Note 5 - Loans - Loans Designated as Criticized or Classified (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Loans designated as criticized or classified	$ 65,942	$ 62,684
Special Mention [Member]
Loans designated as criticized or classified	21,819	28,727
Substandard [Member]
Loans designated as criticized or classified	44,123	33,957
Doubtful [Member]
Loans designated as criticized or classified
Loss [Member]
Loans designated as criticized or classified		0
Multi-family Residential Portfolio Segment [Member]
Loans designated as criticized or classified	7,426	11,182
Multi-family Residential Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	3,432	6,389
Multi-family Residential Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	3,994	4,793
Multi-family Residential Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0	0
Multi-family Residential Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans designated as criticized or classified	8,681	10,891
Commercial Real Estate Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	4,475	2,020
Commercial Real Estate Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	4,206	8,871
Commercial Real Estate Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0	0
Commercial Real Estate Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0	0
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member]
Loans designated as criticized or classified	5,122	6,526
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	1,223	2,835
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	3,899	3,691
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0	0
One-To-Four Family - Mixed-Use Property Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0	0
One-To-Four Family - Residential Portfolio Segment [Member]
Loans designated as criticized or classified	8,480
One-To-Four Family - Residential Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	883
One-To-Four Family - Residential Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	7,597
One-To-Four Family - Residential Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0
One-To-Four Family - Residential Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0
One-To-Four Family - Residential [Member]
Loans designated as criticized or classified		11,191
One-To-Four Family - Residential [Member] | Special Mention [Member]
Loans designated as criticized or classified		2,076
One-To-Four Family - Residential [Member] | Substandard [Member]
Loans designated as criticized or classified		9,115
One-To-Four Family - Residential [Member] | Doubtful [Member]
Loans designated as criticized or classified		0
One-To-Four Family - Residential [Member] | Loss [Member]
Loans designated as criticized or classified		0
Co-Operative Apartments Portfolio Segment [Member]
Loans designated as criticized or classified	575
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	575
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
Small Business Administration Portfolio Segment [Member]
Loans designated as criticized or classified	924	656	[1]
Small Business Administration Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	879	548	[1]
Small Business Administration Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	45	108	[1]
Small Business Administration Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0	0	[1]
Small Business Administration Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0	0	[1]
Construction Portfolio Segment [Member]
Loans designated as criticized or classified	730
Construction Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified
Construction Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	730
Construction Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified	0
Construction Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0
Taxi Medallion Portfolio Segment [Member]
Loans designated as criticized or classified	6,225	6,834
Taxi Medallion Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified
Taxi Medallion Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	6,225	6,834
Taxi Medallion Portfolio Segment [Member] | Doubtful [Member]
Loans designated as criticized or classified
Taxi Medallion Portfolio Segment [Member] | Loss [Member]
Loans designated as criticized or classified	0	0
Commercial Business and Other Portfolio Segment [Member]
Loans designated as criticized or classified	27,779	15,404
Commercial Business and Other Portfolio Segment [Member] | Special Mention [Member]
Loans designated as criticized or classified	10,927	14,859
Commercial Business and Other Portfolio Segment [Member] | Substandard [Member]
Loans designated as criticized or classified	16,852	545
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

[1] Balances shown are net of the portion guaranteed by the Small Business Administration totaling $1.5 million and $0.1 million at December 31, 2016 and 2015, respectively.