Note 2 - Securities - Amortized Cost and Fair Values of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
U.S. Government-sponsored Mortgage-backed and Related Securities [Member]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	$ 60,852
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	61,703
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	154
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	420
Available-for-sale Debt Securities, Amortized Cost Basis	154	$ 153
Available-for-sale Securities, Debt Securities	420	429
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	3,697
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	3,724
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	14,804
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	15,287
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	27,972
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	28,917
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	17,736
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	18,259
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	64,209
Available-for-sale Securities, Debt Maturities, Single Maturity Date	66,187
Available-for-sale Debt Securities, Amortized Cost Basis	125,215	129,748
Available-for-sale Securities, Debt Securities	128,310	133,369
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	674
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	702
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	3,725
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	3,808
Held-to-maturity Securities	4,399	3,494
Total held-to-maturity securities	$ 4,510	$ 3,619