Note 5 - Loans (Details) - Impaired loans: (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
With no related allowance recorded:
Recorded Investment	$ 89,706	$ 108,883
Unpaid Principal Balance	106,892	128,600
Average Recorded Investment	92,308	134,768
Interest Income Recognized	403	1,889
With an allowance recorded:
Recorded Investment	22,887	19,727
Unpaid Principal Balance	22,953	19,808
Related Allowance	1,726	1,494
Average Recorded Investment	21,775	20,926
Interest Income Recognized	539	1,004
Total Impaired Loans:
Recorded Investment	138,682	171,001
Related Allowance	1,726	1,494
Multi-Family Residential [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	22,976	19,753
Unpaid Principal Balance	26,127	22,889
Average Recorded Investment	23,307	27,720
Interest Income Recognized	43	429
With an allowance recorded:
Recorded Investment	3,036	1,922
Unpaid Principal Balance	3,037	1,937
Related Allowance	272	183
Average Recorded Investment	2,747	3,174
Interest Income Recognized	84	124
Total Impaired Loans:
Related Allowance	272	183
Multi-Family Residential [Member]
Total Impaired Loans:
Recorded Investment	34,123	35,672
Commercial Real Estate Loans [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	26,950	34,672
Unpaid Principal Balance	27,728	38,594
Average Recorded Investment	22,913	43,976
Interest Income Recognized	203	536
With an allowance recorded:
Recorded Investment	7,945	7,773
Unpaid Principal Balance	8,011	7,839
Related Allowance	290	359
Average Recorded Investment	7,308	6,530
Interest Income Recognized	174	400
Total Impaired Loans:
Related Allowance	290	359
Commercial Real Estate Loans [Member]
Total Impaired Loans:
Recorded Investment	32,216	38,974
One-To-Four Family - Mixed-Use Property [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	14,529	23,054
Unpaid Principal Balance	17,301	25,825
Average Recorded Investment	14,852	27,018
Interest Income Recognized	82	485
With an allowance recorded:
Recorded Investment	4,617	3,314
Unpaid Principal Balance	4,616	3,313
Related Allowance	693	571
Average Recorded Investment	4,102	4,385
Interest Income Recognized	115	205
Total Impaired Loans:
Related Allowance	693	571
One-To-Four Family - Mixed-Use Property [Member]
Total Impaired Loans:
Recorded Investment	27,918	37,739
One-To-Four Family - Residential [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	14,161	15,328
Unpaid Principal Balance	18,272	18,995
Average Recorded Investment	14,669	15,047
Interest Income Recognized	49	186
With an allowance recorded:
Recorded Investment	369	374
Unpaid Principal Balance	369	374
Related Allowance	60	94
Average Recorded Investment	371	188
Interest Income Recognized	7	19
Total Impaired Loans:
Related Allowance	60	94
One-To-Four Family - Residential [Member]
Total Impaired Loans:
Recorded Investment	16,294	20,551
Co-Operative Apartments [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	266	237
Unpaid Principal Balance	384	299
Average Recorded Investment	267	174
Interest Income Recognized	4	2
With an allowance recorded:
Average Recorded Investment		101
Co-Operative Apartments [Member]
Total Impaired Loans:
Recorded Investment	266	340
Construction [Member] | Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	7,794	10,598
Unpaid Principal Balance	12,518	15,182
Average Recorded Investment	7,815	14,689
Interest Income Recognized		173
With an allowance recorded:
Recorded Investment	1,916	3,805
Unpaid Principal Balance	1,916	3,805
Related Allowance	34	38
Average Recorded Investment	2,527	4,275
Interest Income Recognized	32	140
Total Impaired Loans:
Related Allowance	34	38
Construction [Member]
Total Impaired Loans:
Recorded Investment	9,710	14,403
Small Business Administration [Member] | Non-Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	483	850
Unpaid Principal Balance	554	1,075
Average Recorded Investment	494	1,042
Interest Income Recognized	1	25
Small Business Administration [Member]
Total Impaired Loans:
Recorded Investment	431	779
Commercial Business And Other [Member] | Non-Mortgage Loans [Member]
With no related allowance recorded:
Recorded Investment	2,547	4,391
Unpaid Principal Balance	4,008	5,741
Average Recorded Investment	7,991	5,102
Interest Income Recognized	21	53
With an allowance recorded:
Recorded Investment	5,004	2,539
Unpaid Principal Balance	5,004	2,540
Related Allowance	377	249
Average Recorded Investment	4,720	2,273
Interest Income Recognized	127	116
Total Impaired Loans:
Related Allowance	377	249
Commercial Business And Other [Member]
Total Impaired Loans:
Recorded Investment	17,724	22,543
Mortgage Loans [Member]
With an allowance recorded:
Related Allowance	1,349	1,245
Total Impaired Loans:
Recorded Investment	104,559	120,830
Unpaid Principal Balance	120,279	139,052
Related Allowance	1,349	1,245
Average Recorded Investment	100,878	147,277
Interest Income Recognized	793	2,699
Non-Mortgage Loans [Member]
With an allowance recorded:
Related Allowance	377	249
Total Impaired Loans:
Recorded Investment	8,034	7,780
Unpaid Principal Balance	9,566	9,356
Related Allowance	377	249
Average Recorded Investment	13,205	8,417
Interest Income Recognized	$ 149	$ 194