Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash Flows From Operating Activities
Net Income (Loss)	$ (457,985)	$ (524,457)
Adjustments to reconcile net income (loss) to net cash from operating activities
Depreciation and amortization	1,663,525	1,701,213
Deferred income taxes and investment tax credits	1,112,913	660,622
Change in cash surrender value of officer's life insurance	(12,690)	22,275
Share-based compensation	264,004	245,987
Excess tax benefit (deficiency) from share-based compensation, Operating Activities	(42,603)	5,508
Increase in assets	(5,704,235)	(4,289,597)
Increase (Decrease) in liabilities	601,609	(737,332)
Net cash provided by operating activities	(2,490,256)	(2,926,797)
Cash Flows From Investing Activities
Capital expenditures	(2,289,241)	(2,125,746)
Proceeds from sale of property, plant and equipment	40,965	133,571
Net cash used in investing activities	(2,248,276)	(1,992,175)
Cash Flows From Financing Activities
Dividends on common shares	(1,476,423)	(1,453,344)
Issuance of common shares	141,096	147,731
Payment of tax withholdings on share-based compensation	(266,005)	(240,900)
Net cash used in financing activities	(1,601,332)	(1,546,513)
Net Decrease in Cash and Cash Equivalents	(6,339,864)	(6,465,485)
Cash and Cash Equivalents, Beginning of Period	18,606,567	16,924,278
Cash and Cash Equivalents, End of Period	$ 12,266,703	$ 10,458,793