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Parent Corporation Only Financial Statements (Details) - Condensed Statements of Income - 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 | Dec. 31, 2018
Income: |  |  |  |  |  |  |  |  |  |  |
Dividend income from subsidiaries |  |  |  |  |  |  |  |  | $ 1,642 | $ 1,778 | $ 2,012
Net Income | $ 25,641 | $ 24,786 | $ 14,832 | $ 6,030 | $ 20,783 | $ 21,696 | $ 19,281 | $ 11,635 | 71,289 | 73,395 | 60,352
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Income: |  |  |  |  |  |  |  |  |  |  |
Dividend income from subsidiaries |  |  |  |  |  |  |  |  | 15,200 | 30,050 | 16,700
Other income |  |  |  |  |  |  |  |  | 1,683 | 1,652 | 1,618
Total Income |  |  |  |  |  |  |  |  | 16,883 | 31,702 | 18,318
Expenses |  |  |  |  |  |  |  |  | (9,263) | (7,386) | (7,201)
Income before equity in undistributed earnings of subsidiaries |  |  |  |  |  |  |  |  | 7,620 | 24,316 | 11,117
Equity in undistributed earnings of subsidiaries |  |  |  |  |  |  |  |  | 63,669 | 49,079 | 49,235
Net Income |  |  |  |  |  |  |  |  | $ 71,289 | $ 73,395 | $ 60,352

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