Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
ASSETS
Cash and due from banks, noninterest-bearing	$ 92,633	$ 83,881	$ 82,798
Due from banks, interest-bearing	313,141	136,644	154,199
Federal funds sold	1,508	2,749	603
Total cash and cash equivalents	407,282	223,274	237,600
Securities available for sale	124,078	173,041	186,634
Securities held to maturity (fair values of $57,612, $56,700, and $58,376)	53,879	53,995	54,361
Presold mortgages in process of settlement	5,926	5,422	4,552
Loans - non-covered	2,257,530	2,252,885	2,190,583
Loans - covered by FDIC loss share agreement	176,855	210,309	240,279
Total loans	2,434,385	2,463,194	2,430,862
Allowance for loan losses - non-covered	(41,966)	(44,263)	(44,816)
Allowance for loan losses - covered	(3,830)	(4,242)	(6,035)
Total allowance for loan losses	(45,796)	(48,505)	(50,851)
Net loans	2,388,589	2,414,689	2,380,011
Premises and equipment	76,705	77,448	77,597
Accrued interest receivable	8,795	9,649	9,780
FDIC indemnification asset	29,406	48,622	92,950
Goodwill	65,835	65,835	65,835
Other intangible assets	2,446	2,834	3,274
Foreclosed real estate - non-covered	9,346	12,251	15,425
Foreclosed real estate - covered	9,934	24,497	32,005
Bank-owned life insurance	44,685	44,040	43,276
Other assets	39,593	29,473	44,110
Total assets	3,266,499	3,185,070	3,247,410
LIABILITIES
Deposits: Noninterest bearing checking accounts	525,332	482,650	454,785
Interest bearing checking accounts	551,577	557,413	546,203
Money market accounts	558,373	551,335	564,837
Savings accounts	175,084	169,023	166,497
Time deposits of $100,000 or more	554,537	564,527	612,912
Other time deposits	389,676	426,071	473,119
Total deposits	2,754,579	2,751,019	2,818,353
Borrowings	116,394	46,394	46,394
Accrued interest payable	778	879	1,071
Other liabilities	13,655	14,856	21,487
Total liabilities	2,885,406	2,813,148	2,887,305
Commitments and contingencies
SHAREHOLDERS' EQUITY
Common stock, no par value per share. Authorized: 40,000,000 shares Issued & outstanding: 19,705,381, 19,679,659, and 19,679,659 shares	132,417	132,099	132,097
Retained earnings	175,871	167,136	158,708
Accumulated other comprehensive income (loss)	2,018	1,900	(1,487)
Total shareholders' equity	381,093	371,922	360,105
Total liabilities and shareholders' equity	3,266,499	3,185,070	3,247,410
Series B Preferred Stock [Member]
SHAREHOLDERS' EQUITY
Preferred stock, no par value per share. Authorized: 5,000,000 shares Series B issued & outstanding: 63,500, 63,500, and 63,500 shares Series C, convertible, issued & outstanding: 728,706, 728,706, and 728,706 shares	63,500	63,500	63,500
Series C Preferred Stock [Member]
SHAREHOLDERS' EQUITY
Preferred stock, no par value per share. Authorized: 5,000,000 shares Series B issued & outstanding: 63,500, 63,500, and 63,500 shares Series C, convertible, issued & outstanding: 728,706, 728,706, and 728,706 shares	$ 7,287	$ 7,287	$ 7,287