CONDENSED CONSOLIDATED STATEMENTS OF CONDITION (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Assets
Cash and due from banks	$ 58,746	$ 59,540
Federal funds sold	475	466
Interest-bearing deposits with banks	20,847	26,400
Cash and cash equivalents	80,068	86,406
Residential mortgage loans held for sale (at fair value)	10,542	36,149
Investments available-for-sale (at fair value)	815,545	825,582
Investments held-to-maturity — fair value of $220,054 and $222,024 at September 30, 2013 and December 31, 2012, respectively	225,994	215,814
Other equity securities	36,412	33,636
Total loans and leases	2,662,010	2,531,128
Less: allowance for loan and lease losses	(39,422)	(42,957)
Net loans and leases	2,622,588	2,488,171
Premises and equipment, net	46,655	48,326
Other real estate owned	1,662	5,926
Accrued interest receivable	12,464	12,392
Goodwill	84,171	84,808
Other intangible assets, net	1,792	3,163
Other assets	115,076	114,833
Total assets	4,052,969	3,955,206
Liabilities
Noninterest-bearing deposits	890,319	847,415
Interest-bearing deposits	2,026,147	2,065,619
Total deposits	2,916,466	2,913,034
Securities sold under retail repurchase agreements and federal funds purchased	53,177	86,929
Advances from FHLB	520,000	405,058
Subordinated debentures	35,000	35,000
Accrued interest payable and other liabilities	34,444	31,673
Total liabilities	3,559,087	3,471,694
Stockholders' Equity
Common stock — par value $1.00; shares authorized 50,000,000; shares issued and outstanding 24,985,146 and 24,905,392 at September 30, 2013 and December 31, 2012, respectively	24,985	24,905
Additional paid in capital	192,964	191,689
Retained earnings	278,825	255,606
Accumulated other comprehensive income (loss)	(2,892)	11,312
Total stockholders' equity	493,882	483,512
Total liabilities and stockholders' equity	$ 4,052,969	$ 3,955,206