Note 5 - Loans Designated as Criticized or Classified (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Multi-family Residential Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	$ 7,678	$ 4,361
Multi-family Residential Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	5,416	5,421
Multi-family Residential Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Multi-family Residential Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Multi-family Residential Portfolio Segment [Member]
Loans designated as criticized or classified	13,094	9,782
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	1,552	1,821
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	4,952	3,812
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Commercial Real Estate Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Commercial Real Estate Portfolio Segment [Member]
Loans designated as criticized or classified	6,504	5,633
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	3,797	3,087
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	9,785	10,990
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Loans designated as criticized or classified	13,582	14,077
One-To-Four Family - Residential Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	1,346	1,437
One-To-Four Family - Residential Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	10,431	12,255
One-To-Four Family - Residential Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
One-To-Four Family - Residential Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
One-To-Four Family - Residential Portfolio Segment [Member]
Loans designated as criticized or classified	11,777	13,692
Co-Operative Apartments Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified
Co-Operative Apartments Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified
Co-Operative Apartments Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Co-Operative Apartments Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Co-Operative Apartments Portfolio Segment [Member]
Loans designated as criticized or classified
Construction Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	576
Construction Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	570	1,000
Construction Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Construction Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Construction Portfolio Segment [Member]
Loans designated as criticized or classified	1,146	1,000
Small Business Administration Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	554	229
Small Business Administration Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	870	224
Small Business Administration Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Small Business Administration Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Small Business Administration Portfolio Segment [Member]
Loans designated as criticized or classified	1,424	453
Taxi Medallion Portflio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified
Taxi Medallion Portflio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	6,364	2,118
Taxi Medallion Portflio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Taxi Medallion Portflio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Taxi Medallion Portflio Segment [Member]
Loans designated as criticized or classified	6,364	2,118
Commercial Business and Other Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	730
Commercial Business and Other Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	2,710	3,123
Commercial Business and Other Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Commercial Business and Other Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified
Commercial Business and Other Portfolio Segment [Member]
Loans designated as criticized or classified	3,440	3,123
Special Mention [Member]
Loans designated as criticized or classified	16,233	10,935
Substandard [Member]
Loans designated as criticized or classified	41,098	38,943
Doubtful [Member]
Loans designated as criticized or classified
Loss [Member]
Loans designated as criticized or classified
Loans designated as criticized or classified	$ 57,331	$ 49,878