Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
INTEREST INCOME
Interest and Fees on Loans	$ 61,691	$ 64,445	$ 53,266
Interest on Federal Funds Sold and Other Short-term Investments	91	216	76
Interest and Dividends on Securities:
Taxable	12,946	13,677	9,812
Non-taxable	2,432	1,823	1,039
TOTAL INTEREST INCOME	77,160	80,161	64,193
INTEREST EXPENSE
Interest on Deposits	6,958	11,986	10,561
Interest on FHLB Advances and Other Borrowings	3,954	4,194	4,961
TOTAL INTEREST EXPENSE	10,912	16,180	15,522
NET INTEREST INCOME	66,248	63,981	48,671
Provision for Loan Losses	2,412	6,800	5,225
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	63,836	57,181	43,446
NON-INTEREST INCOME
Trust and Investment Product Fees	2,657	2,145	1,582
Service Charges on Deposit Accounts	4,076	4,154	4,065
Insurance Revenues	5,524	5,819	5,347
Company Owned Life Insurance	974	1,100	806
Interchange Fee Income	1,724	1,501	1,243
Other Operating Income	1,955	1,452	1,740
Net Gains on Sales of Loans	3,234	2,381	2,160
Net Gain on Securities	1,667	3,024	0
TOTAL NON-INTEREST INCOME	21,811	21,576	16,943
NON-INTEREST EXPENSE
Salaries and Employee Benefits	29,086	27,992	22,070
Occupancy Expense	4,277	4,264	3,492
Furniture and Equipment Expense	2,787	2,934	2,591
FDIC Premiums	1,116	1,473	1,455
Data Processing Fees	1,071	2,092	1,411
Professional Fees	2,247	2,056	2,285
Advertising and Promotion	1,714	1,525	1,255
Intangible Amortization	1,655	1,956	898
Other Operating Expenses	6,970	6,490	5,904
TOTAL NON-INTEREST EXPENSE	50,923	50,782	41,361
Income before Income Taxes	34,724	27,975	19,028
Income Tax Expense	10,669	7,726	5,623
NET INCOME	24,055	20,249	13,405
Other Comprehensive Income (Loss):
Changes in Unrealized Gain (Loss) on Securities Available-for-Sale, Net	(124)	5,677	474
Change in Unrecognized Loss on Postretirement Benefit Obligation, Net	(21)	(38)	(176)
Change in Unrecognized Amounts in Pension, Net	(47)	4	(13)
Total Other Comprehensive Income (Loss)	(192)	5,643	285
COMPREHENSIVE INCOME	$ 23,863	$ 25,892	$ 13,690
Basic Earnings per Share	$ 1.91	$ 1.61	$ 1.21
Diluted Earnings per Share	$ 1.90	$ 1.61	$ 1.21