Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

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The aggregate value of securities held, which were categorized neither as trading nor held-to-maturity, for which the interest rate reset through an auction process, that failed to be liquidated through auction, and which were sold at par value during the period.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Balance held at close of period in number of shares.

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The carrying amount as of the date of the latest financial statement presented of mortgage-related securities classified as available for sale or held for investment which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party.

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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INVESTMENT SECURITIES (Narrative) (Details) $ in Thousands	3 Months Ended
INVESTMENT SECURITIES (Narrative) (Details) $ in Thousands	Mar. 31, 2019 USD ($) security shares	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($) security
Class of Stock [Line Items]
Held-to-maturity Securities	$ 0				$ 148,508
Fair value	0				144,272
Proceeds from sale of MasterCard stock	2,555	$ 0
Available-for-sale securities, sold at par	0		$ 0
Investment securities pledged as collateral	$ 800,000				$ 980,000
Number of investment securities in an unrealized loss position \| security	245				336
Visa [Member] \| Common Class B [Member]
Class of Stock [Line Items]
Shares owned (in shares) \| shares	34,631
Credit Card Intermediary [Member] \| Common Class B [Member]
Class of Stock [Line Items]
Shares owned (in shares) \| shares	11,170
Proceeds from sale of MasterCard stock	$ 2,600
Accounting Standards Update 2017-12 [Member]
Class of Stock [Line Items]
Held-to-maturity Securities				$ 148,500
Fair value				$ 144,300