Consolidated Statements Of Cash Flows - Equity Component [Domain] - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities
Net income	$ 29,975	$ 26,560
Adjustments to reconcile net income to net cash provided by operating activities:
Accretion and amortization	(2,976)	(2,599)
Provision for loan losses	3,724	1,798
Depreciation of premises and equipment	3,027	3,011
Deferred income tax expense	4,549	2,615
Pension Expense	413	286
Realized investment securities gains	(2,130)	(901)
Stock-compensation expense	1,060	889
Increase in value of bank-owned life insurance	(1,547)	(1,520)
Loans originated for sale	(9,191)	(2,454)
Proceeds from the sale of loans originated for sale	9,327	3,129
Gain on sale of loans	(167)	(84)
Gain on sale of insurance division	(11,084)	0
Change in accrued interest receivable	(1,012)	(861)
Change in other assets	5,703	(5,986)
Change in other liabilities	(19,307)	(9,919)
Net Cash Provided by Operating Activities	10,364	13,964
Investing Activities
Proceeds from sales of securities available-for-sale	290	1,660
Proceeds from maturities and calls of securities available-for-sale	33,323	26,237
Proceeds from maturities and calls of securities held-to-maturity	7,648	1,254
Purchases of securities available-for-sale	(67,911)	(13,530)
Purchases of securities held-to-maturity	0	(10,226)
Net (increase) decrease in loans	(31,705)	29,225
Purchases of premises and equipment	(978)	(664)
Proceeds from Divestiture of Businesses	15,250	0
Net Cash (Used In) Provided by Investing Activities	(44,083)	33,956
Financing Activities
Net increase in noninterest-bearing deposits	18,250	7,163
Net increase (decrease) in interest-bearing deposits	11,985	(5,638)
Net increase (decrease) in short-term borrowings	18,240	(4,656)
Purchases of treasury stock	0	(8,363)
Proceeds from exercise of stock options, net of tax benefit	996	553
Proceeds from Warrant Exercises	1,896	0
Dividends paid	(12,452)	(12,115)
Net Cash Provided by (Used in) Financing Activities	38,915	(23,056)
Increase in Cash and Cash Equivalents	5,196	24,864
Cash and cash equivalents at beginning of period	148,228	85,876
Cash and Cash Equivalents at End of Period	$ 153,424	$ 110,740