Long-Term Debt (Details) - USD ($)	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Debt Instrument [Line Items]
Unamortized Debt Issuance Expense	$ 77,000	$ 84,000
Regulatory assets, current	2,689,000	2,916,000
Max limit on dividends paid [Line Items]
Annual principal payment	1,500,000
Maximum maturities of long-term debt [Abstract]
2017	1,500,000
2018	1,500,000
2019	1,500,000
2020	1,500,000
Thereafter	46,000,000
Long Term Debt 3 Fair Value Disclosure	55,324,000	$ 52,935,000
Debt Covenants, Actual [Abstract]
Default debt maximum	2,500,000
Other Debt Covenants [Abstract]
Total of long-term debt maturity	$ 52,000,000