Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 15,131	$ 15,194	$ 14,620
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	800	950	750
Deferred tax expense (benefit)	4,329	772	(1,337)
Depreciation and amortization	2,181	1,948	1,891
Amortization of investment security premiums and accretion of discounts, net	1,101	2,330	3,858
Stock based compensation	187	172	164
Contribution to pension plan	0	(5,000)	0
Net (losses) gains on sales of investment securities	12	(507)	(1,049)
Other-than-temporary impairment losses on investment securities	166	0	55
Net gains on sale of loans	0	0	(25)
Net gains on sale of premises, equipment and other assets	(794)	(1,040)	119
Deferred (gain) on sale of premises	(934)	0	0
Gains on sale of other real estate owned	(20)	(7)	(50)
Equity in losses of real estate limited partnerships, net	1,039	1,516	1,766
Changes in assets and liabilities:
Net change in interest receivable	386	753	(129)
Net change in other assets	(1,635)	(2,333)	2,130
Net change in interest payable	(19)	2,196	(96)
Net change in other liabilities	634	(11,282)	8,726
Net cash provided by operating activities	22,564	5,662	31,393
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sales of investment securities available for sale	53,215	129,936	131,858
Proceeds from maturities of investment securities available for sale	99,979	186,540	181,385
Proceeds from maturities of investment securities held to maturity	7,254	151	236
Proceeds from redemption of Federal Home Loan Bank stock	649	485	0
Purchases of investment securities available for sale	(60,580)	(316,251)	(358,906)
Loan originations in excess of principal payments	(86,185)	(55,428)	(117,536)
Proceeds from sales of loans, net	2,378	0	80
Proceeds from sale of other assets	0	334	0
Proceeds from sale of premises and equipment	3,026	788	52
Proceeds from sales of other real estate owned	171	505	380
Real estate limited partnership investments	(247)	(1,750)	(1,702)
Investment in bank owned life insurance	(10,000)	0	0
Purchases of bank premises and equipment	(3,019)	(3,877)	(1,929)
Net cash provided by (used in) investing activities	6,641	(58,567)	(166,082)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposits	52,496	93,200	85,684
Net increase in short-term borrowings	0	0	(2,964)
Net increase in securities sold under agreement to repurchase, short-term	(37,206)	24,993	37,834
Net decrease in securities sold under agreement to repurchase, long-term	0	0	(7,500)
Principal payments on long-term debt	(80)	(20,079)	(8,577)
Cash dividends paid	(6,432)	(6,324)	(6,233)
Sale of treasury stock	15	18	14
Increase in deferred compensation arrangements	237	213	216
Proceeds from exercise of stock options, net of withholding taxes	0	280	0
Tax benefit from exercises of stock options	8	20	1
Net cash provided by financing activities	9,038	92,321	98,475
Increase (decrease) in cash and cash equivalents	38,243	39,416	(36,214)
Cash and cash equivalents beginning of period	77,228	37,812	74,026
Cash and cash equivalents end of period	115,471	77,228	37,812
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Total interest payments	5,051	4,687	8,739
Total income tax payments	800	5,950	1,950
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Distribution of stock under deferred compensation arrangements	450	391	432
Distribution of treasury stock in lieu of cash dividend under dividend reinvestment plan	622	683	719
Non-cash exercise of stock options	181	130	124
Transfer of loans to other real estate owned	213	140	497
Transfer of securities from available for sale to held to maturity	152,887	0	0
Decrease in payable for investments purchased	$ 0	$ (9,461)	$ 9,461