CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 109,434	$ 101,460
Interest-bearing time deposits	55,069	38,443
Investment securities available for sale	536,201	513,343
Investment securities held to maturity (fair value of $560,847 and $378,174)	559,378	361,020
Mortgage loans held for sale	5,331	22,300
Loans	3,632,409	2,902,209
Less: Allowance for loan losses	(67,870)	(69,366)
Net loans	3,564,539	2,832,843
Premises and equipment	74,454	52,749
Federal Reserve and Federal Home Loan Bank stock	38,990	32,785
Interest receivable	18,672	16,367
Core deposit intangibles	13,818	8,154
Goodwill	188,948	141,375
Cash surrender value of life insurance	164,571	125,397
Other real estate owned	22,246	13,263
Tax asset, deferred and receivable	56,614	30,867
Other assets	28,997	14,455
TOTAL ASSETS	5,437,262	4,304,821
Deposits:
Noninterest-bearing	930,772	801,597
Interest-bearing	3,300,696	2,544,786
Total Deposits	4,231,468	3,346,383
Borrowings:
Federal funds purchased	125,645	18,862
Securities sold under repurchase agreements	148,672	141,828
Federal Home Loan Bank advances	122,140	94,238
Subordinated debentures and term loans	126,807	112,161
Total Borrowings	523,264	367,089
Interest payable	1,771	1,841
Other liabilities	45,836	37,272
Total Liabilities	4,802,339	3,752,585
COMMITMENTS AND CONTINGENT LIABILITIES
STOCKHOLDERS' EQUITY
Common Stock - $.125 stated value, Authorized 50,000,000 shares, Issued and outstanding 35,921,761 and 28,692,616 shares	4,490	3,587
Additional paid-in capital	393,783	256,843
Retained earnings	242,935	206,397
Accumulated other comprehensive loss	(6,410)	(5,499)
Total Stockholders' Equity	634,923	552,236
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	5,437,262	4,304,821
Preferred stock, Series B
STOCKHOLDERS' EQUITY
Preferred Stock (Senior Non-Cumulative Perpetual Preferred Stock, Series B - no-par value, $1,000 liquidation value, Authorized 500,000 shares, Issued and outstanding 90,782.94 shares) (Cumulative Preferred Stock - $1,000 par value, $1,000 liquidation value, Authorized 600 shares, Issued and outstanding 125 shares)		90,783
Cumulative Preferred Stock
STOCKHOLDERS' EQUITY
Preferred Stock (Senior Non-Cumulative Perpetual Preferred Stock, Series B - no-par value, $1,000 liquidation value, Authorized 500,000 shares, Issued and outstanding 90,782.94 shares) (Cumulative Preferred Stock - $1,000 par value, $1,000 liquidation value, Authorized 600 shares, Issued and outstanding 125 shares)	$ 125	$ 125