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Parent Company Financial Statements (Condensed Statements of Income and Comprehensive Income) (Details) - 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, 2018 | Dec. 31, 2017 | Dec. 31, 2016
EXPENSES |  |  |  |  |  |  |  |  |  |  |
Salaries and Employee Benefits |  |  |  |  |  |  |  |  | $ 51,306 | $ 46,642 | $ 43,961
Professional Fees |  |  |  |  |  |  |  |  | 5,362 | 2,817 | 3,672
Interest Expense |  |  |  |  |  |  |  |  | 19,139 | 11,121 | 8,461
INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES |  |  |  |  |  |  |  |  | 56,057 | 52,210 | 49,130
Income Tax Benefit |  |  |  |  |  |  |  |  | (9,528) | (11,534) | (13,946)
NET INCOME | $ 10,980 | $ 12,639 | $ 11,097 | $ 11,813 | $ 11,621 | $ 9,660 | $ 9,839 | $ 9,556 | 46,529 | 40,676 | 35,184
Other Comprehensive Income: |  |  |  |  |  |  |  |  |  |  |
COMPREHENSIVE INCOME |  |  |  |  |  |  |  |  | 42,051 | 44,929 | 24,968
Parent Company |  |  |  |  |  |  |  |  |  |  |
INCOME |  |  |  |  |  |  |  |  |  |  |
Interest Income |  |  |  |  |  |  |  |  | 38 | 34 | 20
Other Income (Loss) |  |  |  |  |  |  |  |  | (13) | 25 | (27)
Total Income |  |  |  |  |  |  |  |  | 8,225 | 26,034 | 15,993
EXPENSES |  |  |  |  |  |  |  |  |  |  |
Salaries and Employee Benefits |  |  |  |  |  |  |  |  | 576 | 533 | 1,006
Professional Fees |  |  |  |  |  |  |  |  | 2,079 | 602 | 1,096
Occupancy and Equipment Expense |  |  |  |  |  |  |  |  | 7 | 7 | 13
Interest Expense |  |  |  |  |  |  |  |  | 1,279 | 877 | 742
Other Expenses |  |  |  |  |  |  |  |  | 813 | 794 | 750
Total Expenses |  |  |  |  |  |  |  |  | 4,754 | 2,813 | 3,607
INCOME BEFORE INCOME TAXES AND EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES |  |  |  |  |  |  |  |  | 3,471 | 23,221 | 12,386
Income Tax Benefit |  |  |  |  |  |  |  |  | 1,042 | 1,415 | 1,284
INCOME BEFORE EQUITY IN UNDISTRIBUTED INCOME OF SUBSIDIARIES |  |  |  |  |  |  |  |  | 4,513 | 24,636 | 13,670
Equity in Undistributed Income of Subsidiaries |  |  |  |  |  |  |  |  | 42,016 | 16,040 | 21,514
NET INCOME |  |  |  |  |  |  |  |  | 46,529 | 40,676 | 35,184
Other Comprehensive Income: |  |  |  |  |  |  |  |  |  |  |
Changes in Unrealized Gain (Loss) on Securities, Available-for-Sale |  |  |  |  |  |  |  |  | (4,424) | 4,391 | (10,202)
Changes in Unrecognized Loss in Postretirement Benefit Obligation, Net |  |  |  |  |  |  |  |  | (54) | (138) | (14)
COMPREHENSIVE INCOME |  |  |  |  |  |  |  |  | 42,051 | 44,929 | 24,968
Parent Company | Bank |  |  |  |  |  |  |  |  |  |  |
INCOME |  |  |  |  |  |  |  |  |  |  |
Dividends from Subsidiaries |  |  |  |  |  |  |  |  | 7,000 | 25,000 | 15,000
Parent Company | Non-bank |  |  |  |  |  |  |  |  |  |  |
INCOME |  |  |  |  |  |  |  |  |  |  |
Dividends from Subsidiaries |  |  |  |  |  |  |  |  | $ 1,200 | $ 975 | $ 1,000

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