Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 36,901	$ 50,738
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization on loans	5,058	6,219
Net amortization on securities and borrowings	3,988	4,855
Net provision for loan and real estate losses credited to operations	(5,545)	(2,774)
Depreciation and amortization	7,299	6,134
Net gain on sales of loans and securities	(1,091)	(1,081)
Mortgage servicing rights amortization and valuation allowance adjustments, net	2,696	611
Stock-based compensation	2,107	3,916
Deferred income tax expense (benefit)	1,206	(10,019)
Originations of loans held-for-sale	(55,461)	(61,079)
Proceeds from sales and principal repayments of loans held-for-sale	57,312	60,759
Increase in accrued interest receivable	(569)	(124)
Bank owned life insurance income and insurance proceeds received, net	(2,625)	(4,376)
Increase in other assets	(1,498)	(1,417)
Decrease in accrued expenses and other liabilities	(4,657)	(3,882)
Net cash provided by operating activities	45,121	48,480
Cash flows from investing activities:
Originations of loans receivable	(641,986)	(767,399)
Loan purchases through third parties	(101,252)	(117,596)
Principal payments on loans receivable	1,042,436	1,311,864
Proceeds from sales of delinquent and non-performing loans	2,182	6,183
Purchases of securities held-to-maturity	(822,576)	(272,524)
Purchases of securities available-for-sale	(30,000)	(88,156)
Principal payments on securities held-to-maturity	438,127	245,317
Principal payments on securities available-for-sale	74,610	22,977
Proceeds from sales of securities available-for-sale	23,065	19,026
Net (purchases) redemptions of Federal Home Loan Bank of New York stock	(6,772)	2,370
Proceeds from sales of real estate owned, net	10,527	15,524
Purchases of premises and equipment, net of proceeds from sales	(4,142)	(5,478)
Net cash (used in) provided by investing activities	(15,781)	372,108
Cash flows from financing activities:
Net decrease in deposits	(154,897)	(277,139)
Net decrease in borrowings with original terms of three months or less	(426,000)	(129,000)
Repayments of borrowings with original terms greater than three months	(895,000)	0
Proceeds from borrowings with terms greater than three months	1,375,000	0
Net increase in mortgage escrow funds	15,607	17,502
Proceeds from sales of treasury stock	83	6,055
Cash dividends paid to stockholders	(12,495)	(12,412)
Net tax benefit excess from stock-based compensation	19	11
Net cash used in financing activities	(97,683)	(394,983)
Net (decrease) increase in cash and cash equivalents	(68,343)	25,605
Cash and cash equivalents at beginning of period	200,538	143,185
Cash and cash equivalents at end of period	132,195	168,790
Supplemental disclosures:
Interest paid	61,544	68,450
Income taxes paid	13,595	17,732
Additions to real estate owned	6,257	3,736
Loans transferred to held-for-sale	$ 1,562	$ 6,205