Note 2 - Securities - Amortized Cost and Fair Values of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 3,054
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	3,060
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	17,699
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	17,944
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	26,244
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	26,301
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	21,110
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	20,855
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	68,107
Available-for-sale Securities, Debt Maturities, Single Maturity Date	68,160
Available-for-sale Debt Securities, Amortized Cost Basis	130,798	$ 129,748
Available-for-sale Securities, Debt Securities	130,871	133,369
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	638
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	652
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	3,658
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	3,683
Held-to-maturity Securities	4,296	3,494
Total held-to-maturity securities	4,335	3,619
U.S. Government-sponsored Mortgage-backed and Related Securities [Member]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	62,536
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	62,263
Pooled Trust Preferred Securities Subject to Mandatory Redemption [Member]
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	155
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	448
Available-for-sale Debt Securities, Amortized Cost Basis	155	153
Available-for-sale Securities, Debt Securities	$ 448	$ 429