Note 6 - Loans Held for Sale (Details) - Delinquent and Non-Performing Loans Sold During the Period $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Note 6 - Loans Held for Sale (Details) - Delinquent and Non-Performing Loans Sold During the Period [Line Items]
Loans sold	6	18	16
Proceeds	$ 2,280	$ 7,307	$ 7,332
Net charge-offs	(3)	134	263
Net gain (loss)	$ 14	$ 63	$ 0
Multi-Family Residential Portfolio Segment[Member]
Note 6 - Loans Held for Sale (Details) - Delinquent and Non-Performing Loans Sold During the Period [Line Items]
Loans sold	4	8	7
Proceeds	$ 1,539	$ 3,420	$ 3,216
Net charge-offs	(3)	134	(70)
Net gain (loss)	$ 1	$ (1)	$ 0
Commercial Real Estate Portfolio Segment [Member]
Note 6 - Loans Held for Sale (Details) - Delinquent and Non-Performing Loans Sold During the Period [Line Items]
Loans sold	2	3	3
Proceeds	$ 741	$ 2,051	$ 2,047
Net charge-offs	0	0	295
Net gain (loss)	$ 13	$ 13	$ 0
One-To-Four Family - Mixed-Use Property Portfolio Segment[Member]
Note 6 - Loans Held for Sale (Details) - Delinquent and Non-Performing Loans Sold During the Period [Line Items]
Loans sold		7	6
Proceeds		$ 1,836	$ 2,069
Net charge-offs		0	38
Net gain (loss)		$ 51	$ 0