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SECURITIES (Gross Realized Gains and Losses on the Sale of Securities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract] |  |  |  |
Gross realized gains |  | $ 4,221 | $ 1,170 | $ 302
Gross realized losses |  | (3,838) | (370) | (97)
Gains on securities transactions, net | [1] | 383 | 800 | 205
Proceeds from sales of securities |  | $ 515,764 | $ 139,046 | $ 69,516
[1] | Discontinued operations have an immaterial impact to the Company's Consolidated Statement of Cash Flows. The change in loans held for sale and goodwill impairment losses included in the Operating Activities section above are fully attributable to discontinued operations.

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