Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 10,856	$ 7,289
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan and lease losses	2,445	326
Depreciation of premises and equipment	1,192	946
Net amortization of investment securities premiums and discounts	515	320
Net gain on sales of investment securities	(15)	(44)
Net gain on mortgage banking activities	(1,113)	(1,218)
Bank owned life insurance income	(783)	(470)
Net accretion of acquisition accounting fair value adjustments	(764)	(100)
Stock-based compensation	831	451
Intangible expenses	759	766
Other adjustments to reconcile net income to cash provided by operating activities	(130)	5
Deferred tax expense	1,087	905
Originations of loans held for sale	(24,828)	(44,414)
Proceeds from the sale of loans held for sale	30,568	46,003
Contributions to pension and other postretirement benefit plans	(69)	(60)
Decrease (increase) in accrued interest receivable and other assets	851	(2,503)
Increase in accrued interest payable and other liabilities	(3,715)	(1,469)
Net cash provided by operating activities	17,687	6,733
Cash flows from investing activities:
Net capital expenditures	(2,299)	(2,177)
Proceeds from maturities and calls of securities held-to-maturity	10,026	4,000
Proceeds from maturities and calls of securities available-for-sale	18,782	18,693
Proceeds from sales of securities available-for-sale	1,762	53,181
Purchases of investment securities held-to-maturity	(18,209)	0
Purchases of investment securities available-for-sale	(9,009)	(32,573)
Net (increase) decrease in other investments	(453)	118
Net increase in loans and leases	(56,550)	(7,507)
Net (increase) decrease in interest-earning deposits	(3,987)	21,156
Proceeds from sales of other real estate owned	2,039	0
Proceeds from bank owned life insurance	211	0
Net cash (used in) provided by investing activities	(57,687)	54,891
Cash flows from financing activities:
Net increase (decrease) in deposits	108,543	(59,934)
Net (decrease) increase in short-term borrowings	(116,805)	1,640
Proceeds from issuance of long-term debt	55,000	0
Payment of contingent consideration on acquisitions	(5,284)	(900)
Purchases of treasury stock	(1,634)	(521)
Stock issued under dividend reinvestment and employee stock purchase plans	617	617
Proceeds from exercise of stock options	861	274
Cash dividends paid	(5,310)	(3,896)
Net cash provided by (used in) financing activities	35,988	(62,720)
Net decrease in cash and due from banks	(4,012)	(1,096)
Cash and due from banks at beginning of year	48,757	32,356
Cash and due from banks at end of period	44,745	31,260
Supplemental disclosures of cash flow information:
Cash paid for interest	4,729	3,113
Cash paid for income taxes, net of refunds	157	685
Non cash transactions:
Transfer of loans to other real estate owned	$ 653	$ 1,797