Deposits (Future maturities of certificates of deposit) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Banking and Thrift [Abstract]
2015	$ 347,895
2016	107,849
2017	35,254
2018	13,887
2019	19,883
Thereafter	629
Certificates of deposit	$ 525,397	$ 309,430

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Amount of interest-bearing domestic certificate of deposit liabilities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.12)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 9

+ Details

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- Definition

Amount of time deposits maturing after the next rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

+ Details

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- Definition

Amount of time deposits maturing after the fifth rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

+ Details

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Amount of time deposits maturing in the fifth rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

+ Details

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- Definition

Amount of time deposits maturing in the fourth rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

+ Details

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- Definition

Amount of time deposits maturing in the third rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

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Amount of time deposits maturing in the second rolling twelve months following the latest balance sheet presented. Time deposits include, but are not limited to, certificates of deposits, individual retirement accounts and open accounts.

+ References

No definition available.

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