Consolidated Statements of Changes in Shareholders' Equity - USD ($)	Total	Common Shares [Member]	Premium on Common Shares [Member]	Retained Earnings [Member]
Balance at Jun. 30, 2013	$ 70,005,415	$ 6,864,253	$ 45,523,123	$ 17,618,039
Net income (Loss)	8,275,128	0	0	8,275,128
Issuance of common shares	595,249	28,809	566,440	0
Issuance of common shares under the incentive compensation plan	349,626	49,696	299,930	0
Share-based compensation expense	762,340	0	762,340	0
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	30,505	0	30,505	0
Dividends on common shares	(5,289,911)	0	0	(5,289,911)
Balance at Jun. 30, 2014	74,728,352	6,942,758	47,182,338	20,603,256
Net income (Loss)	6,496,081	0	0	6,496,081
Issuance of common shares	532,712	26,412	506,300	0
Issuance of common shares under the incentive compensation plan	442,581	57,330	385,251	0
Share-based compensation expense	652,470	0	652,470	0
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	9,249	0	9,249	0
Dividends on common shares	(5,639,791)	0	0	(5,639,791)
Balance at Jun. 30, 2015	77,221,654	7,026,500	48,735,608	21,459,546
Net income (Loss)	5,529,378	0	0	5,529,378
Issuance of common shares	614,518	28,437	586,081	0
Issuance of common shares under the incentive compensation plan	(263,044)	32,825	(295,869)	0
Share-based compensation expense	452,230	0	452,230	0
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	(5,508)	0	(5,508)	0
Dividends on common shares	(5,822,259)	0	0	(5,822,259)
Balance at Jun. 30, 2016	$ 77,726,969	$ 7,087,762	$ 49,472,542	$ 21,166,665