Schedule II (Details) - USD ($) |
12 Months Ended | |||||
|---|---|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2016 |
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| SEC Schedule, 12-09, Allowance, Credit Loss [Member] | ||||||
| Movement in Valuation Allowances and Reserves [Roll Forward] | ||||||
| Balance at beginning of period | $ 96,868 | $ 96,868 | $ 126,868 | |||
| Additions charged (credited) to cost and expenses | 103,132 | (30,000) | [1] | |||
| (Deductions) | ||||||
| Balance at end of period | 200,000 | 96,868 | 96,868 | |||
| Deferred Tax Valuation Allowance [Member] | ||||||
| Movement in Valuation Allowances and Reserves [Roll Forward] | ||||||
| Balance at beginning of period | 628,730 | 628,730 | 628,730 | |||
| Additions charged (credited) to cost and expenses | 3,467,623 | |||||
| (Deductions) | ||||||
| Balance at end of period | $ 4,096,353 | $ 628,730 | $ 628,730 | |||
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