Consolidated Statements of Financial Condition (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 21,104,000us-gaap_CashAndDueFromBanks	$ 34,265,000us-gaap_CashAndDueFromBanks
Mortgage-backed securities (including assets pledged of $470,116 and $464,626 at March 31, 2015 and December 31, 2014, respectively; $4,458 and $4,678 at fair value pursuant to the fair value option at March 31, 2015 and December 31, 2014, respectively)	717,729,000	704,933,000
Other securities (including assets pledged of $69,372 and $57,562 at March 31, 2015 and December 31, 2014, respectively; $28,170 and $27,915 at fair value pursuant to the fair value option at March 31, 2015 and December 31, 2014, respectively)	289,955,000	268,377,000
Loans:
Net unamortized premiums and unearned loan fees	13,274,000	11,719,000
Allowance for loan losses	(24,091,000)	(25,096,000)
Net loans	3,973,963,000	3,785,277,000
Interest and dividends receivable	17,263,000	17,251,000
Bank premises and equipment, net	30,167,000us-gaap_PropertyPlantAndEquipmentNet	21,868,000us-gaap_PropertyPlantAndEquipmentNet
Federal Home Loan Bank of New York stock	50,488,000us-gaap_FederalHomeLoanBankStock	46,924,000us-gaap_FederalHomeLoanBankStock
Bank owned life insurance	113,373,000us-gaap_BankOwnedLifeInsurance	112,656,000us-gaap_BankOwnedLifeInsurance
Goodwill	16,127,000us-gaap_Goodwill	16,127,000us-gaap_Goodwill
Other assets	40,326,000us-gaap_OtherAssets	69,335,000us-gaap_OtherAssets
Total assets	5,270,495,000us-gaap_Assets	5,077,013,000us-gaap_Assets
Due to depositors:
Non-interest bearing	250,084,000	255,834,000
Interest-bearing:
Certificate of deposit accounts	1,292,721,000	1,305,823,000
Savings accounts	269,610,000	261,942,000
Money market accounts	301,587,000	290,263,000
NOW accounts	1,438,239,000	1,359,057,000
Total interest-bearing deposits	3,302,157,000	3,217,085,000
Mortgagors' escrow deposits	53,901,000	35,679,000
Borrowed funds ($28,244 and $28,771 at fair value pursuant to the fair value option at March 31, 2015 and December 31, 2014, respectively)	1,019,291,000us-gaap_DebtAndCapitalLeaseObligations	940,492,000us-gaap_DebtAndCapitalLeaseObligations
Securities sold under agreements to repurchase	116,000,000	116,000,000
Other liabilities	63,176,000us-gaap_OtherLiabilities	55,676,000us-gaap_OtherLiabilities
Total liabilities	4,804,609,000us-gaap_Liabilities	4,620,766,000us-gaap_Liabilities
Commitments and contingencies (Notes 4 & 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, 2015 and December 31, 2014; 29,407,259 shares and 29,403,823 shares outstanding at March 31, 2015 and December 31, 2014, respectively)	315,000us-gaap_CommonStockValue	315,000us-gaap_CommonStockValue
Additional paid-in capital	208,368,000	206,437,000
Treasury stock, at average cost (2,123,336 shares and 2,126,772 shares at March 31, 2015 and December 31, 2014, respectively)	(37,521,000)us-gaap_TreasuryStockValue	(37,221,000)us-gaap_TreasuryStockValue
Retained earnings	293,131,000	289,623,000
Accumulated other comprehensive income (loss), net of taxes	1,593,000	(2,907,000)
Total stockholders' equity	465,886,000us-gaap_StockholdersEquity	456,247,000us-gaap_StockholdersEquity
Total liabilities and stockholders' equity	5,270,495,000	5,077,013,000
Multi-Family Residential [Member]
Loans:
Loans	2,013,249,000	1,923,460,000
Commercial Real Estate Loans [Member]
Loans:
Loans	687,823,000	621,569,000
One-To-Four Family - Mixed-Use Property [Member]
Loans:
Loans	573,927,000	573,779,000
One-To-Four Family - Residential [Member]
Loans:
Loans	190,366,000	187,572,000
Co-Operative Apartments [Member]
Loans:
Loans	9,413,000	9,835,000
Construction [Member]
Loans:
Loans	2,828,000	5,286,000
Small Business Administration [Member]
Loans:
Loans	8,005,000	7,134,000
Taxi Medallion [Member]
Loans:
Loans	21,346,000	22,519,000
Commercial Business And Other [Member]
Loans:
Loans	$ 477,823,000	$ 447,500,000

This element represents the portion of the balance sheet assertion valued at fair value by the entity. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities, except for mortgage-backed securities, neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

No definition available.