Note 19 - Summarized Quarterly Financial Data (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Total interest income	$ 8,044,000	$ 6,837,000	$ 6,570,000	$ 6,250,000					$ 27,701,000	$ 23,005,000	$ 19,741,000
Net interest income after provision for credit losses	5,981,000	5,022,000	4,556,000	4,457,000	$ 4,684,000	$ 4,674,000	$ 4,403,000	$ 4,124,000	20,016,000	17,885,000	16,504,000
Non-interest income	2,785,000	497,000	708,000	896,000	530,000	967,000	4,665,000	2,547,000	4,886,000	8,709,000	5,564,000
Net Earnings	$ 3,755,000	$ 1,611,000	$ 1,558,000	$ 1,724,000	$ 1,360,000	$ 1,678,000	$ 3,557,000	$ 2,459,000	$ 8,648,000	$ 9,055,000	$ 7,051,000
Basic earnings per common share (in dollars per share)	$ 0.37	$ 0.15	$ 0.15	$ 0.16	$ 0.13	$ 0.16	$ 0.34	$ 0.24	$ 0.83	$ 0.87	$ 0.67
Diluted earnings per common share (in dollars per share)	0.37	0.15	0.15	0.16	0.13	0.16	0.34	0.24	0.83	0.87	0.67
Dividends declared per common share outstanding (in dollars per share)			$ 0.44				$ 0.42		$ 0.44	$ 0.42	$ 0.40
Finance and loan income					$ 6,247,000	$ 5,787,000	$ 5,714,000	$ 5,257,000	$ 25,471,000	$ 21,489,000	$ 18,370,000