Note 5 - Loans (Details) - Net loan charge-offs: (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	$ 4,974	$ 5,212	$ 13,223	$ 15,657
Multi-Family Residential [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	620	3,081	3,304	5,163
Commercial Real Estate Loans [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	171	55	612	2,152
One-To-Four Family - Mixed-Use Property [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	587	814	3,611	3,064
One-To-Four Family - Residential [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	(7)	198	578	1,067
Co-Operative Apartments [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)		19	70	62
Construction [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	2,374	59	2,678	2,500
Small Business Administration [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	72	23	349	265
Commercial Business And Other [Member]
Note 5 - Loans (Details) - Net loan charge-offs: [Line Items]
Net loan charge-offs (recoveries)	$ 1,157	$ 963	$ 2,021	$ 1,384