Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Allowance for loan losses
Beginning Balance	$ 51,997	$ 76,308
Charge-offs	21,252	20,079
Recoveries	3,257	5,289
Provision	6,284	4,500
Ending Balance	40,286	66,018
Ending balance: Individually evaluated for impairment	6,347	19,253
Ending balance: Collectively evaluated for impairment	33,939	46,765
Loans
Ending balance	1,238,134	1,530,406	1,368,985
Ending balance: Individually evaluated for impairment	112,577	179,074
Ending balance: Collectively evaluated for impairment	1,125,557	1,351,332
Substandard
Loans
Ending balance	148,948		232,439
Commercial
Allowance for loan losses
Beginning Balance	5,070	6,764
Charge-offs	108	155
Recoveries	10	44
Provision	(189)	(987)
Ending Balance	4,783	5,666
Ending balance: Individually evaluated for impairment	239	743
Ending balance: Collectively evaluated for impairment	4,544	4,923
Loans
Ending balance	92,695	123,205	100,186
Ending balance: Individually evaluated for impairment	1,091	3,393
Ending balance: Collectively evaluated for impairment	91,604	119,812
Commercial \| Substandard
Loans
Ending balance	1,409		2,380
Real Estate Commercial
Allowance for loan losses
Beginning Balance	30,770	42,242
Charge-offs	12,339	11,077
Recoveries	1,622	3,066
Provision	3,713	2,545
Ending Balance	23,766	36,776
Ending balance: Individually evaluated for impairment	2,707	7,616
Ending balance: Collectively evaluated for impairment	21,059	29,160
Loans
Ending balance	625,056	765,599
Ending balance: Individually evaluated for impairment	59,401	83,802
Ending balance: Collectively evaluated for impairment	565,655	681,797
Real Estate Commercial \| Substandard
Allowance for loan losses
Ending Balance	2,900	14,600
Loans
Ending balance	28,200	100,900
Real Estate Construction
Allowance for loan losses
Beginning Balance	7,937	18,344
Charge-offs	3,342	5,199
Recoveries	1,171	618
Provision	(265)	(438)
Ending Balance	5,501	13,325
Ending balance: Individually evaluated for impairment	1,233	6,548
Ending balance: Collectively evaluated for impairment	4,268	6,777
Loans
Ending balance	57,064	94,529
Ending balance: Individually evaluated for impairment	20,213	52,882
Ending balance: Collectively evaluated for impairment	36,851	41,647
Real Estate Residential
Allowance for loan losses
Beginning Balance	6,335	6,999
Charge-offs	5,186	3,384
Recoveries	233	1,339
Provision	2,759	3,263
Ending Balance	4,141	8,217
Ending balance: Individually evaluated for impairment	2,168	4,346
Ending balance: Collectively evaluated for impairment	1,973	3,871
Loans
Ending balance	447,151	519,907
Ending balance: Individually evaluated for impairment	31,872	38,995
Ending balance: Collectively evaluated for impairment	415,279	480,912
Consumer
Allowance for loan losses
Beginning Balance	884	880
Charge-offs	277	264
Recoveries	221	222
Provision	235	(19)
Ending Balance	1,063	819
Ending balance: Collectively evaluated for impairment	1,063	819
Loans
Ending balance	3,321	4,361	3,789
Ending balance: Individually evaluated for impairment		2
Ending balance: Collectively evaluated for impairment	3,321	4,359
Consumer \| Substandard
Loans
Ending balance	7		13
Unallocated
Allowance for loan losses
Beginning Balance	1,001	1,079
Provision	31	136
Ending Balance	1,032	1,215
Ending balance: Collectively evaluated for impairment	1,032	1,215
Loans
Ending balance	12,847	22,805	11,882
Ending balance: Collectively evaluated for impairment	$ 12,847	$ 22,805

Reflects the gross amount charged against earnings during the period as credit losses (bad debt expense) based on review of the loan and lease portfolio and application of the methodology for estimating credit losses.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 114

-Paragraph 20

-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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7(d))

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Paragraph 7

-Subparagraph d

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Reflects a reduction in bad debt expense attributable to collections of loans and lease receivables which had previously been fully or partially charged off as bad debts.

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Reflects the amount of loans and leases that have been removed, or charged off, from both loan receivables and the reserve for credit losses, typically because they are considered to be not salvageable or have been purchased by unconsolidated collection entities.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 8, 9

-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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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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-Name Audit and Accounting Guide (AAG)

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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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