Deposits and Related Interest (Maturities of Time Deposits) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Maturities of Time Deposits [Abstract]
Time Deposit Maturities Less Than Three Month	$ 382,673
Time Deposit Maturities Three To Twelve Month	395,057
Total Time deposits	777,730us-gaap_TimeDepositMaturitiesYearOne
Time Deposit Maturities, Year Two	458,882us-gaap_TimeDepositMaturitiesYearTwo
Time Deposit Maturities, Year Three	213,570us-gaap_TimeDepositMaturitiesYearThree
Time Deposit Maturities, Year Four	49,401us-gaap_TimeDepositMaturitiesYearFour
Time Deposit Maturities, Year Five	35,176us-gaap_TimeDepositMaturitiesYearFive
Certificates of deposit	$ 1,534,759

Time Deposit Maturities Less Than Three Month

No definition available.

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- Definition

Time Deposit Maturities Three To Twelve Month

+ References

No definition available.

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- Definition

Total Time Deposits Excluding Equity Indexes Options

+ References

No definition available.

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- Definition

Amount of time deposits maturing in the fifth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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Amount of time deposits maturing in the fourth fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

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Amount of time deposits maturing in the next fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

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Amount of time deposits maturing in the third fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

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Amount of time deposits maturing in the second fiscal year following the latest fiscal year. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

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