Note 5 - Loans (Details) - Non-performing loans: (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Loans ninety days or more past due and still accruing:
Loans ninety days or more past due and still accruing	$ 573	$ 644
Non-accrual loans	72,974	84,086
Total non-accrual loans and loans ninety days or more past due and still accruing	73,547	84,730
One-To-Four Family - Residential [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	12,158	13,726
One-To-Four Family - Residential [Member]
Loans ninety days or more past due and still accruing:
Loans ninety days or more past due and still accruing	15
Commercial Business And Other [Member] | Non-Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	9,999	16,860
Commercial Business And Other [Member]
Loans ninety days or more past due and still accruing:
Loans ninety days or more past due and still accruing	558	644
Multi-Family Residential [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	19,273	13,095
Commercial Real Estate Loans [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	12,676	15,640
One-To-Four Family - Mixed-Use Property [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	10,937	16,553
Co-Operative Apartments [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	160	234
Construction [Member] | Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	7,326	7,695
Small Business Administration [Member] | Non-Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	445	283
Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	62,530	66,943
Non-Mortgage Loans [Member]
Loans ninety days or more past due and still accruing:
Non-accrual loans	$ 10,444	$ 17,143