidiaries | (1,541) | (1,415) | (1,559)
Equity in undistributed net income of subsidiaries | 30,656 | 48,126 | 19,887
Net income | 29,115 | 46,711 | 18,328
Operating activities |  |  |
Net income | 29,115 | 46,711 | 18,328
Adjustments to reconcile net income to cash provided by (used for) operating activities |  |  |
Equity in undistributed net income of subsidiaries | (30,656) | (48,126) | (19,887)
Compensation expense related to stock options and restricted stock grants | 2,026 | 1,647 | 1,397
(Increase) decrease in other assets |  | 8 | (23)
Increase (decrease) in accounts payable and accrued expenses | 113 | 108 | 63
Net cash provided by (used for) operating activities | 598 | 348 | (122)
Investing activities |  |  |
Investment in subsidiaries, net |  |  |
Net cash used for investing activities |  |  |
Financing activities |  |  |
Issuance of common stock |  |  |
Proceeds from the exercise of stock options and warrants | 905 | 3,012 | 1,388
Net cash provided by financing activities | 905 | 3,012 | 1,388
Net increase in cash and cash equivalents | 1,503 | 3,360 | 1,266
Cash and cash equivalents, beginning of year | 12,379 | 9,019 | 7,753
Cash and cash equivalents, end of year | $ 13,882 | $ 12,379 | $ 9,019

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