Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - Fair Value, Measurements, Recurring - USD ($) |
Jun. 30, 2017 |
Jun. 30, 2016 |
---|---|---|
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Cash and cash equivalents | $ 1,911,170 | $ 5,874,258 |
Level 1 | ||
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] | ||
Cash and cash equivalents | $ 1,911,170 |