Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Interest Income
Interest and fees on loans	$ 50,751	$ 48,029	$ 99,946	$ 95,934
Interest on investment securities:
Taxable	2,248	2,585	4,631	5,023
Tax-exempt	1,671	1,587	3,375	3,151
Dividends on nonmarketable equity securities	411	400	649	551
Interest on deposits with the Federal Reserve Bank	99	180	224	501
Total interest income	55,180	52,781	108,825	105,160
Interest Expense
Interest on deposits	3,626	4,264	7,371	8,830
Interest on short-term borrowings	94	121	215	235
Interest on Federal Home Loan Bank (FHLB) advances	0	0	0	47
Total interest expense	3,720	4,385	7,586	9,112
Net Interest Income	51,460	48,396	101,239	96,048
Provision for loan losses	1,500	3,000	3,100	6,000
Net interest income after provision for loan losses	49,960	45,396	98,139	90,048
Noninterest Income
Service charges and fees on deposit accounts	5,486	5,535	10,416	10,730
Wealth management revenue	3,958	3,879	7,589	7,324
Other charges and fees for customer services	4,682	4,303	8,876	8,954
Mortgage banking revenue	1,491	1,649	2,285	3,661
Gain on sale of investment securities	0	257	0	1,104
Other	184	325	351	414
Total noninterest income	15,801	15,948	29,517	32,187
Operating Expenses
Salaries, wages and employee benefits	24,860	24,628	49,044	47,997
Occupancy	3,638	3,380	8,012	7,043
Equipment and software	3,792	3,447	7,253	6,897
Other	10,135	9,586	20,298	21,061
Total operating expenses	42,425	41,041	84,607	82,998
Income before income taxes	23,336	20,303	43,049	39,237
Federal income tax expense	7,100	6,100	13,000	11,800
Net Income	$ 16,236	$ 14,203	$ 30,049	$ 27,437
Net Income Per Common Share:
Basic (in dollars per share)	$ 0.54	$ 0.52	$ 1.00	$ 1.00
Diluted (in dollars per share)	$ 0.54	$ 0.51	$ 1.00	$ 0.99
Cash Dividends Declared Per Common Share (dollars per share)	$ 0.23	$ 0.21	$ 0.46	$ 0.42