Note 12 - Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Financial Assets:
Investments, Fair Value	$ 4,294	$ 3,972
Securities available-for-sale	95,509	95,844
Reported Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	96,055	105,094
Investments, Fair Value	4,281	3,957
Securities available-for-sale	95,509	95,844
Financial Liabilities:
Short-term borrowings	40,000	40,000
Reported Value Measurement [Member] | Demand Deposits [Member]
Financial Liabilities:
Demand and savings deposits	90,867	81,989
Reported Value Measurement [Member] | Certificates of Deposit [Member]
Financial Liabilities:
Demand and savings deposits	377,767	551,158
Reported Value Measurement [Member] | Commercial Portfolio Segment [Member]
Financial Assets:
Loans	295,280	389,511
Reported Value Measurement [Member] | Other Loans Portfolio Segment [Member]
Financial Assets:
Loans	10,729	14,225
Estimate of Fair Value Measurement [Member]
Financial Assets:
Cash and cash equivalents	96,055	105,094
Investments, Fair Value	4,294	3,972
Securities available-for-sale	95,509	95,844
Financial Liabilities:
Short-term borrowings	40,000	40,001
Estimate of Fair Value Measurement [Member] | Demand Deposits [Member]
Financial Liabilities:
Demand and savings deposits	90,867	81,989
Estimate of Fair Value Measurement [Member] | Certificates of Deposit [Member]
Financial Liabilities:
Demand and savings deposits	379,963	551,508
Estimate of Fair Value Measurement [Member] | Commercial Portfolio Segment [Member]
Financial Assets:
Loans	295,556	388,781
Estimate of Fair Value Measurement [Member] | Other Loans Portfolio Segment [Member]
Financial Assets:
Loans	$ 10,726	$ 14,512