Loans and Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	$ 38,148	$ 36,722	$ 40,292	$ 31,008
Charge-Offs	(9,329)	(10,503)	(17,785)	(16,486)
Recoveries	1,978	1,426	2,262	1,686
Provision For Loan Losses	2,288	8,330	6,403	13,509
Change in FDIC Indemnification Asset	(226)	4,881	1,687	11,139
Loans and leases, Allowance, Ending Balance	32,859	40,856	32,859	40,856
Additions To Allowance For Loan Losses For Covered Loans	(288)	5,900	2,100	13,800
Commercial Real Estate [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	12,531	10,695	15,718	11,789
Charge-Offs	(318)	(2,075)	(1,725)	(3,789)
Recoveries	868	4	872	17
Provision For Loan Losses	880	2,630	(365)	2,912
Change in FDIC Indemnification Asset	(1,070)	3,081	(1,609)	3,406
Loans and leases, Allowance, Ending Balance	12,891	14,335	12,891	14,335
Commercial Construction [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	10,054	13,115	9,807	10,957
Charge-Offs	(4,805)	(5,525)	(7,924)	(7,689)
Recoveries	801	676	835	865
Provision For Loan Losses	(498)	2,864	2,360	4,717
Change in FDIC Indemnification Asset	1,445	0	1,919	2,280
Loans and leases, Allowance, Ending Balance	6,997	11,130	6,997	11,130
Commercial and Industrial [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	3,547	4,966	3,578	4,338
Charge-Offs	(900)	(1,405)	(2,239)	(2,130)
Recoveries	193	185	286	217
Provision For Loan Losses	718	1,845	1,935	2,798
Change in FDIC Indemnification Asset	(17)	0	(19)	368
Loans and leases, Allowance, Ending Balance	3,541	5,591	3,541	5,591
Leases [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	0	18	18	18
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Provision For Loan Losses	0	0	(18)	0
Change in FDIC Indemnification Asset	0	0	0	0
Loans and leases, Allowance, Ending Balance	0	18	0	18
Residential Construction [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	345	620	593	699
Charge-Offs	0	(163)	0	(180)
Recoveries	16	0	21	0
Provision For Loan Losses	17	193	(235)	131
Change in FDIC Indemnification Asset	(1)	0	(2)	0
Loans and leases, Allowance, Ending Balance	377	650	377	650
Residential Mortgage [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	11,536	7,250	10,441	3,058
Charge-Offs	(3,092)	(1,248)	(5,671)	(2,587)
Recoveries	90	555	233	578
Provision For Loan Losses	842	681	2,391	2,904
Change in FDIC Indemnification Asset	(603)	1,800	1,379	5,085
Loans and leases, Allowance, Ending Balance	8,773	9,038	8,773	9,038
Consumer and Other [Member]
Allowance for Loan Losses Rollforward [Line Items]
Loans and leases, Allowance, Beginning Balance	135	58	137	149
Charge-Offs	(214)	(87)	(226)	(111)
Recoveries	10	6	15	9
Provision For Loan Losses	329	117	335	47
Change in FDIC Indemnification Asset	20	0	19	0
Loans and leases, Allowance, Ending Balance	$ 280	$ 94	$ 280	$ 94