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BUSINESS COMBINATIONS - Covenant Financial (Details) - USD ($) | Jul. 01, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018
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BUSINESS COMBINATIONS |  |  |  |  |  |  |
Goodwill |  | $ 52,526,000 | $ 28,388,000 | $ 28,388,000 | $ 28,618,000 | $ 28,618,000 | $ 11,942,000
Covenant Financial Inc. |  |  |  |  |  |  |
BUSINESS COMBINATIONS |  |  |  |  |  |  |
Total purchase consideration | $ 63,266,000 |  |  |  |  |  |
Cash paid | $ 21,654,000 |  |  |  |  |  |
Shares of common stock issued | 2,047,819 |  |  |  |  |  |
Value of common stock issued | $ 41,612,000 |  |  |  |  |  |
Stock issuance cost | 183,000 |  |  |  |  |  |
Fair value of assets acquired | 608,631,000 |  |  |  |  |  |
Fair value of liabilities assumed | 569,503,000 |  |  |  |  |  |
Goodwill | $ 24,138,000 |  |  |  |  |  |
Refinement term of assets and liabilities | 1 year |  |  |  |  |  |

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