Time Certificates of Deposit (Schedule of Time Certifcates of Deposit Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Deposits [Abstract]
Time deposits amounts scheduled to mature through the end of the current year	$ 257,253
Time deposits weighted average rate for maturities through the end of the current year	0.62%
Time deposits amounts scheduled to mature in year two	268,853
Time deposits weighted average rate for maturities in year two	1.18%
Time deposits amounts scheduled to mature in year three	136,786
Time deposits weighted average rate for maturities in year three	1.89%
Time deposits amounts scheduled to mature in year four	82,690
Time deposits weighted average rate for maturities in year four	1.62%
Time deposits amounts scheduled to mature in year five	39,730
Time deposits weighted average rate for maturities in year five	1.57%
Time deposits amounts schedule to mature after year five	31,798
Time deposits weighted average rate for maturities after year five	1.28%
Time deposits	$ 817,110	$ 870,232

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Amount of time deposits maturing after 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 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

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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.

+ References

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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.

+ References

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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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Amount of deposits that cannot be withdrawn before a set date without penalty or for which notice of withdrawal is required. 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 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

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Weighted average interest rate for time deposits held by the entity with maturities greater than five years.

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No definition available.

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Weighted average interest rate for time deposits held by the entity with maturities greater than four years, but five years or less.

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No definition available.

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Weighted average interest rate for time deposits held by the entity with maturities greater than three years, but four years or less.

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No definition available.

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Weighted average interest rate for time deposits held by the entity with maturities of one year or less.

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No definition available.

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Weighted average interest rate for time deposits held by the entity with maturities greater than two years, but three years or less.

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No definition available.

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Weighted average interest rate for time deposits held by the entity with maturities greater than one year, but two years or less.

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No definition available.

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