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SECURITIES Securities - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Gain (Loss) on Investments [Line Items]
Change in fair value of equity securities	$ 2,141	$ 32	$ 2,165	$ 96
Visa Class B
Gain (Loss) on Investments [Line Items]
Change in fair value of equity securities	$ 2,100		$ 2,100

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