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Equity Securities Without Readily Determinable Fair Values (Equity securities without readily determinable fair values) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Equity Method And Other Investments [Abstract]
FHLB Stock	$ 15,050	$ 13,700
FRB Stock	1,999	1,999
Other	334	334
Total	24,948	23,454
Investment in Corporate Settlement Solutions [Member]
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 7,565	$ 7,421

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Equity Method And Other Investments

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Equity Method And Other Investments [Abstract]

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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-Publisher FASB
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Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Federal Reserve Bank stock represents an equity interest in the Federal Reserve Bank. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Amount of investments classified as other.

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