Note 5 - Loans (Detail) - Non-performing loans: (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Loans ninety days or more past due and still accruing	$ 1,778	$ 644
Non-accrual loans	77,104	84,086
Total non-accrual loans and loans ninety days or more past due and still accruing	78,882	84,730
Multi-Family Residential [Member] | Mortgage Loans [Member]
Non-accrual loans	18,569	13,095
Multi-Family Residential [Member]
Loans ninety days or more past due and still accruing	1,073
Co-Operative Apartments [Member] | Mortgage Loans [Member]
Non-accrual loans	160	234
Co-Operative Apartments [Member]
Loans ninety days or more past due and still accruing	103
Commercial Business And Other [Member] | Non-Mortgage Loans [Member]
Non-accrual loans	12,640	16,860
Commercial Business And Other [Member]
Loans ninety days or more past due and still accruing	602	644
Commercial Real Estate Loans [Member] | Mortgage Loans [Member]
Non-accrual loans	13,811	15,640
One-To-Four Family - Mixed-Use Property [Member] | Mortgage Loans [Member]
Non-accrual loans	10,523	16,553
One-To-Four Family - Residential [Member] | Mortgage Loans [Member]
Non-accrual loans	13,547	13,726
Construction [Member] | Mortgage Loans [Member]
Non-accrual loans	7,396	7,695
Small Business Administration [Member] | Non-Mortgage Loans [Member]
Non-accrual loans	458	283
Mortgage Loans [Member]
Non-accrual loans	64,006	66,943
Non-Mortgage Loans [Member]
Non-accrual loans	$ 13,098	$ 17,143