Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
ASSETS
Cash and due from banks	$ 84,744	$ 118,441
Federal funds sold and other short-term investments	3,884	6,829
Cash and cash equivalents	88,628	125,270
Time deposits in other financial institutions	3,355	3,355
Securities:
Trading, at fair value	0	1,801
Available for sale, at fair value (cost of $1,405,816 at March 31, 2014, and $1,659,456 at December 31, 2013)	1,400,756	1,633,902
Held to maturity, at cost (fair value of $263,169 at March 31, 2014, and $237,437 at December 31, 2013)	257,927	237,498
Other investments, at cost	18,755	21,843
Loans held for sale	54,862	46,665
Loans and leases receivable:
Held to maturity	3,577,776	3,496,952
Loans covered by loss share agreements	5,466	5,749
Allowance for loan and lease losses	(38,573)	(41,685)
Loans and leases receivable, net	3,544,669	3,461,016
Premises, furniture and equipment, net	135,054	135,714
Other real estate, net	28,083	29,852
Goodwill	35,583	35,583
Other intangible assets, net	32,690	32,959
Cash surrender value on life insurance	81,486	81,110
FDIC indemnification asset	190	249
Other assets	65,064	76,899
TOTAL ASSETS	5,747,102	5,923,716
Deposits:
Demand	1,195,457	1,238,581
Savings	2,582,166	2,535,242
Time	885,741	892,676
Total deposits	4,663,364	4,666,499
Short-term borrowings	256,250	408,756
Other borrowings	334,916	350,109
Accrued expenses and other liabilities	35,237	58,892
TOTAL LIABILITIES	5,289,767	5,484,256
STOCKHOLDERS' EQUITY:
Common stock (par value $1 per share; authorized 25,000,000 shares; issued 18,454,828 shares at March 31, 2014 and 18,399,156 shares at December 31, 2013)	18,455	18,399
Capital surplus	92,199	91,632
Retained earnings	269,908	265,067
Accumulated other comprehensive loss	(4,903)	(17,336)
Treasury stock at cost (780 shares at March 31, 2014, and 0 shares at December 31, 2013)	(22)	0
TOTAL STOCKHOLDERS' EQUITY	457,335	439,460
TOTAL LIABILITIES AND EQUITY	5,747,102	5,923,716
Preferred Stock [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series A Preferred Stock [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	0	0
Series C Preferred Stock [Member]
STOCKHOLDERS' EQUITY:
Preferred stock	$ 81,698	$ 81,698