Note 2 - Securities - Amortized Cost and Fair Values of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Jun. 30, 2016
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$ 1,484
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	1,493
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis	17,504
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value	17,684
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis	26,182
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value	26,174
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	21,720
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	21,371
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis	66,890
Available-for-sale Securities, Debt Maturities, Single Maturity Date	66,722
Available-for-sale Debt Securities, Amortized Cost Basis	131,531	$ 129,748
Available-for-sale Securities, Debt Securities	131,285	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	645
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	3,648
Held-to-maturity Securities	4,296	3,494
Total held-to-maturity securities	4,293	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	64,487
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	64,143
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