CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest income:
Loans and leases	$ 63,312	$ 64,752	$ 68,331	$ 128,064	$ 135,112
Investment securities	9,558	9,580	8,782	19,138	16,601
Deposits in financial institutions	20	68	83	88	140
Total interest income	72,890	74,400	77,196	147,290	151,853
Interest expense:
Deposits	3,336	3,604	5,518	6,940	11,474
Borrowings	293	1,925	1,763	2,218	3,507
Subordinated debentures	848	1,191	1,226	2,039	2,445
Total interest expense	4,477	6,720	8,507	11,197	17,426
Net interest income	68,413	67,680	68,689	136,093	134,427
Provision for credit losses:
Non-covered loans and leases		(10,000)	5,500	(10,000)	13,300
Covered loans	(271)	3,926	5,890	3,655	8,800
Total provision for credit losses	(271)	(6,074)	11,390	(6,345)	22,100
Net interest income after provision for credit losses	68,684	73,754	57,299	142,438	112,327
Noninterest income:
Service charges on deposit accounts	3,328	3,353	3,400	6,681	6,958
Other commissions and fees	2,095	1,883	1,980	3,978	3,700
Gain on sale of leases	403	990		1,393
Other-than-temporary impairment loss on covered security	(1,115)			(1,115)
Increase in cash surrender value of life insurance	295	365	368	660	747
FDIC loss sharing (expense) income, net	(102)	(3,579)	5,316	(3,681)	4,146
Other income	(33)	250	176	217	478
Total noninterest income	4,871	3,262	11,240	8,133	16,029
Noninterest expense:
Compensation	23,699	24,187	21,717	47,886	43,646
Occupancy	7,088	7,288	7,142	14,376	14,125
Data processing	2,258	2,280	2,129	4,538	4,604
Other professional services	2,378	1,770	2,505	4,148	4,801
Business development	581	638	595	1,219	1,164
Communications	626	608	834	1,234	1,693
Insurance and assessments	1,323	1,293	1,603	2,616	3,940
Non-covered other real estate owned, net	130	1,821	2,300	1,951	3,003
Covered other real estate owned expense (income), net	2,130	822	1,205	2,952	(1,373)
Intangible asset amortization	1,737	1,735	2,308	3,472	4,615
Acquisition costs	871	25		896
Debt termination		22,598		22,598
Other expense	4,764	3,830	4,200	8,594	7,719
Total noninterest expense	47,585	68,895	46,538	116,480	87,937
Earnings before income taxes	25,970	8,121	22,001	34,091	40,419
Income tax expense	(10,413)	(2,857)	(9,160)	(13,270)	(16,902)
Net earnings	$ 15,557	$ 5,264	$ 12,841	$ 20,821	$ 23,517
Earnings per share:
Basic (in dollars per share)	$ 0.42	$ 0.14	$ 0.35	$ 0.57	$ 0.64
Diluted (in dollars per share)	$ 0.42	$ 0.14	$ 0.35	$ 0.57	$ 0.64
Dividends declared per share (in dollars per share)	$ 0.18	$ 0.18	$ 0.01	$ 0.36	$ 0.02