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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Loan Portfolio by Type of Loan (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | --- | --- | ---
Loans held for investment: |  |  |  |
Total loans | $ 1,958,634 | $ 1,706,395 |  |
Deferred loan (fees) costs, net | (3,643) | 601 |  |
Allowance for credit losses | (33,757) | (16,202) | $ (16,394) | $ (14,651)
Total net loans | 1,921,234 | 1,690,794 |  |
Commercial and industrial |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 531,152 | 279,583 |  |
Allowance for credit losses | (4,018) | (2,056) | (2,057) | (1,751)
Construction and development |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 269,101 | 280,498 |  |
Allowance for credit losses | (4,929) | (2,378) | (2,135) | (1,920)
Commercial real estate |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 602,664 | 567,360 |  |
Allowance for credit losses | (15,695) | (6,853) | (6,889) | (6,025)
Farmland |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 80,197 | 57,476 |  |
Allowance for credit losses | (1,290) | (570) | (594) | (643)
1-4 family residential |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 385,783 | 412,166 |  |
Allowance for credit losses | (6,185) | (3,125) | (3,077) | (2,868)
Multi-family residential |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 19,499 | 37,379 |  |
Allowance for credit losses | (325) | (409) | (830) | (631)
Consumer |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 52,855 | 53,245 |  |
Allowance for credit losses | (975) | (602) | (600) | (565)
Agricultural |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 17,004 | 18,359 |  |
Allowance for credit losses | (331) | (197) | (201) | (238)
Overdrafts |  |  |  |
Loans held for investment: |  |  |  |
Total loans | 379 | 329 |  |
Allowance for credit losses | $ (9) | $ (12) | $ (11) | $ (10)

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