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Loans and Allowance for Loan Losses (Details 1) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Allowance For Credit Losses [Line Items]
Letters of credit outstanding, Amount	$ 105,808us-gaap_LettersOfCreditOutstandingAmount	$ 94,307us-gaap_LettersOfCreditOutstandingAmount
Loan commitments and unused lines of credit [Member]
Financing Receivable, Allowance For Credit Losses [Line Items]
Letters of credit outstanding, Amount	105,136us-gaap_LettersOfCreditOutstandingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_UnusedLinesOfCreditMember	93,286us-gaap_LettersOfCreditOutstandingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_UnusedLinesOfCreditMember
Standby letters of credit [Member]
Financing Receivable, Allowance For Credit Losses [Line Items]
Letters of credit outstanding, Amount	$ 672us-gaap_LettersOfCreditOutstandingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_StandbyLettersOfCreditMember	$ 1,021us-gaap_LettersOfCreditOutstandingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_StandbyLettersOfCreditMember

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- Details

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type: