Consolidated Statements of Financial Position - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Cash and cash equivalents:
Cash and cash due from banks	$ 157,512	$ 144,892	$ 134,116
Interest-bearing deposits with the Federal Reserve Bank and other banks	134,025	38,128	248,022
Total cash and cash equivalents	291,537	183,020	382,138
Investment securities:
Available-for-sale, at fair value	635,641	748,864	576,211
Held-to-maturity (fair value - $499,904 at September 30, 2015, $315,740 at December 31, 2014 and $314,275 at September 30, 2014)	501,083	316,413	318,562
Total investment securities	1,136,724	1,065,277	894,773
Loans held-for-sale, at fair value	12,319	9,128	9,347
Loans	7,216,195	5,688,230	5,040,920
Allowance for loan losses	(75,626)	(75,683)	(77,006)
Net loans	7,140,569	5,612,547	4,963,914
Premises and equipment (net of accumulated depreciation of $117,566 at September 30, 2015, $108,826 at December 31, 2014 and $106,418 at September 30, 2014)	110,670	97,496	80,127
Goodwill	286,454	180,128	120,164
Other intangible assets	39,864	33,080	11,958
Interest receivable and other assets	246,417	141,467	134,564
Total Assets	9,264,554	7,322,143	6,596,985
Deposits:
Noninterest-bearing	1,875,636	1,591,661	1,344,716
Interest-bearing	5,739,575	4,487,310	4,087,211
Total deposits	7,615,211	6,078,971	5,431,927
Interest payable and other liabilities	72,568	56,572	40,366
Short-term borrowings	330,016	389,467	323,086
Other Borrowings	248,396	0	0
Total liabilities	8,266,191	6,525,010	5,795,379
Shareholders’ equity:
Preferred stock, no par value: Authorized - 2,000,000 shares at September 30, 2015 and 200,000 shares at both December 31, 2014 and September 30, 2014, none issued	0	0	0
Common stock, $1 par value per share, Authorized - 60,000,000 shares at September 30, 2015 and 45,000,000 shares at both December 31, 2014 and September 30, 2014, Issued and outstanding — 38,130,965 shares at September 30, 2015, 32,774,420 shares at December 31, 2014 and 32,762,591 shares at September 30, 2014	38,131	32,774	32,763
Additional paid-in capital	723,427	565,166	564,127
Retained earnings	265,991	231,646	224,222
Accumulated other comprehensive loss	(29,186)	(32,453)	(19,506)
Total shareholders’ equity	998,363	797,133	801,606
Total Liabilities and Shareholders’ Equity	$ 9,264,554	$ 7,322,143	$ 6,596,985