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PARENT COMPANY FINANCIAL INFORMATION (Condensed Statement of Cash Flows) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |  |
Net income | $ 11,775 | $ 10,783 | $ 10,811 | $ 6,097 | $ 7,863 | $ 7,683 | $ 6,057 | $ 8,531 | $ 39,466 | $ 30,134
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |  |  |  |  |  |  |
Stock based compensation expense |  |  |  |  |  |  |  |  | 3,312 | 3,067
Net cash used in operating activities |  |  |  |  |  |  |  |  | 87,270 | 38,956
Cash Flows From Financing Activities: |  |  |  |  |  |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  | (489,035) | (1,014,789)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |
Redemption of common stock for tax withholdings for restricted stock vesting |  |  |  |  |  |  |  |  | (881) | (89)
Net cash provided by financing activities |  |  |  |  |  |  |  |  | 876,850 | 1,132,103
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 475,085 | 156,270
Cash and cash equivalents at the beginning of the period |  |  |  | 389,220 |  |  |  |  | 389,220 |
Cash and cash equivalents at the end of the period | 864,305 |  |  |  | 389,220 |  |  |  | 864,305 | 389,220
Parent Company |  |  |  |  |  |  |  |  |  |
Cash Flows From Operating Activities: |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 39,466 | 30,134
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |  |  |  |  |  |  |  |  |
Undistributed earnings of subsidiary bank |  |  |  |  |  |  |  |  | (42,844) | (35,209)
Non-employee stock based compensation |  |  |  |  |  |  |  |  | 410 | 400
Amortization of trust preferred issuance costs |  |  |  |  |  |  |  |  | 56 | 56
Stock based compensation expense |  |  |  |  |  |  |  |  | 2,902 | 2,667
Decrease (increase) in other assets |  |  |  |  |  |  |  |  | (1,084) | 274
Increase (decrease) in other liabilities |  |  |  |  |  |  |  |  | 154 | 56
Net cash used in operating activities |  |  |  |  |  |  |  |  | (940) | (1,622)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |
Redemption of common stock for tax withholdings for restricted stock vesting |  |  |  |  |  |  |  |  | (881) | (89)
Net cash provided by financing activities |  |  |  |  |  |  |  |  | (881) | (89)
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (1,821) | (1,711)
Cash and cash equivalents at the beginning of the period |  |  |  | $ 1,836 |  |  |  | $ 3,547 | 1,836 | 3,547
Cash and cash equivalents at the end of the period | $ 15 |  |  |  | $ 1,836 |  |  |  | $ 15 | $ 1,836

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