Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 52,580	$ 41,518	$ 32,481
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization of premiums, discounts and deferred loan fees and costs	5,153	4,581	4,151
Depreciation and amortization	4,536	3,961	3,410
Amortization of intangible assets	654	734	415
Provision for loan and lease losses	6,090	4,223	1,942
Stock based compensation	2,325	1,899	1,605
Loans originated for sale	(60,783)	(85,365)	(71,833)
Proceeds from sales of loans held for sale	63,905	86,859	72,873
Gains on sales of securities	(2,524)	(370)	(241)
Gains on sales of loans held for sale	(1,836)	(2,003)	(1,681)
Gains on proceeds from bank owned life insurance policies	(109)	(864)	(435)
Gains on debt redemption and extinguishment	0	0	(1,830)
Gains on other real estate and other repossessed assets	(646)	(248)	(102)
Loss (gain) on sale of premises and equipment	(838)	117	(6)
Long-term debt prepayment penalty	2,828	0	2,407
Deferred tax expense (benefit)	16,904	(987)	(824)
Excess tax benefits	587	0	0
Increase in other assets	(25,065)	(5,600)	(5,257)
Increase in other liabilities	3,705	1,618	3,691
NET CASH PROVIDED BY OPERATING ACTIVITIES	67,466	50,073	40,766
CASH FLOWS FROM INVESTING ACTIVITIES:
Net cash acquired in acquisitions	0	68,751	0
Proceeds from repayments and maturities of available for sale securities	91,314	79,425	71,368
Proceeds from repayments and maturities of held to maturity securities	43,218	28,421	24,453
Proceeds from sales of available for sale securities	4,500	15,654	33,613
Purchase of available for sale securities	(140,565)	(245,699)	(92,904)
Purchase of held to maturity securities	(35,841)	(59,715)	(33,811)
Proceeds from redemptions of Federal Home Loan Bank stock	13,497	3,054	456
Purchases of Federal Home Loan Bank stock	(10,974)	(323)	(4,697)
Purchase of bank owned life insurance	(33,000)	0	(7,000)
Death benefit proceeds from bank owned life insurance policy	312	2,129	1,186
Net increase in loans and leases	(289,914)	(334,040)	(315,067)
Proceeds from dispositions and sales of bank premises and equipment	1,638	21	696
Purchases of premises and equipment	(3,972)	(3,977)	(4,838)
Proceeds from sales of other real estate and other repossessed assets	4,638	3,545	1,608
NET CASH USED IN INVESTING ACTIVITIES	(355,149)	(442,754)	(324,937)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposits	276,537	515,437	204,854
Increase (decrease) in federal funds purchased and securities sold under agreements to repurchase	68,582	(94,880)	42,299
Proceeds from other borrowings	306,184	14,921	117,000
Repayments of other borrowings	(377,183)	(91,798)	(50,000)
Redemption of subordinated debentures, net	0	0	(8,170)
Net proceeds from issuance of subordinated debt	0	73,516	0
Exercise of stock options	321	285	124
Net proceeds from issuance of common stock	0	48,678	22
Retirement of restricted stock	(773)	(206)	(254)
Excess tax benefits	0	43	59
Dividends paid	(18,853)	(16,007)	(12,586)
NET CASH PROVIDED BY FINANCING ACTIVITIES	254,815	449,989	293,348
Net (decrease) increase in cash and cash equivalents	(32,868)	57,308	9,177
Cash and cash equivalents, beginning of year	175,801	118,493	109,316
CASH AND CASH EQUIVALENTS, END OF YEAR	142,933	175,801	118,493
Supplemental schedule of non-cash investing and financing activities:
Cash paid during the period for income taxes	27,423	21,744	16,737
Cash paid during the period for interest	24,571	16,435	10,770
Transfer of loans and leases into other repossessed assets and other real estate owned	3,763	3,386	1,462
Pascack and Harmony
Non-cash assets acquired:
Federal Home Loan Bank stock	0	3,742	0
Investment securities held for maturity	0	10,810	0
Investment securities available for sale	0	7,474	0
Loans, including loans held for sale	0	579,560	0
Goodwill and other intangible assets, net	0	29,060	0
Other assets	0	32,381	0
Total non-cash assets acquired	0	663,027	0
Liabilities assumed:
Deposits	0	(582,526)	0
Other borrowings	0	(66,622)	0
Other liabilities	0	(8,755)	0
Total liabilities assumed	0	(657,903)	0
Common stock issued for acquisitions	$ 0	$ 73,875	$ 0