Note 5 - Loans (Detail) - Net loan charge-offs (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net loan charge-offs	$ 4,719	$ 3,072	$ 10,445	$ 8,341
Multi-Family Residential [Member]
Net loan charge-offs	1,078	879	2,082	1,796
Commercial Real Estate Loans [Member]
Net loan charge-offs	387	572	2,097	2,522
One-To-Four Family - Mixed-Use Property [Member]
Net loan charge-offs	838	307	2,250	480
One-To-Four Family - Residential [Member]
Net loan charge-offs	44	454	869	1,928
Co-Operative Apartments [Member]
Net loan charge-offs	1		43
Construction [Member]
Net loan charge-offs	2,207	703	2,441	703
Small Business Administration [Member]
Net loan charge-offs	138	148	242	471
Commercial Business And Other [Member]
Net loan charge-offs	$ 26	$ 9	$ 421	$ 441