Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income		$ 12,850	$ 10,856
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses		2,053	2,445
Depreciation of premises and equipment		1,408	1,192
Net amortization of investment securities premiums and discounts		402	515
Net gain on sales of investment securities	[1]	(10)	(15)
Net gain on mortgage banking activities	[1]	(716)	(1,113)
Bank owned life insurance income	[1]	(669)	(783)
Net accretion of acquisition accounting fair value adjustments		(146)	(764)
Stock-based compensation		847	831
Intangible expenses		612	759
Other adjustments to reconcile net income to cash (used in) provided by operating activities		(18)	957
Originations of loans held for sale		(28,468)	(24,828)
Proceeds from the sale of loans held for sale		30,320	30,568
Contributions to pension and other postretirement benefit plans		(67)	(69)
(Increase) decrease in accrued interest receivable and other assets		(3,307)	851
Increase (decrease) in accrued interest payable and other liabilities		2,805	(3,715)
Net cash provided by operating activities		17,896	17,687
Cash flows from investing activities:
Net capital expenditures		(1,009)	(2,299)
Proceeds from maturities, calls and principal repayments of securities held-to-maturity		1,721	10,026
Proceeds from maturities, calls and principal repayments of securities available-for-sale		20,439	18,782
Proceeds from sales of securities available-for-sale		1,010	1,762
Purchases of investment securities held-to-maturity		(30,641)	(18,209)
Purchases of investment securities available-for-sale		(7,692)	(9,009)
Net increase in other investments		(5,597)	(453)
Net increase in loans and leases		(69,830)	(56,550)
Net decrease (increase) in interest-earning deposits		14,809	(3,987)
Proceeds from sales of other real estate owned		0	2,039
Purchases of bank owned life insurance		777	0
Proceeds from bank owned life insurance		0	211
Net cash used in investing activities		(77,567)	(57,687)
Cash flows from financing activities:
Net (decrease) increase in deposits		(57,575)	108,543
Net increase (decrease) in short-term borrowings		110,995	(116,805)
Proceeds from issuance of long-term debt		0	55,000
Payment of contingent consideration on acquisitions		(34)	(5,284)
Purchases of treasury stock		(655)	(1,634)
Stock issued under dividend reinvestment and employee stock purchase plans		569	617
Proceeds from exercise of stock options		268	861
Cash dividends paid		(5,866)	(5,310)
Net cash provided by financing activities		47,702	35,988
Net decrease in cash and due from banks		(11,969)	(4,012)
Cash and due from banks at beginning of year		46,721	48,757
Cash and due from banks at end of period		34,752	44,745
Supplemental disclosures of cash flow information:
Cash paid for interest		6,361	4,729
Cash paid for income taxes, net of refunds		145	157
Non cash transactions:
Transfer of loans to other real estate owned		$ 0	$ 653

[1] (1)Net interest income as well as many other revenues for financial assets and liabilities including loans, leases, securities, and derivatives are excluded from the scope of the standard. Noninterest income streams that are out-of-scope of the standard include bank owned life insurance income, sales of investment securities and mortgage banking activities.