Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities
Net income	$ 34,331	$ 35,348	$ 38,835
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	21,000	21,500	21,000
Depreciation and amortization of premises and equipment	3,207	3,185	2,795
Origination of loans held for sale		(3,865)
Proceeds from sale of loans held for sale		4,208
Net gain on sales of loans held for sale	9	(343)
Net gain on sales of loans (including delinquent loans)	(31)	(168)	(17)
Net (gain) loss on sales of securities	(47)		10
Other-than-temporary impairment charge on securities	776	1,578	2,045
Amortization of premium, net of accretion of discount	6,643	5,872	5,212
Fair value adjustment for financial assets and financial liabilities	(55)	(1,960)	(47)
Income from bank owned life insurance	(2,790)	(2,769)	(2,638)
Stock based compensation expense	3,260	2,686	2,249
Deferred compensation	(86)	512	244
Amortization of core deposit intangibles	469	468	469
Excess tax provision (benefits) from stock-based payment arrangements	303	(292)	(12)
Deferred income tax provision (benefit)	(804)	685	(8,041)
Net decrease in prepaid FDIC assessment	3,888	4,068	4,572
Increase in other assets	(3,695)	(1,638)	(4,402)
Increase (decrease) in other liabilities	4,719	(4,355)	4,913
Net cash provided by operating activities	71,097	64,720	67,187
Investing Activities
Purchases of premises and equipment	(1,290)	(4,561)	(3,006)
Net (purchases) redemption of Federal Home Loan Bank-NY shares	(12,092)	1,361	14,362
Purchases of securities available for sale	(311,654)	(157,741)	(397,909)
Proceeds from sales and calls of securities available for sale	12,637	8,000	91,788
Proceeds from maturities and prepayments of securities available for sale	170,798	154,600	188,700
Net originations and repayments of loans	(78,379)	12,773	(67,047)
Purchases of loans	(3,456)	(19,053)	(14,675)
Proceeds from sale of delinquent loans	44,223	27,817	8,845
Purchase of bank owned life insurance	(20,000)	(4,556)	(4,260)
Proceeds from sale of Real Estate Owned	1,225	4,053	2,283
Net cash provided by (used in) investing activities	(197,988)	22,693	(180,919)
Financing Activities
Net increase in non-interest bearing deposits	37,282	22,309	4,822
Net (decrease) increase in interest bearing deposits	(172,193)	(70,332)	491,035
Net increase in mortgagors' escrow deposits	2,774	2,471	524
Net proceeds (repayments) from short-term borrowed funds	132,000		(127,000)
Proceeds from long-term borrowings	212,518	245,447	50,470
Repayment of long-term borrowings	(80,000)	(258,076)	(271,091)
Purchases of treasury stock	(5,551)	(7,722)	(347)
Excess tax benefits (provision) from stock-based payment arrangements	(303)	292	12
Proceeds from issuance of common stock upon exercise of stock options	885	2,040	458
Cash dividends paid	(15,817)	(15,910)	(15,788)
Net cash (used in) provided by financing activities	111,595	(79,481)	133,095
Net (decrease) increase in cash and cash equivalents	(15,296)	7,932	19,363
Cash and cash equivalents, beginning of year	55,721	47,789	28,426
Cash and cash equivalents, end of year	40,425	55,721	47,789
Supplemental Cash Flow Disclosure
Interest paid	62,368	75,914	91,943
Income taxes paid	21,947	22,917	26,770
Taxes paid if excess tax benefits on stock-based compensation were not tax deductible	21,644	23,209	26,782
Non-cash activities:
Loans transferred to Other Real Estate Owned	6,127	7,286	4,813
Loans provided for the sale of Other Real Estate Owned	2,110	1,655	3,037
Loans held for investment transferred to loans held for sale	12,200
Loans held for sale transferred to loans held for investment	$ 400