Consolidated Statements of Financial Condition (Unaudited) (USD $)	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Cash and due from banks	$ 46,046,000	$ 40,425,000
Mortgage-backed securities ($17,965 and $24,911 at fair value pursuant to the fair value option at March 31, 2013 and December 31, 2012, respectively)	764,701,000	720,113,000
Other securities ($29,933 and $29,577 at fair value pursuant to the fair value option at March 31, 2013 and December 31, 2012 respectively)	235,593,000	229,453,000
Loans held for sale	9,907,000	5,313,000
Loans:
Loans Receivable	3,188,702,000	3,221,375,000
Net unamortized premiums and unearned loan fees	12,495,000	12,746,000
Allowance for loan losses	(31,027,000)	(31,104,000)
Net loans	3,170,170,000	3,203,017,000
Interest and dividends receivable	17,209,000	17,917,000
Bank premises and equipment, net	22,016,000	22,500,000
Federal Home Loan Bank of New York stock	38,686,000	42,337,000
Bank owned life insurance	107,068,000	106,244,000
Goodwill	16,127,000	16,127,000
Core deposit intangible	351,000	468,000
Other assets	48,639,000	47,502,000
Total assets	4,476,513,000	4,451,416,000
Due to depositors:
Non-interest bearing	160,234,000	155,789,000
Interest-bearing:
Certificate of deposit accounts	1,200,906,000	1,253,229,000
Savings accounts	281,145,000	288,398,000
Money market accounts	139,711,000	148,618,000
NOW accounts	1,278,071,000	1,136,599,000
Total interest-bearing deposits	2,899,833,000	2,826,844,000
Mortgagors' escrow deposits	46,585,000	32,560,000
Borrowed funds ($24,742 and $23,922 at fair value pursuant to the fair value option at March 31, 2013 and December 31, 2012, respectively)	683,064,000	763,105,000
Securities sold under agreements to repurchase	185,300,000	185,300,000
Other liabilities	57,614,000	45,453,000
Total liabilities	4,032,630,000	4,009,051,000
Commitments and contingencies (Note 4 and Note 5)
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, 2013 and December 31, 2012; 30,846,118 shares and 30,743,329 shares outstanding at March 31, 2013 and December 31, 2012, respectively)	315,000	315,000
Additional paid-in capital	200,135,000	198,314,000
Treasury stock, at average cost (684,477 shares and 787,266 shares at March 31, 2013 and December 31, 2012, respectively)	(9,174,000)	(10,257,000)
Retained earnings	244,505,000	241,856,000
Accumulated other comprehensive income, net of taxes	8,102,000	12,137,000
Total stockholders' equity	443,883,000	442,365,000
Total liabilities and stockholders' equity	4,476,513,000	4,451,416,000
Multi-Family Residential [Member]
ASSETS
Loans held for sale	2,892,000	3,442,000
Loans:
Loans Receivable	1,528,353,000	1,534,438,000
Commercial Real Estate Loans [Member]
ASSETS
Loans held for sale	970,000
Loans:
Loans Receivable	507,932,000	515,438,000
One-To-Four Family - Mixed-Use Property [Member]
ASSETS
Loans held for sale	5,906,000	1,871,000
Loans:
Loans Receivable	615,661,000	637,353,000
One-To-Four Family - Residential [Member]
ASSETS
Loans held for sale	139,000
Loans:
Loans Receivable	197,268,000	198,968,000
Co-Operative Apartments [Member]
Loans:
Loans Receivable	8,221,000	6,303,000
Construction [Member]
Loans:
Loans Receivable	10,952,000	14,381,000
Small Business Administration [Member]
Loans:
Loans Receivable	8,812,000	9,496,000
Taxi Medallion [Member]
Loans:
Loans Receivable	8,777,000	9,922,000
Commercial Business And Other [Member]
Loans:
Loans Receivable	$ 302,726,000	$ 295,076,000