Note 11 - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale	$ 48,774	$ 47,770
Securities available-for-sale	48,774	47,770
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale
Securities available-for-sale
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
US Treasury Securities [Member] | Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale	48,774	47,770
Securities available-for-sale	48,774	47,770
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale
Securities available-for-sale
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale	13,385	13,152
Securities available-for-sale	13,385	13,152
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale	13,385	13,152
Securities available-for-sale	13,385	13,152
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale
Securities available-for-sale
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale	32,223	18,669
Securities available-for-sale	32,223	18,669
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] | Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale	32,223	18,669
Securities available-for-sale	32,223	18,669
Mutual Fund Investments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale	1,462	1,209
Securities available-for-sale	1,462	1,209
Mutual Fund Investments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale
Securities available-for-sale
Mutual Fund Investments [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
Mutual Fund Investments [Member] | Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale	1,462	1,209
Securities available-for-sale	1,462	1,209
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale
Securities available-for-sale
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale		412
Securities available-for-sale		412
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale		412
Securities available-for-sale		412
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Total securities available-for-sale	50,236	48,979
Securities available-for-sale	50,236	48,979
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Total securities available-for-sale	45,608	32,233
Securities available-for-sale	45,608	32,233
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Total securities available-for-sale
Securities available-for-sale
Fair Value, Measurements, Recurring [Member]
Total securities available-for-sale	95,844	81,212
Securities available-for-sale	95,844	81,212
Total securities available-for-sale	95,844	81,212
Securities available-for-sale	$ 95,844	$ 81,212