Note 3 - Loans (Detail) - Non-performing loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Loans ninety days or more past due and still accruing	$ 644	$ 6,379
Non-accrual loans	84,086	111,062
Total non-accrual loans and ninety days or more past due and still accruing	84,730	117,441
Mortgage Loans [Member] | Multi-Family Residential [Member]
Non-accrual loans	13,095	19,946
Mortgage Loans [Member] | Commercial Real Estate Loans [Member]
Non-accrual loans	15,640	19,895
Mortgage Loans [Member] | One-To-Four Family - Mixed-Use Property [Member]
Non-accrual loans	16,553	28,429
Mortgage Loans [Member] | One-To-Four Family - Residential [Member]
Non-accrual loans	13,726	12,766
Mortgage Loans [Member] | Co-Operative Apartments [Member]
Non-accrual loans	234	152
Mortgage Loans [Member] | Construction [Member]
Non-accrual loans	7,695	14,721
Mortgage Loans [Member]
Non-accrual loans	66,943	95,909
Non-Mortgage Loans [Member] | Commercial Business And Other [Member]
Non-accrual loans	16,860	14,660
Non-Mortgage Loans [Member] | Small Business Administration [Member]
Non-accrual loans	283	493
Non-Mortgage Loans [Member]
Non-accrual loans	17,143	15,153
Multi-Family Residential [Member]
Loans ninety days or more past due and still accruing		6,287
Commercial Real Estate Loans [Member]
Loans ninety days or more past due and still accruing		92
Commercial Business And Other [Member]
Loans ninety days or more past due and still accruing	$ 644