Note 3 - Loans (Details) - Age Analysis of Recorded Investment in Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	$ 37,367	$ 61,110
60 - 89 Days Past Due	4,696	13,833
Greater than 90 Days	46,632	82,703
Total Past Due	88,695	157,646
Current	3,334,313	3,063,729
Total Loans	3,423,008	3,221,375
Multi-Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	14,101	24,059
60 - 89 Days Past Due	2,554	4,828
Greater than 90 Days	13,297	13,095
Total Past Due	29,952	41,982
Current	1,682,087	1,492,456
Total Loans	1,712,039	1,534,438
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	5,029	9,764
60 - 89 Days Past Due	523	3,622
Greater than 90 Days	9,962	15,639
Total Past Due	15,514	29,025
Current	497,038	486,413
Total Loans	512,552	515,438
One-To-Four Family - Mixed-Use Property [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	14,017	21,012
60 - 89 Days Past Due	1,099	3,368
Greater than 90 Days	9,063	16,554
Total Past Due	24,179	40,934
Current	571,572	596,419
Total Loans	595,751	637,353
One-To-Four Family - Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	3,828	3,407
60 - 89 Days Past Due	518	2,010
Greater than 90 Days	12,953	13,602
Total Past Due	17,299	19,019
Current	176,427	179,949
Total Loans	193,726	198,968
Co-Operative Apartments [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	99
Greater than 90 Days	144	234
Total Past Due	243	234
Current	9,894	6,069
Total Loans	10,137	6,303
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due		2,462
Greater than 90 Days		7,695
Total Past Due		10,157
Current	4,247	4,224
Total Loans	4,247	14,381
Small Business Administration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	106	404
Greater than 90 Days		283
Total Past Due	106	687
Current	7,686	8,809
Total Loans	7,792	9,496
Taxi Medallion [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	13,123	9,922
Total Loans	13,123	9,922
Commercial Business And Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 - 59 Days Past Due	187	2
60 - 89 Days Past Due	2	5
Greater than 90 Days	1,213	15,601
Total Past Due	1,402	15,608
Current	372,239	279,468
Total Loans	$ 373,641	$ 295,076