CONDENSED CONSOLIDATED STATEMENTS OF EARNINGS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011
Interest income:
Loans and leases	$ 64,752	$ 61,684	$ 66,781
Investment securities	9,580	9,107	7,819
Deposits in financial institutions	68	122	57
Total interest income	74,400	70,913	74,657
Interest expense:
Deposits	3,604	4,103	5,956
Borrowings	1,925	1,782	1,744
Subordinated debentures	1,191	1,255	1,219
Total interest expense	6,720	7,140	8,919
Net interest income	67,680	63,773	65,738
Provision for credit losses:
Non-covered loans and leases	(10,000)		7,800
Covered loans	3,926	4,122	2,910
Total provision for credit losses	(6,074)	4,122	10,710
Net interest income after provision for credit losses	73,754	59,651	55,028
Noninterest income:
Service charges on deposit accounts	3,353	3,326	3,558
Other commissions and fees	1,883	1,864	1,720
Gain on sale of leases	990
Increase in cash surrender value of life insurance	365	337	379
FDIC loss sharing (expense) income, net	(3,579)	2,667	(1,170)
Other income	250	60	302
Total noninterest income	3,262	8,254	4,789
Noninterest expense:
Compensation	24,187	21,597	21,929
Occupancy	7,288	7,137	6,983
Data processing	2,280	2,132	2,475
Other professional services	1,770	1,946	2,296
Business development	638	609	569
Communications	608	640	859
Insurance and assessments	1,293	1,590	2,337
Non-covered other real estate owned, net	1,821	1,714	703
Covered other real estate owned expense (income), net	822	226	(2,578)
Intangible asset amortization	1,735	1,836	2,307
Acquisition costs	25	600
Debt termination	22,598
Other expense	3,830	3,442	3,519
Total noninterest expense	68,895	43,469	41,399
Earnings before income taxes	8,121	24,436	18,418
Income tax expense	(2,857)	(10,553)	(7,742)
Net earnings	$ 5,264	$ 13,883	$ 10,676
Earnings per share:
Basic (in dollars per share)	$ 0.14	$ 0.38	$ 0.29
Diluted (in dollars per share)	$ 0.14	$ 0.38	$ 0.29
Dividends declared per share (in dollars per share)	$ 0.18	$ 0.18	$ 0.01