Note 5 - Troubled Debt Restructurings That are Performing According to Their Restructured Terms (Details) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2015	Jun. 30, 2016 USD ($)	Jun. 30, 2015	Dec. 31, 2015 USD ($)
Multi-Family Residential [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		9		9
Recorded investment		$ 2,599		$ 2,626
Commercial Real Estate Loans [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		2		3
Recorded investment		$ 2,086		$ 2,371
One-To-Four Family - Mixed Used Property [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		5		6
Recorded investment		$ 1,819		$ 2,052
One-To-Four Family - Residential [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		3		1
Recorded investment		$ 600		$ 343
Small Business Administration Portfolio Segment [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts				1
Recorded investment				$ 34
Commercial Business and Other [Member] | Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		3		4
Recorded investment		$ 1,197		$ 2,083
Performing Financial Instruments [Member]
Financing Receivable, Modifications, Number of Contracts		22		24
Recorded investment		$ 8,301		$ 9,509
Financing Receivable, Modifications, Number of Contracts	0	4	1