Stockholders' Equity - Reconciliation of Transactions Under ATM Agreement (Details) - USD ($) |
1 Months Ended | 6 Months Ended | 12 Months Ended | ||
---|---|---|---|---|---|
Jun. 29, 2017 |
Aug. 31, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
Dec. 31, 2017 |
|
Class of Stock [Line Items] | |||||
Number of shares sold (in shares) | 298,525 | ||||
Net proceeds | $ 1,795,860 | $ 2,920,253 | |||
ATM Agreement | |||||
Class of Stock [Line Items] | |||||
Number of shares sold (in shares) | 6,429,299 | 3,292,161.4 | |||
Gross proceeds | $ 1,795,860 | $ 2,670,253 | |||
Fees | 52,842 | 74,821 | |||
Net proceeds | $ 250,000 | $ 1,743,018 | $ 2,595,432 | ||
Average price per share (in dollars per share) | $ 0.28 | $ 0.81 |