Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 25,335	$ 24,985
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	153
Depreciation and amortization of bank premises and equipment	2,844	2,320
Amortization of premium, net of accretion of discount	4,463	3,657
Net loss from fair value adjustments	367	1,537
Net gain from sale of loans	(158)	(244)
Net gain from sale of OREO	(27)	(50)
Income from bank owned life insurance	(1,538)	(1,602)
Gain from life insurance proceeds	(776)	(1,167)
Stock-based compensation expense	4,680	4,190
Deferred compensation	(1,815)	(1,930)
Deferred income tax (benefit) provision	(415)	1,005
Increase in other liabilities	840	4
Decrease (increase) in other assets	2,747	(21)
Net cash provided by operating activities	36,700	32,684
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of bank premises and equipment	(2,666)	(2,351)
Net redemptions (purchases) of Federal Home Loan Bank of New York shares	2,705	(7,457)
Purchases of securities held-to-maturity	(353)	(8,030)
Proceeds from maturities of securities held-to-maturity	45	13,330
Purchases of securities available for sale	(57,265)	(40,641)
Proceeds from sales and calls of securities available for sale	10,000	27,500
Proceeds from maturities and prepayments of securities available for sale	40,915	38,161
Proceeds from bank owned life insurance	2,741	3,911
Net originations of loans	(81,420)	(201,438)
Purchases of loans	(110,140)	(58,431)
Proceeds from sale of real estate owned	665	583
Proceeds from sale of loans	10,200	21,575
Net cash used in investing activities	(184,573)	(213,288)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in non-interest bearing deposits	3,198	16,139
Net increase in interest-bearing deposits	214,773	31,629
Net increase in mortgagors' escrow deposits	8,175	1,087
Net proceeds from short-term borrowed funds	73,500	66,500
Proceeds from long-term borrowings	25,000	173,066
Repayment of long-term borrowings	(160,084)	(82,049)
Purchases of treasury stock	(13,889)	(2,599)
Proceeds from issuance of common stock upon exercise of stock options	6
Cash dividends paid	(11,547)	(10,487)
Net cash provided by financing activities	139,132	193,286
Net (decrease) increase in cash and cash equivalents	(8,741)	12,682
Cash and cash equivalents, beginning of period	51,546	35,857
Cash and cash equivalents, end of period	42,805	48,539
SUPPLEMENTAL CASH FLOW DISCLOSURE
Interest paid	36,296	27,840
Income taxes paid	3,103	10,646
Taxes paid if excess tax benefits were not tax deductible	3,739	9,409
Non-cash activities:
Loans transferred to Other Real Estate Owned or Other Assets	673
Loans held for investment transferred to loans available for sale		$ 30,565