Note 5 - Loans (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
With no related allowance recorded:
Recorded Investment	$ 50,945	$ 65,488
Unpaid Principal Balance	58,890	76,911
Average Recorded Investment	59,710	80,141
Interest Income Recognized	804	1,380
With an allowance recorded:
Recorded Investment	11,400	16,280
Unpaid Principal Balance	11,400	16,376
Related Allowance	1,129	1,648
Average Recorded Investment	13,722	19,972
Interest Income Recognized	489	864
Total Impaired Loans:
Recorded Investment	79,224	116,045
Related Allowance	1,129	1,648
Multi-Family Residential [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	10,851	18,709
Unpaid Principal Balance	12,307	20,931
Average Recorded Investment	15,397	22,091
Interest Income Recognized	150	402
With an allowance recorded:
Recorded Investment	2,792	3,048
Unpaid Principal Balance	2,792	3,049
Related Allowance	292	312
Average Recorded Investment	2,988	2,892
Interest Income Recognized	112	170
Total Impaired Loans:
Related Allowance	292	312
Multi-Family Residential [Member]
Total Impaired Loans:
Recorded Investment	18,591	29,029
Commercial Real Estate Loans [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	10,145	16,721
Unpaid Principal Balance	10,447	17,405
Average Recorded Investment	12,739	19,846
Interest Income Recognized	231	266
With an allowance recorded:
Recorded Investment	2,380	3,036
Unpaid Principal Balance	2,380	3,102
Related Allowance	23	164
Average Recorded Investment	3,532	6,388
Interest Income Recognized	125	194
Total Impaired Loans:
Related Allowance	23	164
Commercial Real Estate Loans [Member]
Total Impaired Loans:
Recorded Investment	19,433	30,323
One-To-Four Family - Mixed-Use Property [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	13,406	12,748
Unpaid Principal Balance	15,118	15,256
Average Recorded Investment	13,126	13,916
Interest Income Recognized	208	319
With an allowance recorded:
Recorded Investment	3,110	4,191
Unpaid Principal Balance	3,110	4,221
Related Allowance	591	875
Average Recorded Investment	3,300	4,041
Interest Income Recognized	128	228
Total Impaired Loans:
Related Allowance	591	875
One-To-Four Family - Mixed-Use Property [Member]
Total Impaired Loans:
Recorded Investment	20,209	22,890
One-To-Four Family - Residential [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	12,517	14,026
Unpaid Principal Balance	15,403	17,527
Average Recorded Investment	13,081	14,529
Interest Income Recognized	75	125
With an allowance recorded:
Recorded Investment	357	364
Unpaid Principal Balance	357	364
Related Allowance	55	58
Average Recorded Investment	359	368
Interest Income Recognized	11	15
Total Impaired Loans:
Related Allowance	55	58
One-To-Four Family - Residential [Member]
Total Impaired Loans:
Recorded Investment	15,499	16,874
Co-Operative Apartments [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment		59
Unpaid Principal Balance		147
Average Recorded Investment		189
Co-Operative Apartments [Member]
Total Impaired Loans:
Recorded Investment		59
Construction [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Unpaid Principal Balance		118
Average Recorded Investment	380	4,014
With an allowance recorded:
Recorded Investment		746
Unpaid Principal Balance		746
Related Allowance		17
Average Recorded Investment	249	1,929
Interest Income Recognized		18
Total Impaired Loans:
Related Allowance		17
Construction [Member]
Total Impaired Loans:
Recorded Investment		746
Small Business Administration [Member] | Non-Mortgage Loans [Member]
With no related allowance recorded:
Average Recorded Investment		247
Small Business Administration [Member]
Total Impaired Loans:
Recorded Investment	294	310
Commercial Business And Other [Member] | Non-Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	4,026	3,225
Unpaid Principal Balance	5,615	5,527
Average Recorded Investment	4,987	5,309
Interest Income Recognized	140	268
With an allowance recorded:
Recorded Investment	2,761	4,895
Unpaid Principal Balance	2,761	4,894
Related Allowance	168	222
Average Recorded Investment	3,294	4,354
Interest Income Recognized	113	239
Total Impaired Loans:
Related Allowance	168	222
Commercial Business And Other [Member]
Total Impaired Loans:
Recorded Investment	5,198	15,814
Mortgage Loans [Member]
With an allowance recorded:
Related Allowance	961	1,426
Total Impaired Loans:
Recorded Investment	55,558	73,648
Unpaid Principal Balance	61,914	82,866
Related Allowance	961	1,426
Average Recorded Investment	65,151	90,203
Interest Income Recognized	1,040	1,737
Non-Mortgage Loans [Member]
With an allowance recorded:
Related Allowance	168	222
Total Impaired Loans:
Recorded Investment	6,787	8,120
Unpaid Principal Balance	8,376	10,421
Related Allowance	168	222
Average Recorded Investment	8,281	9,910
Interest Income Recognized	$ 253	$ 507