Deposits (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Deposits, by Type [Abstract]
Noninterest-bearing demand	$ 1,085,857,000	$ 875,791,000
Interest-bearing demand	1,055,052,000	828,306,000
Savings	1,307,977,000	1,147,786,000
Time deposits over $100,000	531,666,000	531,043,000
Other time deposits	940,891,000	983,931,000
Total deposits	4,921,443,000	4,366,857,000
Maturities of Time Deposits [Abstract]
Time deposit maturities, one year or less	927,000,000
Time deposits maturities, after next twelve months	546,000,000
Time Deposit Maturities, 2014	239,000,000
Time deposit maturities, 2015	191,000,000
Time deposit maturities, 2016	60,000,000
Time deposit maturities, 2017	56,000,000
Demand deposit overdrafts	$ 2,900,000	$ 1,800,000

The amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

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Amount of deposits held by the entity that have been reclassified as loan balances receivable, for example, but not limited to, overdrafts receivable.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

+ References

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 210

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The aggregate amount of all domestic and foreign noninterest-bearing deposits liabilities held by the entity.

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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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-Publisher FASB

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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.

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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.

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The aggregate amount of domestic and foreign time deposit liabilities (including certificates of deposits, individual retirement accounts and open accounts) in denominations of $100,000 or more.

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-Publisher AICPA

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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The aggregate amount of domestic or foreign time deposits (including certificates of deposits, individual retirement accounts and open accounts) that total to less than $100,000.

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No definition available.

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Amount of time deposits maturing after 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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