Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
ASSETS
Cash and due from banks	$ 193,816		$ 165,030
Interest-earning deposits with banks	30,646		14,531
Total cash and cash equivalents	224,462		179,561
Securities available for sale at fair value (amortized cost of $1,581,989 and $1,680,491, respectively)	1,590,017		1,664,111
Federal Home Loan Bank stock at cost	31,912		32,529
Loans held for sale	750		735
Loans, net	4,645,280		4,444,842
FDIC loss sharing asset	27,981		39,846
Interest receivable	22,183		22,206
Premises and equipment, net	156,645		154,732
Other real estate owned ($13,051 and $12,093 covered by FDIC loss share, respectively)	28,254		35,927
Goodwill	343,952		343,952
Intangible Assets, Net (Excluding Goodwill)	22,792		25,852
Other assets	203,230		217,289
Total Assets	7,297,458		7,161,582
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing	2,190,161		2,171,703
Interest-bearing	3,794,908		3,787,772
Total deposits	5,985,069		5,959,475
Federal Home Loan Bank advances	110,587		36,606
Securities sold under agreements to repurchase	25,000		25,000
Other liabilities	84,651		87,252
Total liabilities	6,205,307		6,108,333
Commitments and contingent liabilities
Shareholders' equity:
Preferred Stock, Shares Authorized	2,000		2,000
Preferred Stock, Shares Issued	9		9
Preferred Stock, Value, Issued	2,217		2,217
Authorized shares	63,033		63,033
Common Stock Shares Issued And Outstanding	52,635		51,265
Common Stock (no par value)	861,609		860,562
Retained earnings	224,765		202,514
Accumulated other comprehensive income	3,560	[1]	(12,044)	[1]
Total shareholders' equity	1,092,151		1,053,249
Total Liabilities and Shareholders' Equity	7,297,458		7,161,582
Noncovered Loans [Member]
ASSETS
Loans held for sale	750		735
Loans, excluding covered loans, net of unearned income of ($57,126) and ($68,282), respectively	4,452,674		4,219,451
Loans and Leases Receivable, Allowance	49,494		52,280
Loans, net	4,403,180		4,167,171
Other real estate owned ($13,051 and $12,093 covered by FDIC loss share, respectively)	15,203		23,834
Covered Loans [Member]
ASSETS
Loans and Leases Receivable, Allowance	19,801		20,174
Loans, net	242,100		277,671
Other real estate owned ($13,051 and $12,093 covered by FDIC loss share, respectively)	$ 13,051		$ 12,093

[1] All amounts are net of tax. Amounts in parenthesis indicate debits.