Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
INTEREST INCOME
Interest and Fees on Loans	$ 65,597	$ 61,632	$ 61,691
Interest on Federal Funds Sold and Other Short-term Investments	12	30	91
Interest and Dividends on Securities:
Taxable	10,409	11,091	12,946
Non-taxable	4,368	2,919	2,432
TOTAL INTEREST INCOME	80,386	75,672	77,160
INTEREST EXPENSE
Interest on Deposits	4,128	4,697	6,958
Interest on FHLB Advances and Other Borrowings	1,919	2,458	3,954
TOTAL INTEREST EXPENSE	6,047	7,155	10,912
NET INTEREST INCOME	74,339	68,517	66,248
Provision for Loan Losses	150	350	2,412
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	74,189	68,167	63,836
NON-INTEREST INCOME
Trust and Investment Product Fees	3,675	3,358	2,657
Service Charges on Deposit Accounts	4,829	4,144	4,076
Insurance Revenues	7,255	6,217	5,524
Company Owned Life Insurance	826	965	974
Interchange Fee Income	1,961	1,854	1,724
Other Operating Income	2,018	2,003	1,955
Net Gains on Sales of Loans	1,892	2,645	3,234
Net Gains on Securities	1,481	2,429	1,667
TOTAL NON-INTEREST INCOME	23,937	23,615	21,811
NON-INTEREST EXPENSE
Salaries and Employee Benefits	32,710	31,482	29,086
Occupancy Expense	5,094	4,545	4,277
Furniture and Equipment Expense	1,953	1,898	1,979
FDIC Premiums	1,113	1,050	1,116
Data Processing Fees	3,675	3,133	1,879
Professional Fees	2,294	2,577	2,247
Advertising and Promotion	1,977	1,863	1,714
Intangible Amortization	1,254	1,416	1,655
Other Operating Expenses	7,643	6,941	6,970
TOTAL NON-INTEREST EXPENSE	57,713	54,905	50,923
Income before Income Taxes	40,413	36,877	34,724
Income Tax Expense	12,069	11,464	10,669
NET INCOME	$ 28,344	$ 25,413	$ 24,055
Basic Earnings (in usd per share)	$ 2.15	$ 1.99	$ 1.91
Diluted Earnings (in usd per share)	$ 2.14	$ 1.98	$ 1.90