Note 4 - Loans held for sale (Detail) - Delinquent and non-performing loans sold during the period: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Loans sold	77	44	20
Proceeds	$ 44,223	$ 27,817	$ 9,254
Net charge-offs	(5,666)	(3,651)	(661)
Net gain (loss)	(38)	167	17
Multi-Family Residential [Member]
Loans sold	34	26	7
Proceeds	21,429	15,243	3,031
Net charge-offs	(2,974)	(2,767)	(154)
Net gain (loss)	(46)	166	15
Commercial Real Estate Loans [Member]
Loans sold	11	4	2
Proceeds	5,869	5,225	2,231
Net charge-offs	(572)	(367)	(408)
One-To-Four Family - Mixed-Use Property [Member]
Loans sold	25	10	9
Proceeds	8,270	3,067	2,927
Net charge-offs	(1,927)	(514)	(74)
Net gain (loss)			2
Construction [Member]
Loans sold	3	2	1
Proceeds	2,540	4,039	860
Net charge-offs	(57)	(3)
Commercial Business And Other [Member]
Loans sold	4	2
Proceeds	6,115	243
Net charge-offs	(136)
Net gain (loss)	8	1
One-To-Four Family - Residential [Member]
Loans sold			1
Proceeds			205
Net charge-offs			$ (25)