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Securities Securities (Summary of Gross Realized Gains and Gross Realized Losses (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from Sale of Debt Securities, Available-for-sale		$ 175,586	$ 12,569	$ 259,554	$ 32,330
Gross Realized Gains from sales of debt securities available for sale		1,510	87	3,357	235
Gross Realized Losses from sales of debt securities available for sale		(1,225)	(83)	(1,225)	(129)
Other securities losses, net	[1]	0	(37)	0	(117)
Investment securities gain (loss), net		$ 285	$ (33)	$ 2,132	$ (11)
[1] Other securities losses, net includes net unrealized loss activity associated with equity securities for the periods ended June 30, 2018. There were no sales of equity securities during the periods presented.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Amount of realized and unrealized gain (loss) on investment.

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Amount of cash inflow from sale of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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