Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 178,598	$ 157,388
Securities held-to-maturity:
Held to maturity securities	57,888	57,832
Securities available for sale, at fair value:
Securities available for sale	796,799	647,974
Loans:
Net unamortized premiums and unearned loan fees	3,265	3,045
Allowance for Credit losses - Loans	(36,363)	(45,153)
Net loans	6,593,991	6,659,521
Interest and dividends receivable	40,912	44,041
Bank premises and equipment, net	24,018	28,179
Federal Home Loan Bank of New York stock, at cost	36,158	43,439
Bank owned life insurance	184,730	181,710
Goodwill	17,636	17,636
Core deposit intangibles	2,708	3,172
Right of Use Asset	50,155	50,743
Other assets	93,741	84,759
Total assets	8,077,334	7,976,394
Liabilities
Non-interest bearing	941,259	778,672
Interest-bearing	5,480,132	5,312,061
Total Deposits	6,421,391	6,090,733
Mortgagors' escrow deposits	67,207	45,622
Borrowed funds:
Federal Home Loan Bank advances	611,186	887,579
Subordinated debentures	90,161	90,180
Junior subordinated debentures, at fair value	51,578	43,136
Total borrowed funds	752,925	1,020,895
Operating lease liability	54,239	59,100
Other liabilities	113,476	141,047
Total liabilities	7,409,238	7,357,397
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; 34,087,623 shares issued at September 30, 2021 and December 31, 2020; 30,675,861 shares and 30,775,854 shares outstanding at September 30, 2021 and December 31, 2020, respectively)	341	341
Additional paid-in capital	262,009	261,533
Treasury stock, at average cost (3,411,762 shares and 3,373,389 shares at September 30, 2021 and December 31, 2020, respectively)	(71,738)	(69,400)
Retained earnings	486,418	442,789
Accumulated other comprehensive loss, net of taxes	(8,934)	(16,266)
Total stockholders' equity	668,096	618,997
Total liabilities and stockholders' equity	8,077,334	7,976,394
Collateralized Mortgage Backed Securities [Member]
Securities held-to-maturity:
Held to maturity securities	7,899	7,914
Securities available for sale, at fair value:
Securities available for sale	584,145	404,460
Other Debt Obligations [Member]
Securities held-to-maturity:
Held to maturity securities	49,989	49,918
Securities available for sale, at fair value:
Securities available for sale	212,654	243,514
Multi-Family Residential [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	2,498,980	2,533,952
Commercial Real Estate Loans [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	1,745,855	1,754,754
One-To-Four Family - Mixed Used Property [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	579,100	602,981
One-To-Four Family - Residential [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	280,343	245,211
Co-Operative Apartments [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	7,804	8,051
Construction Portfolio Segment [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	71,464	83,322
Small Business Administration [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	148,855	167,376
Taxi Medallion [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross		2,757
Commercial Business and Other [Member]
Loans:
Loans and Leases Receivable, before Fees, Gross	$ 1,294,688	$ 1,303,225