Note 5 - Loans (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Mortgage loans:
Recorded Investment, With no related allowance recorded	$ 48,996	$ 45,203
Unpaid Principal Balance, With no related allowance recorded	54,717	51,011
Average Recorded Investment, With no related allowance recorded	47,101	55,077
Interest Income Recognized, With no related allowance recorded	247	806
Mortgage loans:
Recorded Investment, With an allowance recorded	9,031	11,312
Unpaid Principal Balance, With an allowance recorded	9,031	11,312
Related Allowance, With an allowance recorded	1,045	1,094
Average Recorded Investment, With an allowance recorded	10,174	13,121
Interest Income Recognized, With an allowance recorded	121	615
Total Impaired Loans:
Related Allowance, Total Impaired Loans	1,045	1,094
Multi-Family Residential [Member] \| Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	11,329	10,481
Unpaid Principal Balance, With no related allowance recorded	12,423	11,551
Average Recorded Investment, With no related allowance recorded	10,905	14,168
Interest Income Recognized, With no related allowance recorded	56	194
Mortgage loans:
Recorded Investment, With an allowance recorded	2,414	2,779
Unpaid Principal Balance, With an allowance recorded	2,414	2,779
Related Allowance, With an allowance recorded	267	286
Average Recorded Investment, With an allowance recorded	2,597	2,936
Interest Income Recognized, With an allowance recorded	32	149
Total Impaired Loans:
Related Allowance, Total Impaired Loans	267	286
Multi-Family Residential [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	14,568	16,720
Commercial Real Estate Loans [Member] \| Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	6,033	7,100
Unpaid Principal Balance, With no related allowance recorded	6,173	7,221
Average Recorded Investment, With no related allowance recorded	6,567	11,329
Interest Income Recognized, With no related allowance recorded	39	51
Mortgage loans:
Recorded Investment, With an allowance recorded	542	2,373
Unpaid Principal Balance, With an allowance recorded	542	2,373
Related Allowance, With an allowance recorded	19	21
Average Recorded Investment, With an allowance recorded	1,458	3,242
Interest Income Recognized, With an allowance recorded	7	167
Total Impaired Loans:
Related Allowance, Total Impaired Loans	19	21
Commercial Real Estate Loans [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	7,637	12,553
One-To-Four Family - Mixed-Use Property [Member] \| Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	11,471	12,027
Unpaid Principal Balance, With no related allowance recorded	12,668	13,381
Average Recorded Investment, With no related allowance recorded	11,749	12,852
Interest Income Recognized, With no related allowance recorded	57	321
Mortgage loans:
Recorded Investment, With an allowance recorded	3,077	3,093
Unpaid Principal Balance, With an allowance recorded	3,077	3,093
Related Allowance, With an allowance recorded	566	579
Average Recorded Investment, With an allowance recorded	3,085	3,249
Interest Income Recognized, With an allowance recorded	42	170
Total Impaired Loans:
Related Allowance, Total Impaired Loans	566	579
One-To-Four Family - Mixed-Use Property [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	16,634	17,753
One-To-Four Family - Residential [Member] \| Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	13,603	12,816
Unpaid Principal Balance, With no related allowance recorded	16,523	15,709
Average Recorded Investment, With no related allowance recorded	13,210	13,015
Interest Income Recognized, With no related allowance recorded	25	103
Mortgage loans:
Recorded Investment, With an allowance recorded	351	354
Unpaid Principal Balance, With an allowance recorded	351	354
Related Allowance, With an allowance recorded	54	54
Average Recorded Investment, With an allowance recorded	353	358
Interest Income Recognized, With an allowance recorded	4	14
Total Impaired Loans:
Related Allowance, Total Impaired Loans	54	54
One-To-Four Family - Residential [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	14,544	15,408
Co-Operative Apartments [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	618	623
Construction [Member] \| Mortgage Loans [Member]
Mortgage loans:
Average Recorded Investment, With no related allowance recorded		285
Mortgage loans:
Average Recorded Investment, With an allowance recorded		187
Small Business Administration [Member] \| Non-Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	318
Unpaid Principal Balance, With no related allowance recorded	318
Average Recorded Investment, With no related allowance recorded	159
Interest Income Recognized, With no related allowance recorded	1
Mortgage loans:
Recorded Investment, With an allowance recorded	41
Unpaid Principal Balance, With an allowance recorded	41
Average Recorded Investment, With an allowance recorded	21
Interest Income Recognized, With an allowance recorded	1
Small Business Administration [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	516	479
Commercial Business And Other [Member] \| Non-Mortgage Loans [Member]
Mortgage loans:
Recorded Investment, With no related allowance recorded	6,242	2,779
Unpaid Principal Balance, With no related allowance recorded	6,612	3,149
Average Recorded Investment, With no related allowance recorded	4,511	3,428
Interest Income Recognized, With no related allowance recorded	69	137
Mortgage loans:
Recorded Investment, With an allowance recorded	2,606	2,713
Unpaid Principal Balance, With an allowance recorded	2,606	2,713
Related Allowance, With an allowance recorded	139	154
Average Recorded Investment, With an allowance recorded	2,660	3,149
Interest Income Recognized, With an allowance recorded	35	115
Total Impaired Loans:
Related Allowance, Total Impaired Loans	139	154
Commercial Business And Other [Member]
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	8,457	6,620
Mortgage Loans [Member]
Mortgage loans:
Related Allowance, With an allowance recorded	906	940
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	48,820	51,023
Unpaid Principal Balance, Total Impaired Loans	54,171	56,461
Related Allowance, Total Impaired Loans	906	940
Average Recorded Investment, Total Impaired Loans	49,924	61,621
Interest Income Recognized, Total Impaired Loans	262	1,169
Non-Mortgage Loans [Member]
Mortgage loans:
Related Allowance, With an allowance recorded	139	154
Total Impaired Loans:
Recorded Investment, Total Impaired Loans	9,207	5,492
Unpaid Principal Balance, Total Impaired Loans	9,577	5,862
Related Allowance, Total Impaired Loans	139	154
Average Recorded Investment, Total Impaired Loans	7,351	6,577
Interest Income Recognized, Total Impaired Loans	$ 106	$ 252

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

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