Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income	$ 69,644	$ 72,657
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization on loans	9,018	8,905
Net amortization on securities and borrowings	7,067	6,947
Net provision for loan and real estate losses credited to operations	(6,703)	(6,137)
Depreciation and amortization	9,495	8,889
Net gain on sales of loans and securities	(1,567)	(528)
Mortgage servicing rights amortization and valuation allowance adjustments, net	1,941	1,681
Stock-based compensation	6,432	6,488
Originations of loans held-for-sale	(90,841)	(73,653)
Proceeds from sales and principal repayments of loans held-for-sale	94,495	73,289
(Increase) decrease in accrued interest receivable	(141)	290
Bank owned life insurance income and insurance proceeds received, net	(6,598)	(5,195)
(Increase) decrease in other assets	(1,926)	7,162
Increase in accrued expenses and other liabilities	2,611	32,159
Net cash provided by operating activities	92,927	132,954
Cash flows from investing activities:
Originations of loans receivable	(1,028,137)	(1,062,910)
Loan purchases through third parties	(187,821)	(141,033)
Principal payments on loans receivable	1,897,447	1,482,443
Proceeds from sales of delinquent and non-performing loans	7,483	178,470
Purchases of securities held-to-maturity	(425,463)	(459,943)
Purchases of securities available-for-sale	(113,833)
Principal payments on securities held-to-maturity	355,657	250,468
Principal payments on securities available-for-sale	34,736	31,031
Proceeds from sales of securities available-for-sale	19,026	14,447
Net redemptions of Federal Home Loan Bank of New York stock	12,067	18,809
Proceeds from sales of real estate owned, net	20,114	40,718
Purchases of premises and equipment, net of proceeds from sales	(9,098)	(6,945)
Net cash provided by investing activities	582,178	345,555
Cash flows from financing activities:
Net decrease in deposits	(456,448)	(242,549)
Net decrease in borrowings with original terms of three months or less	(182,000)	(76,000)
Repayments of borrowings with original terms greater than three months		(150,000)
Net increase in mortgage escrow funds	29,165	28,885
Proceeds from sales of treasury stock	6,124	6,092
Cash dividends paid to stockholders	(18,634)	(18,511)
Net tax benefit excess from stock-based compensation	28	51
Net cash used in financing activities	(621,765)	(452,032)
Net increase in cash and cash equivalents	53,340	26,477
Cash and cash equivalents at beginning of period	143,185	121,950
Cash and cash equivalents at end of period	196,525	148,427
Supplemental disclosures:
Interest paid	97,982	110,171
Income taxes paid	27,217	10,665
Additions to real estate owned	4,583	41,556
Loans transferred to held-for-sale	$ 8,948	$ 187,769