Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash Flows From Operating Activities
Net loss	$ (158,903)	$ (797,126)
Adjustments to reconcile net loss to net cash from operating activities
Depreciation and amortization	1,593,078	1,577,831
Deferred income taxes and investment tax credits	626,304	836,287
Change in cash surrender value of officer's life insurance	(8,918)	26,924
Share-based compensation	367,645	415,017
Excess tax deficiency from share-based compensation	(8,945)	0
Decrease in assets	(3,201,233)	(10,783,104)
Increase (decrease) in liabilities	(1,913,990)	2,025,760
Net cash used in operating activities	(2,704,962)	(6,698,411)
Cash Flows From Investing Activities
Capital expenditures	(1,735,876)	(2,122,327)
Proceeds from sale of property, plant and equipment	715	50,936
Net cash used in investing activities	(1,735,161)	(2,071,391)
Cash Flows From Financing Activities
Dividends on common shares	(1,235,873)	(1,187,651)
Issuance of common shares	147,159	111,551
Excess tax benefit from share-based compensation	35,111	21,562
Repayment of long-term debt	0	(86,000)
Borrowings on bank line of credit	0	3,839,409
Repayment of bank line of credit	0	(1,132,857)
Net cash (used in) provided by financing activities	(1,053,603)	1,566,014
Decrease in Cash and Cash Equivalents	(5,493,726)	(7,203,788)
Cash and Cash Equivalents, Beginning of Year	9,740,502	7,340,192
Cash and Cash Equivalents, End of Year	$ 4,246,776	$ 136,404