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Parent Company Statements of Income (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 | Dec. 31, 2018
Interest and Dividend Income, Operating | $ 91,800 | $ 89,566 | $ 87,445 | $ 88,909 | $ 91,829 | $ 94,589 | $ 92,226 | $ 81,856 | $ 357,720 | $ 360,500 | $ 310,801
Interest Expense | 5,479 | 5,726 | 6,259 | 12,626 | 14,820 | 17,488 | 16,375 | 14,080 | 30,090 | 62,763 | 43,903
Income taxes |  |  |  |  |  |  |  |  | 26,722 | 22,071 | 20,912
Net Income (Loss) Attributable to Parent | $ 45,200 | $ 30,846 | $ 29,505 | $ 22,372 | $ 23,936 | $ 31,146 | $ 22,163 | $ 25,455 | 127,923 | 102,700 | 110,387
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | 15,160 | 40,199 | (18,533)
Parent Company |  |  |  |  |  |  |  |  |  |  |
Dividends From Subsidiaries |  |  |  |  |  |  |  |  | 97,000 | 97,500 | 100,000
Interest and Dividend Income, Operating |  |  |  |  |  |  |  |  | 1,250 | 1,250 | 1,275
Other Income |  |  |  |  |  |  |  |  | 98 | 4,634 | 6,068
Revenues |  |  |  |  |  |  |  |  | 98,348 | 103,384 | 107,343
Interest Expense |  |  |  |  |  |  |  |  | 4,311 | 1,950 | 617
Other Expenses |  |  |  |  |  |  |  |  | 12,234 | 19,804 | 14,619
Operating Expenses |  |  |  |  |  |  |  |  | 16,545 | 21,754 | 15,236
Income Before Taxes And Equity In Undistributed Losses Of Subsidiaries |  |  |  |  |  |  |  |  | 81,803 | 81,630 | 92,107
Income taxes |  |  |  |  |  |  |  |  | (4,390) | (4,242) | (4,010)
Income Before Equity In Undistributed Losses Of Subsidiaries |  |  |  |  |  |  |  |  | 86,193 | 85,872 | 96,117
Equity In Undistributed Losses Of Subsidiaries |  |  |  |  |  |  |  |  | (41,730) | (16,828) | (14,270)
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 127,923 | 102,700 | 110,387
Other Comprehensive Income (Loss), Net of Tax |  |  |  |  |  |  |  |  | 15,160 | 40,199 | (18,533)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent |  |  |  |  |  |  |  |  | $ 143,083 | $ 142,899 | $ 91,854

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