Note 3 - Loans (Details) - Loans Designated as Criticized or Classified (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	$ 56,500	$ 81,800
Multi-Family Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	6,494	9,940
Multi-Family Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	10,226	19,089
Multi-Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	16,720	29,029
Commercial Real Estate Loans [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	5,453	13,503
Commercial Real Estate Loans [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	7,100	16,820
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	12,553	30,323
One-To-Four Family - Mixed-Use Property [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	5,254	7,992
One-To-Four Family - Mixed-Use Property [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	12,499	14,898
One-To-Four Family - Mixed-Use Property [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	17,753	22,890
One-To-Four Family - Residential [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	2,352	2,848
One-To-Four Family - Residential [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	13,056	14,026
One-To-Four Family - Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	15,408	16,874
Co-Operative Apartments [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	623
Co-Operative Apartments [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified		59
Co-Operative Apartments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	623	59
Construction [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified		746
Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified		746
Small Business Administration [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	479	310
Small Business Administration [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	479	310
Commercial Business And Other [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	2,841	7,314
Commercial Business And Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	3,779	8,450
Commercial Business And Other [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified		50
Commercial Business And Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	6,620	15,814
Total Loans Designated As Criticized Or Classified [Member] | Special Mention [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	23,496	42,653
Total Loans Designated As Criticized Or Classified [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	46,660	73,342
Total Loans Designated As Criticized Or Classified [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified		50
Total Loans Designated As Criticized Or Classified [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans designated as criticized or classified	$ 70,156	$ 116,045