Investment Securities (Other Investments Table) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Other investments
FRB stock	$ 55,681us-gaap_FederalReserveBankStock	$ 55,294us-gaap_FederalReserveBankStock
FHLB stock	92,547us-gaap_FederalHomeLoanBankStock	125,032us-gaap_FederalHomeLoanBankStock
Other	426us-gaap_OtherLongTermInvestments	477us-gaap_OtherLongTermInvestments
Total other investments	$ 148,654us-gaap_OtherInvestments	$ 180,803us-gaap_OtherInvestments

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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Other investments not otherwise specified in the taxonomy.

+ References

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Other long-term investments not otherwise specified in the taxonomy, not including investments in marketable securities.

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