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Parent Company Financial Information (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Gain on sale of investment securities |  |  |  |  |  |  |  |  |  |  |  |  | $ 97 | $ 542 | $ 1,194
Interest expense | $ 23,869 | $ 21,069 | $ 18,086 | $ 13,269 | $ 11,167 | $ 10,434 | $ 9,646 | $ 8,900 | $ 8,771 | $ 7,703 | $ 5,950 | $ 5,216 | 76,293 | 40,147 | 27,640
Legal and professional |  |  |  |  |  |  |  |  |  |  |  |  | 9,742 | 5,053 | 3,673
Other |  |  |  |  |  |  |  |  |  |  |  |  | 15,783 | 15,869 | 15,255
Income Tax Expense | 13,197 | 13,928 | 12,528 | 12,279 | 35,396 | 17,409 | 17,382 | 15,318 | 16,429 | 15,484 | 15,069 | 14,413 | 51,932 | 85,504 | 61,395
Net Income | $ 40,317 | $ 38,948 | $ 37,296 | $ 35,715 | $ 15,569 | $ 29,874 | $ 27,772 | $ 27,017 | $ 25,717 | $ 24,523 | $ 24,145 | $ 23,322 | 152,276 | 100,232 | 97,707
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other interest and dividends |  |  |  |  |  |  |  |  |  |  |  |  | 678 | 234 | 280
Gain on sale of investment securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 43
Total Income |  |  |  |  |  |  |  |  |  |  |  |  | 678 | 234 | 323
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  | 11,916 | 11,916 | 7,493
Legal and professional |  |  |  |  |  |  |  |  |  |  |  |  | 870 | 118 | 131
Directors compensation |  |  |  |  |  |  |  |  |  |  |  |  | 614 | 352 | 202
Other |  |  |  |  |  |  |  |  |  |  |  |  | 1,287 | 1,246 | 1,083
Total Expenses |  |  |  |  |  |  |  |  |  |  |  |  | 14,687 | 13,632 | 8,909
Income Before Income Tax Expense |  |  |  |  |  |  |  |  |  |  |  |  | (14,009) | (13,398) | (8,586)
Income Tax Expense |  |  |  |  |  |  |  |  |  |  |  |  | (2,892) | (4,689) | (2,919)
Loss Before Equity in Undistributed Income of Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | (11,117) | (8,709) | (5,667)
Equity in Undistributed Income of Subsidiaries |  |  |  |  |  |  |  |  |  |  |  |  | 163,393 | 108,941 | 103,374
Net Income |  |  |  |  |  |  |  |  |  |  |  |  | $ 152,276 | $ 100,232 | $ 97,707

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