Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net income	$ 10,409	$ 10,715
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,061	1,173
Net (gain) loss on sale of other real estate owned	0	(134)
Writedown of other real estate owned	346	259
Provision for loan losses	800	800
Deferred tax (benefit) expense	(179)	891
Net amortization of securities	1,152	1,520
Stock based compensation expense	56	48
Net loss (gain) on sale of bank premises and equipment	3	(1)
Net gain on sales and calls of securities	0	(249)
Decrease in taxes receivable	4,703	4,379
Decrease in interest receivable	264	424
Increase in interest payable	48	22
Increase in other assets	(632)	(1,625)
Decrease in accrued expenses and other liabilities	(1,912)	(1,390)
Total adjustments	5,710	6,117
Net cash provided by operating activities	16,119	16,832
Cash flows from investing activities:
Proceeds from sales and calls of securities available for sale	48,913	52,625
Proceeds from calls and maturities of held to maturity securities	2,891	3,686
Purchases of securities available for sale	(31,121)	(40,928)
Net increase in loans	(10,275)	(38,670)
Proceeds from dispositions of other real estate owned	1,461	1,552
Proceeds from dispositions of bank premises and equipment	18	51
Purchases of bank premises and equipment	(799)	(1,470)
Net cash used in investing activities	11,088	(23,154)
Cash flows from financing activities:
Net increase in deposits	42,110	84,927
Net (decrease) increase in short-term borrowings	(21,698)	5,622
Proceeds from exercise of stock options and related tax benefits	0	99
Proceeds from sale of treasury stock	655	675
Purchases of treasury stock	0	(99)
Dividends paid	(6,252)	(6,224)
Net cash provided by financing activities	14,815	85,000
Net increase in cash and cash equivalents	42,022	78,678
Cash and cash equivalents at beginning of period	718,156	671,448
Cash and cash equivalents at end of period	760,178	750,126
Cash paid during the year for:
Interest paid	3,796	4,138
Income taxes paid	1,360	2,037
Other non cash items:
Transfer of loans to other real estate owned	1,036	2,194
Increase in dividends payable	7	4
Change in unrealized gain on securities available for sale-gross of deferred taxes	8,035	3,060
Change in deferred tax effect on unrealized gain on securities available for sale	(3,214)	(1,222)
Amortization of net actuarial loss and prior service credit on pension and postretirement plans	56	(27)
Change in deferred tax effect of amortization of net actuarial loss and prior service credit	$ (23)	$ 11