Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended		15 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012
Interest Income
Loans	$ 52,600	$ 168,875	$ 151,446	$ 59,655
Taxable securities	4,218	14,414	16,701	6,037
Tax-exempt securities	2,422	7,442	7,483	2,500
Federal funds sold and deposits in banks	229	564	722	240
Total interest income	59,469	191,295	176,352	68,432
Interest Expense
Deposits	1,339	4,679	8,569	2,642
Federal Home Loan Bank advances	745	2,229	2,215	807
Long-term obligations	0	0	579	75
Other borrowings	120	358	377	120
Total interest expense	2,204	7,266	11,740	3,644
Net Interest Income	57,265	184,029	164,612	64,788
Provision for loan and lease losses		34,506	4,962
Net interest income after provision for loan and lease losses	58,382	149,523	159,650	63,855
Noninterest Income (Loss)
Service charges and other fees	7,609	22,222	19,746	6,991
Business Combination, Bargain Purchase, Gain Recognized, Amount	0	0	1,830	1,830
Merchant services fees	2,054	6,167	5,393	1,952
Gain on sale of investment securities, net	0	62	0	0
Bank owned life insurance	747	2,177	1,556	523
Change in FDIC loss sharing asset	(12,951)	(14,787)	(32,048)	(10,855)
Other	1,630	4,650	3,842	1,755
Total noninterest income (loss)	(911)	20,491	319	2,196
Noninterest Expense
Compensation and employee benefits	21,523	64,484	59,772	21,392
Occupancy	4,886	15,310	13,600	4,815
Merchant processing	921	2,724	2,764	976
Advertising and promotion	1,341	3,342	3,050	1,137
Data processing and communications	2,499	7,263	6,032	2,195
Legal and professional fees	2,783	6,221	4,868	1,957
Taxes, licenses and fees	1,124	3,594	2,983	1,211
Regulatory premiums	775	2,560	3,553	574
Net cost (benefit) of operation of other real estate owned	(1,069)	(536)	(423)	(195)
Amortization of intangibles	1,093	3,362	3,116	1,177
FDIC clawback liability (recovery)	334	100	3,294	1,146
Other	4,726	16,689	11,836	3,550
Total noninterest expense	40,936	125,113	114,445	39,935
Income before income taxes	16,535	44,901	45,524	26,116
Income tax provision	4,655	12,220	12,241	7,244
Net Income	11,880	32,681	33,283	18,872
Earnings per common share
Basic ($ per share)	$ 0.30	$ 0.82	$ 0.84	$ 0.48
Diluted ($ per share)	$ 0.30	$ 0.82	$ 0.84	$ 0.48
Dividends paid per common share	$ 0.30	$ 0.89	$ 0.14	$ 0.06
Weighted average number of common shares outstanding	39,289	39,248	39,092	39,131
Weighted average number of diluted common shares outstanding	39,291	39,251	39,167	39,192
Noncovered Loans [Member]
Interest Expense
Provision for loan and lease losses	2,875	11,125	2,650	500
Covered Loans [Member]
Interest Expense
Provision for loan and lease losses	$ (3,992)	$ 23,381	$ 2,312	$ 433