Consolidated Statements of Financial Condition (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash and due from banks	$ 35,390	$ 55,721
Securities available for sale:
Mortgage-backed securities ($34,629 and $37,787 at fair value pursuant to the fair value option at March 31, 2012 and December 31, 2011, respectively)	733,873	747,288
Other securities ($31,247 and $30,942 at fair value pursuant to the fair value option at March 31, 2012 and December 31, 2011 respectively)	163,760	65,242
Loans:
Net unamortized premiums and unearned loan fees	14,410	14,888
Allowance for loan losses	(30,618)	(30,344)
Net loans	3,198,080	3,198,537
Interest and dividends receivable	18,434	17,965
Bank premises and equipment, net	24,053	24,417
Federal Home Loan Bank of New York stock	32,221	30,245
Bank owned life insurance	84,150	83,454
Goodwill	16,127	16,127
Core deposit intangible	820	937
Other assets	51,049	48,016
Total assets	4,357,957	4,287,949
Due to depositors:
Non-interest bearing	131,428	118,507
Interest-bearing:
Certificate of deposit accounts	1,461,651	1,529,110
Savings accounts	331,242	349,630
Money market accounts	193,569	200,183
NOW accounts	1,011,001	919,029
Total interest-bearing deposits	2,997,463	2,997,952
Mortgagors' escrow deposits	41,243	29,786
Borrowed funds ($26,136 and $26,311 at fair value pursuant to the fair value option at March 31, 2012 and December 31, 2011, respectively)	543,861	499,839
Securities sold under agreements to repurchase	185,300	185,300
Other liabilities	35,706	39,654
Total liabilities	3,935,001	3,871,038
STOCKHOLDERS' EQUITY
Preferred stock ($0.01 par value; 5,000,000 shares authorized; None issued)
Common stock ($0.01 par value; 100,000,000 shares authorized; 31,530,595 shares issued at March 31, 2012 and December 31, 2011; 30,919,551 shares and 30,904,177 shares outstanding at March 31, 2012 and December 31, 2011, respectively)	315	315
Additional paid-in capital	197,325	195,628
Treasury stock, at average cost (611,044 shares and 626,418 shares at March 31, 2012 and December 31, 2011, respectively)	(7,410)	(7,355)
Retained earnings	226,553	223,510
Accumulated other comprehensive income, net of taxes	6,173	4,813
Total stockholders' equity	422,956	416,911
Total liabilities and stockholders' equity	4,357,957	4,287,949
Multi-Family Residential [Member]
Loans:
Consumer Loans Receivable	1,418,254	1,391,221
Commercial Real Estate Loans [Member]
Loans:
Commercial real estate	557,688	580,783
One-To-Four Family - Mixed-Use Property [Member]
Loans:
Consumer Loans Receivable	681,389	693,932
One-To-Four Family - Residential [Member]
Loans:
Consumer Loans Receivable	214,163	220,431
Co-Operative Apartments [Member]
Loans:
Consumer Loans Receivable	5,409	5,505
Construction [Member]
Loans:
Construction	42,655	47,140
Small Business Administration [Member]
Loans:
Other Loans Receivable	13,665	14,039
Taxi Medallion [Member]
Loans:
Other Loans Receivable	49,391	54,328
Commercial Business And Other [Member]
Loans:
Other Loans Receivable	$ 231,674	$ 206,614